EFFECTS OF ALTERATION OF EXPRESSION OF THE MtfA GENE AND ITS HOMOLOGS ON THE PRODUCTION OF FUNGAL SECONDARY METABOLITES

Abstract

Many fungal secondary metabolites are of industrial interest, such as antibiotics, while others are undesirable compounds such as mycotoxins. Overexpression of mtfA enhances production of fungal compounds with applications in the medical field, and overexpression or impaired mtfA expression decreases the production of compounds that negatively affect health/agriculture/economy such as mycotoxins.

Description

BACKGROUND

Many fungal secondary metabolites are of industrial interest, such as antibiotics, while others are undesirable compounds such as mycotoxins. Overexpression of mtfA enhances production of fungal compounds with applications in the medical field, and overexpression or impaired mtfA expression decreases the production of compounds that negatively affect health/agriculture/economy such as mycotoxins.

Numerous fungal secondary metabolites, also denominated natural products, have beneficial biological activities that can be use in the medical field, including antibiotics and antitumoral drugs among others.

Other fungal natural products, such as mycotoxin, are detrimental for human and animal health and negatively impact agriculture causing economic losses.

Species of the genus Aspergillus produce numerous secondary metabolites (Adrio and Demain, 2003; Reverberi et al., 2010; Brakhage and Schroeckh, 2011), including compounds with beneficial effects, such as antibiotics and other molecules with application in the medical field. Other secondary metabolites produce by these organisms are detrimental, such as mycotoxins (Bennett and Klich, 2003). Aspergillus nidulans, a model filamentous fungus studied for more than fifty years, produces the mycotoxin sterigmatocystin (ST). ST and the carcinogenic compounds called aflatoxins (AF), produced by related species such as A. flavus, A. parasiticus, and A. nomiusi (Cole and Cox, 1981), are both synthesized through a conserved metabolic pathway (Payne and Yu, 2010; Sweeney and Dobson, 1999; Payne and Brown, 1998) where ST is the penultimate precursor. The genes responsible for ST/AF biosynthesis are clustered. Within the clusters, the regulatory gene aflR encodes a transcription factor that acts as a specific cluster activator (Keller and Hohn, 1997; Yu et al., 1996; Fernandes et al., 1998).

Aspergillus nidulans also produces the beta-lactam antibiotic penicillin and the antitumoral compound terraquinone.

In fungi secondary metabolism regulation and is often found to be govern by genetic mechanisms also controlling asexual and sexual development (Calvo et al., 2002). One of this main common regulatory links is the global regulatory gene veA, first described to be a developmental regulator in A. nidulans (Kim et al., 2002). In 2003 we describe for the first time the connection between veA and the synthesis of numerous secondary metabolites, including ST (Kato et al., 2003). Absence of the veA gene in A. nidulans prevents aflR expression and ST biosynthesis. VeA also regulates the production of other metabolites, including penicillin (Kato et al., 2003). In other fungi, veA homologs also regulate the synthesis of penicillin in Penicillium chrysogenum (Hoff et al., 2010) as well as cephalosporin C in Acremonium chrysogenum (Dreyer et al., 2007). Furthermore, veA also regulates the biosynthesis of other mycotoxins, for example AF, cyclopiazonic acid and aflatrem in Aspergillus flavus (Duran et al., 2007; Calvo et al., 2004; Duran et al., 2009), trichothecenes in F. graminerum (Merhej et al., 2011), and fumonisins and fusarins in Fusarium spp, including F. verticillioides and F. fujikuroi (Myung et al., 2011; Niermann et al., 2011).

veA is extensively conserved in Ascomycetes (Myung et al., 2011). Most of the studies on the veA regulatory mechanism of action have been carried out using the model fungus A. nidulans. It is known that KapA α-importin transport the VeA protein to the nucleus, particularly in the dark, a condition that favors ST production (Stinnett et al., 2007, Araujo-Bazan et al., 2009). In the nucleus, VeA interacts with several proteins such as the light-responsive protein FphA, which interacts with the LreA-LreB. FphA, LreA and LreB also have influence fungal development and mycotoxin production (Purschwitz et al., 2008). While FphA negatively regulates sexual development and the synthesis of ST, the LreA and LreB proteins play the opposite role. In the nucleus VeA also interacts with VelB and LaeA (Bayram et al., 2008; Calvo, 2008; Bayram and Braus, 2012). LaeA, a chromatin-modifying protein is also required for the synthesis of ST and other secondary metabolites (Reyes-Dominguez et al., 2007; Bok and Keller, 2004). Deletion of velB decreases and delayed ST production, indicating a positive role in ST biosynthesis (Bayram et al., 2008; Bayram and Braus, 2012).

In addition to its role as global regulator of development and secondary metabolism, VeA is also require for normal plant pathogenicity by several mycotoxigenic species, such as A. flavus (Duran et al., 2009), F. verticillioides (Myung et al., 2012), F. fujikuroi (Wiemann et al., 2010), and F. graminearum (Merhej et al., 2011). Deletion of veA homologs in these organisms results in a decrease in virulence with a reduction in mycotoxin biosynthesis.

SUMMARY

Over-expression of the fungal transcription factor encoding gene, mtfA (master transcription factor A), located in nuclei of fungal cells leads to an increase in production of penicillin and a decrease in mycotoxin production. Elimination of this gene also leads to decrease in mycotoxin.

For the first time overexpression of mtfA is shown to increase penicillin production and decrease mycotoxin production in the model fungus Aspergillus nidulans. Variations in the expression of mtfA also affect the synthesis of other secondary metabolites. Deletion of mtfA in the model fungus Aspergillus nidulans also decreases or eliminates sterigmatocystin production.

Manipulations to alter the expression of the fungal mtfA gene increase the production of both beneficial fungal secondary metabolites, such as penicillin G, and decrease the production of those secondary metabolites that are detrimental, such as aflatoxin-related mycotoxins.

An application is to increase the production of valuable fungal secondary metabolites and decrease the production of detrimental fungal secondary metabolites in fungal cells.

Increase of beneficial fungal secondary metabolites and decrease of detrimental fungal secondary metabolites is achieved by alteration of the expression of the gene mtfA in cells.

Secondary metabolism in the model fungus Aspergillus nidulans is controlled by the global conserved regulator VeA, which also governs morphological differentiation. Among the secondary metabolites regulated by VeA is the mycotoxin sterigmatocystin (ST). The presence of VeA is necessary for the biosynthesis of this carcinogenic compound. A revertant mutant was identified that able to synthesize ST in the absence of VeA. The point mutation occurred at the coding region of a gene encoding a novel putative C2H2 zinc finger domain type transcription factor denominated as mtfA (master transcription factor). The A. nidulans mtfA gene product localized at nuclei independently of the illumination regime. Deletion of the mtfA gene restored mycotoxin biosynthesis in the absence of veA, but drastically reduced mycotoxin production when mtfA gene expression was altered, by deletion or overexpression, in the Aspergillus nidulans strains with a veA wild type allele. mtfA regulates ST production by controlling the expression of the specific ST gene cluster activator aflR. Importantly, mtfA is also a regulator of other secondary metabolism gene clusters and natural product biosynthesis, such as genes involved in terraquinone production and penicillin biosynthesis. As in the case of ST, deletion or overexpression of mtfA was also detrimental for the expression of terraquinone genes. However, production of penicillin was increased more than 25% by overexpressing mtfA. Furthemore, in addition to its effect on secondary metabolism, mtfA controls sexual and asexual development in A. nidulans. Deletion of mtfA results in a reduction of conidiation and sexual development. mtfA putative orthologs conserved in other fungal species are also disclosed.

In summary, deletion of mtfA in a deletion veA genetic background increases ST toxin production; deletion or overexpression of mtfA in a wild type (veA+) genetic background results in a reduction of ST (Because mtfA is not found in plant or animals, mtfA could be used as a genetic target to prevent or reduce toxin production and possible the production of other secondary metabolites); deletion or over-expression of mtfA in a wild type (veA+) genetic background results in a decrease in the expression of terraquinone genes; deletion of mtfA in a wild type (veA+) genetic background results in a decrease in penicillin production; and deletion of mtfA leads to a reduction of sexual and asexual development in fungus.

Overexpression of mtfA in a wild type (veA+) genetic background results in an increase (more than 25% increase) in penicillin production. Other fungi, including Penicillium chrysogenum, contain a mtfA ortholog. Manipulation of mtfA leads to an increase in penicillin production in A. nidulans.

The RM7 gene and MtfA gene are the same gene. RM7's initial name was renamed mtfA based on the Aspergillus nidulans nomenclature, but they are the same sequence. The accession number and the coding region of the Aspergillus nidulans mtfA gene in the disclosure is: accession number ANID_—08741

Sequence:

ATGGATCTCGCCAACCTCATCTCCCAACCGGGGCCTGAGCCTGCTCTGAC
GGCCAAATCAAGATACAGCCCTCCTGCCTTTGAACCGGGCTCCTTCTACG
CCGCATCTACTTCATTCACGCGGACACAAGCGCCACTATCGCCTCCAGTC
GAGGATAGATCTTCTCGCTGCTCACTGCCATCAATCTCTGCGCTTCTTGA
CAGCGCAGACGGCGCCTCGACACAAGCTCCAAAGCGCCAACGGCTCAGCT
CTCCAATGCACCGTGAACCGCTTGACAAGAACCCATCTGCCGGCGCTGCT
CCCATCCGTCTCCCGCCCACTCCTCCATTGCGCCCCGGCTCCGGCTTCCA
CAGCGCCGGCCACTCGCCCTCGAGCTCCATCTCATCCATCTCGATGATCA
AGTCCGAGTACCCGGCACCACCATCAGCTCCAGTCTCTCTTCCGGGCCTT
CCCAGCCCAACCGACCGCTCGTCCATCTCGAGCCAAGGGTCTGCGCCGCA
GCACCAGCATGGTCCCTACGCCTCGCCAGCTCCCAGCGTGGCGCCCTCTT
ACTCCTCGCCCGTTGAGCCCTCACCCTCATCGGCAATGTACTACCAACAC
CAGCGGCCCGCATCCTCAGGCACATACCAGGCTCCTCCACCCCCGCCGCA
ACACCAGCCCATGATCTCGCCCGTGACACCGGCCTGGCAGCACCACCACT
ACTTCCCTCCTTCCTCAAACACACCCTACCAGCAGAACCACGACCGATAT
ATCTGCCGCACCTGCCACAAGGCGTTCTCGCGGCCCTCGAGTCTGCGCAT
CCACAGCCATAGCCACACCGGCGAGAAGCCATTTCGGTGCACACATGCCG
GATGCGGCAAAGCCTTTAGTGTACGGAGCAACATGAAGCGCCATGAGCGC
GGCTGCCATACCGGGAGGGCTGTCGCGATGGTGTAA

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1. Revertant mutant 7 (RM7) produces NOR. Mycelia growth and production of NOR compound. Approximately 500 conidia of RM7 and RDAE206 were inoculated on top of OMM and incubated for six days at 37° C. under dark conditions. Pinkish or orange color was observed at the bottom of the plates. TLC analysis of NOR production was done. Fungal strains were top-agar inoculated at 10⁶ conidia/ml on top of OMM and GMM and incubated at light and dark conditions for six days. Mycelial cores were taken, toxin were extracted and analyzed as described in methods and materials.

FIG. 2 RM7 mutant has single gene mutation at locus AN8741.2 Map of mtfA gene. Two solid horizontal arrows indicate the two coding regions in the genome fragment of the genomic library plasmid pRG3-AMA-NOT1 that complement the RM7-R2: The coding regions are locus AN8741.2 encoding a putative C2H2 zinc finger domain transcription factor and locus AN8741.2 encoding a hypothetical proteins. Sequencing of the corresponding region in the RM7 revealed that mutation occurred at Locus AN8741.2 designated as mtfA gene. Vertical arrow indicates mutated amino acid in putative C2H2 zinc finger domain containing protein as result of point mutation at start codon (ATG to ATT resulting change of methonine to isoleucine). The protein sequence contains two zinc finger domains represented in lines. Sequence alignment. The amino acid alignment of mtfA gene of A. nidulans (Ani) with putative homologues of A. terreus (Ate), A. flavus (Afl), A. clavatus (Acl) and A. fumigates (Afu) were analyzed using ClusterW (http://www.ebi.ac.uk/Tools/clustalw2/index.htm) land boxshade (http://www.ch.embnet.org/software/BOX_form.html) multiple sequence alignment software programs. MtfA of A. nidulans and its homologs having C2H2 zinc finger domain are underlined. Upward arrow indicates the amino acid metheonine at the position first amino acid of MtfA is converted to isoleucine and protein synthesis could have started using the next methonine as a start codon.

FIG. 3 Targeted replacement of the mtfA gene. The restriction map of the mtfA locus (open arrow) in wild-type is shown in the top line. Gene replacement construct ΔmtfA using A. fumigates pyrG gene (AfpyrG) as a selection marker gene is shown in the bottom line. Recombination events between the mtfA locus and ΔmtfA gene replacement constructs are shown by crosses (X). Restriction enzymes: P, PstI. Replacement construct was obtained from FGSC. Primers used for construction of the replacement construct are shown by small arrows as described in FGSC. Southern blot analyses. The ΔmtfA gene replacement construct was transformed in RDAE206 and RJMP 1.49 strains independently. Digested genomic DNA with PstI was hybridized with probe P1 containing 5′ flanking sequence of mtfA, probe P2 containing the coding sequence of AfpyrG. TLC analysis of NOR production. Growth conditions and toxin analysis by various strains on OMM and GMM medium were carried out as described in FIG. 1B.

FIG. 4 ΔmtfA mutant is defective in growth. A) Mycelial growth: Approximately 500 conidia of each strain were inoculated in the center of the GMM plates and incubated at 37° C. in dark and light conditions for 6 days. B) Quantification of colony diameter of ΔmtfA strains and control strains on GMM.

FIG. 5 ΔmtfA mutant is defective in asexual and sexual development

Conidiogenesis: strains grown in dark as described in 4A were observed for overall development of conidial head formation. Pictures of conidial masses were taken at 2 cm away from the point of inoculation using dissecting microscope. Quantitative analysis of asexual reproduction in ΔmtfA mutant. A 7-mm-diameter core was removed at 2 cm away from the point of inoculation from culture grown as described in FIG. 4A and homogenized in water. Conidia were counted using a hemacytometer (B). Values are means of three replications. Error bar indicates standard errors. C & D. Quantitative analysis of sexual reproduction: Strains grown as described in FIG. 4A were used for the counting Hulle cells (C) and cleistothecia production (D). Hulle cells were counted simultaneously in the same core that was used for conidial counting in FIG. 5B. Cleistothecia were counted after spraying the mycelial disc of 15 mm diameter (taken at 2 cm away from the point of inoculation from the cultures grown as described in FIG. 4A) with 70% ethanol under dissecting microscope. Values are means of three replications. Error bar indicates standard errors. Asterisks indicate no Hulle or cleistothecia production.

FIG. 6 Analysis of asexual and sexual reproduction of ΔmtfA mutant by top agar inoculation. Quantitative analysis of asexual reproduction in ΔmtfA mutant. Strains were spread-inoculated with 5 ml of top agar containing 10⁶ conidia ml⁻¹ on GMM and incubated at 37° C. in dark or light conditions. Culture discs were taken randomly from the plates and the total number of conidia was counted as described in FIG. 5B. Values are means of three replications. Error bar indicates standard errors. Quantitative analysis of sexual reproduction: Strains grown as described above were used for assessing Hulle cells (B) and cleistothecia production (C). Culture discs were taken randomly from the plates and the total number of Hulle cells and cleistothecia were counted as described in FIGS. 5C and 5D. Values are means of three replications. Error bar indicates standard errors. Asterisks indicate no hulla or cleistothecia production.

FIG. 7 mtfA regulates mycotoxin synthesis. TLC analysis of ST production. Strains were grown in GMM liquid shaken cultures (inoculums: 10⁶ conidia ml⁻¹) and incubated at 37° C. Twenty-four h and 48 h old culture supernantants were analyzed for ST as described in the experimental procedure. Band C. Densitometries of A. Analysis of aflR and stcU expression by Northern blot. The mycelia were collected at 48 and 72 hrs of incubation. rRNA serves as a loading control.

FIG. 8 Overexpression of mtfA suppresses the ST production on GMM medium. TLC analysis of ST production. Stains were inoculated in GMM liquid medium at 10⁶ conidia ml⁻¹ and grown for 16 hrs. Mycelia were collected and equal amounts of mycelia were inoculated in TMM agarmedium. The cultures were further incubated for 24 and 48 hrs. Mycelia were collected and toxin analysis was carried out as described in the experimental procedure. Analysis of aflR and stcU expression by Northern blot. The cultures grown as described in FIG. 8A were used for the expression of aflR and stcU analysis. Mycelia were collected at 0 hrs, shifting time—from liquid GMM to solid TMM, 24 and 48 hrs of incubation on TMM. Total RNAs were extracted and expression of aflR and stcU were analyzed. rRNA serves as a loading control.

FIG. 9 MtfA regulates penicillin biosynthesis: Deletion of mtfA reduces penicillin production (upper photo) while overexpression of mtfA increases penicillin production (lower photo). The experiment was repeated several times with the same results.

FIG. 10 mtfA controls the expression of genes involved in the synthesis of other secondary metabolites. Deletion or over-expression of mtfA decreases the expression of terraquinone gene tdiA and tdiB. Left panels, strains (WT, deletion mtfA and complementation strain) were grown in GMM liquid shaken cultures (inoculum: 10⁶ conidia ml⁻¹) and incubated at 37° C. for 48 and 72 h. Right panels, stains (WT and overexpression mtfA) were inoculated in GMM liquid medium at 10⁶ conidia ml⁻¹ and grown for 16 hrs. At that time, mycelia were collected and equal amounts of mycelia were inoculated in TMM liquid medium. The cultures were grown for additional 24 and 48 h after the shift. Total RNAs were extracted and expression of tdiA and tdiB were analyzed. rRNA serves as a loading control.

DETAILED DESCRIPTION OF THE DISCLOSURE

Locus AN8741.2 Encoding C2H2 Type Transcription Factor is Mutated in RM7 Mutant

Seven revertant mutants were generated capable of restoring NOR (orange color intermediate used an indicator of toxin biosynthesis) by chemical mutagenesis of RDAE206 strain which does not have veA gene and does not produce NOR. Genetic and linkage group analysis among these mutant indicated that all the mutants belongs to different linkage group (data not shown). Mutation in rtfA restored the production of NOR (FIG. 1). In order to identify possible other regulatory elements acting downstream of veA gene in the ST biosynthetic pathway, the mutated gene in RM7 mutant was analyzed. In order to make sure RM7 mutant carries single mutation in particular gene, RM7 mutant was crossed with RAV-Pyro2 that lacks veA and stcE genes. However, the heterokaryon of this cross did not produce cleistothecia as described previously (Ramamoorthy et al., 2011). Thus, RM7 mutant was crossed with RAV-pyro1 which lacks stcE gene only. The progeny segregation pattern is described in the methods and material section. Progeny analysis of crosses between RM7 and RAV-pyro1 mutants clearly showed that mutation occurred in a single locus or very closely linked genes in the RM7 mutant (data not shown).

The mutated gene in the RM7-R2 progeny strain (sup-,ΔsteE), obtained as a result of cross between RM7 and Rav-pyro1, not only brought about defective conidiation but also produced pinkish pigmentation instead of orange pigmentation on OMM. This could be due to unknown effect caused by the suppressor gene mutation. Thus, RM7-R2 progeny were used to identify the mutated gene using genomic DNA library complementation (OSHEROV and MAY 2000). Defective conidiation/normal conidiation phenotype and pink/bright orange pigmentation were used as two selection markers for selection of positive transformants directly on the transformation medium with assumption that the positively complemented strain would appear full conidiation and produce orange color pigmentation on OMM medium. Upon transformation of RM7-R2 progeny with the genomic library, several positive transformants were obtained that restored conidiation and bright orange color pigmentation on OMM medium. From the positive transformants, Plasmid DNA were rescued, and sequenced. Sequencing of these rescued plasmids indicated that same kind of plasmids was recovered in independent transformants and the genomic fragment in the plasmid contained two hypothetical proteins: one is putative C2H2 finger domain protein, and another one is unknown hypothetical protein. In order to find out where exactly the mutation happened in the RM7 mutant, the corresponding genomic sequences were amplified from RM7 mutant and sequence-analyzed. Sequence analysis indicated that gene encoding C2H2 finger domain containing gene (designated as mtfA) is mutated and the mutation is G-T transversion at nucleotide 3 of ORF of mtfA, changing start codon from ATG (metheonine) to ATT (isoleucine) of MtfA (FIG. 2). The amino acid sequence of A. nidulans MtfA revealed significant identity with orthologous protein from other Aspergillus spp such as A. clavatus (64%), A. oryzae (64% identity), A. niger (62%) A. terreus (61%), A. flavus (61)%, and A. fumigates (59%) (FIG. 2). MtfA is also conserved in other Acomycetes. No MtfA orthologous protein was found in Saccharomyces cerevisiae. Similarly, there is no orthologous proteins of MtfA in plants and animal kingdom.

Verification of the Generated mtfA Deletion Mutants by DNA Analysis and Effects of the mtfA Deletion Mutation on NOR Production

To make sure that NOR production in RDAE206 strain is indeed due to point mutation of mtfA and also to assess the effect of complete deletion of mtfA on ST synthesis, RDAE 206 and wild-type strain (RJMP1.49) with veA+ genetic background for complete deletion of the mtfA gene were taken. mtfA gene replacement construct was transformed into RDAE206 strain (FIG. 3) and RJMP1.49. The gene replacement was confirmed by Southern blot analysis. (FIG. 3).

A RDAE206ΔmtfA mutant produces NOR as RM7 mutants (FIG. 1) does on OMM and GMM medium indicating mtfA gene functions in connection with veA and regulates mycotoxin synthesis.

Deletion of mtfA results in a slight decrease on fungal growth (FIG. 4) and defects in sexual and asexual development (FIGS. 5 and 6) mtfA is a positive regulator of both asexual and sexual development in A. nidulans. Deletion of mtfA in A. nidulans results in a reduces of conidiation and cleistothecia (fruiting bodies) formation. Complementation of the deletion mutant with the mtfA wild type allele rescues wild type morphogenesis.

mtfA Deletion Decreases ST Production in a Strain with a veA Wild Type Allele

Mutation of mtfA (RM7 strain) and deletion of mtfA (RDAE206ΔmtfA) was reported to restore NOR synthesis in ΔveA genetic background. Interestingly, mutation of mtfA in veA1 genetic background (RM7-R2 strain) also synthesized the same level of NOR as ΔmtfA did. A question was how does mtfA function in ST synthesis in veA+ genetic background. So, the production of ST levels was determined in an ΔmtfA mutant. ST analysis indicated that a ΔmtfA mutant does not produce ST, whereas, wild type (TRV50) and complemented strain (ΔmtfA+com) produced higher levels of ST at 48 hrs of incubation on GMM solid cultures (FIG. 7).

The expression of transcript levels of aflR and stcU gene involved in the ST biosynthetic pathway were analyzed. Northern blot analysis of aflR and stcU transcripts clearly indicated that these genes expression is not observed in ΔmtfA deletion mutant whereas aflR and stcU expression is clearly noticed in its isogenic wild-type and complemented strains (FIG. 7).

A mtfA over-expressing strain, mtfA-OE, was also generated expression mtfA under the control of the alcA promoter. Initially, the strains were grown on liquid GMM for 16 hrs. After shifting the mycelium to the induction medium, the mtfA-OE strain produces less amount of ST compared to the isogenic wild-type strain after 24 and 48 hrs of induction. Similarly, the expression analysis of aflR and stcU was analyzed for confirmation of the ST synthesis data. Northern blot analysis of aflR and stcU indicated that the expression of aflR and stcU was suppressed at 24 and 48 hrs of incubation (FIG. 8) under inducing condition of mtfA overexpression.

mtfA Positively Regulates Penicillin Biosynthesis.

VeA regulates biosynthesis of penicillin genes and mtfA is also influenced by VeA with regard to ST production. To see whether mtfA regulates the PN production, the amount of PN production in ΔmtfA strains was compared with isogenic wild-type strains TRV50.2 and its complemented strain ΔmtfA-com. Deletion of mtfA significantly reduced the level of PN production compared to its isogenic wild-type strain TRV50.2 (FIG. 9). Interestingly, overexpression of mtfA showed enhanced levels of PN compared to its isogenic wild-type stain TRV50. mtfA is positively regulates PN production (FIG. 9).

mtfA Regulates the Expression of Terrequinone Gene.

In order to determine if mtfA is also involved in regulation of terrequinone, anti-tumor compound, biosynthesis, we analyzed the expression of mRNA levels of tdiA and tdiB in the terrequinone biosynthetic cluster were analyzed. At 48 and 72 h of incubation in GMM, the expression of tdiA and tdiB were noticed in TRV50.2 and ΔmtfA-complementation strains, however, the ΔmtfA did not exhibit expression of neither tdiA nor tdiB mRNA transcript at 48 or 72 h of incubation on GMM (FIG. 10). Interestingly, mtfA-OE strain showed lower levels of both tdiA and tdiB transcripts compared to the isogenic wild-type strain, TRV50 at both 24 and 48 h after induction shift for mtfA overexpression (FIG. 10).

MtfA Subcellular Localization

MtfA is located mainly in nuclei

EXAMPLES

Examples are provided for illustrative purposes and are not intended to limit the scope of the disclosure.

Materials and Methods

Novel veA-Dependent Genetic Elements

To identify novel veA-dependent genetic elements involved in the regulation of ST biosynthesis in the model system A. nidulans, a mutagenesis in a deletion veA strain to was performed to obtain revertant mutant that regain the capacity to produce toxin. Several revertant mutants (RM) were obtained. In the present study we characterized one of the selected revertants, RM7 is disclosed. This revertant presented a point mutation in a gene that we denominated mtfA (master transcription factor) encoding a novel putative C2H2 zinc finger domain type transcription factor. The mtfA effect on ST production is veA-dependent. Additionally, mtfA regulates the production of other secondary metabolites, such as penicillin and terraquinone. Furthermore, mtfA is also important for sexual and asexual development in A. nidulans.

A. Aspergillus nidulans mtfA coding region was fused to the alcA(p)promoter and introduced into Aspergillus nidulans cells. Cells were grown in penicillin inducing medium were antibiotic levels increased approximately 25%.

B. Aspergillus nidulans mtfA coding region was fused to the alcA(p)promoter and introduced into Aspergillus nidulans cells. Cells were grown under conditions that allow the production of the mycotoxin sterigmatocystin, an aflatoxin-related mycotoxin. Induction of the overexpression promoter under these conditions

C. Deletion of the mtfA coding region results in elimination or reduction of the mycotoxin sterigmatocystin even under conditions that induce toxin production.

Improved yield in penicillin G production has been already achieved by overexpression of mtfA. Over-expression can be also be achieved by using other strong promoters (contitutive or inducible) or by introducing multicopies of all or parts of the mtfA gene in cells.

Fungal Strains and Growth Conditions

Fungal strains used in this study are listed in Table 1. Media used include complete media YGT (0.5% yeast extract, 2% dextrose, trace elements), glucose minimal media (GMM) (1% dextrose, nitrate salts, trace elements pH-6.5) and oat meal media (OMM) (1% oat meal). Nitrate salts, trace elements and vitamins were as described previously (KAFER 1977). Uridine and uracil, amino acids and vitamins were added when necessary to supplement the auxotrophic markers. Uracil and uridine were added to YGT media for pyrG auxotroph. Glucose was replaced with threonine in threonine minimal medium (TMM) for induction of alcA promoter.

Genetic Techniques

Crosses between strains were followed as described (PONTECORVO et al. 1953.). Crossing between RAV-pyro1 and RM7 was made and progenies were analyzed for the presence/absence of veA and suppressor mutation based on production of NOR and colony morphology and finally confirmed by PCR. The cross resulted in progenies that falls in four groups based on phenotype such as 1. RM7 Parental type (strongly defective in conidiation, positive for NOR production); 2. RAV-pyro1 parental type (normal condiation, positive for NOR production); 3. Recombinant type RM7-R1 (ΔveA and ΔstcE) (appeared as that of RDAE 206 strain. i. e. slightly defective in conidiation and negative for NOR production) and recombinant type RM7-R2 (moderately defective in conidiation and positive for NOR production).

Identification of Mutated Gene in the RM7 Mutant

To find mutated gene in RM7 mutant, it should be complemented with genomic library and positive complemented strain should not produce NOR as that of parental RDAE206 in which mutagenesis was carried out.

RM7-R2 (sup-) producing a brownish-pink pigmentation and moderated defect in conidiation was used for complementation with the A. nidulans genomic library. Positive transformants that restored wild-type phenotype were selected. Genomic DNA was prepared from these transformants; plasmid DNA was rescued by transforming E. coli cells with total genomic DNA. For each gene, 5-10 ampicillin-resistant colonies were picked and the plasmid DNA was extracted and analyzed by restriction digestion and PCR as described previously (OSHEROV and MAY 2000). Finally, both the ends of insert DNA fragments of the isolated plasmid were sequenced and the total genomic sequences present in the plasmid DNA were acquired from the A. nidulans genome database at broad Institute webpage (http://www.broadinstitute.org/annotation/genome/aspergillus_group/MultiHome.html) by BLAST analysis. The exact location of the mutation in RM7 mutants is identified by PCR amplifying and sequencing the corresponding genomic region.

Fungal Transformation and Genetic Manipulation

Polyethylene glycol-mediated transformation of protoplasts was carried out as described earlier (MILLER et al. 1985; YELTON et al. 1983). DNA and RNA isolation, gel electrophoresis, standard molecular manipulations, and Southern and Northern blot analysis were performed as described previously (MILLER et al. 1987; MILLER et al. 1985; SAMBROOK and RUSSELL 2003; VALLIM et al. 2000).

Creation of the mtfA Deletion Mutant by Gene Replacement and Generation of the Complementation Strain

The entire coding region of mtfA gene (locus AN8741.2) was replaced in RDAE206 and RJMP 1.49 strains using the gene deletion cassette obtained from FGSC (http://www.fgsc.net). The deletion cassette was transformed into protoplasts of RDAE206 and RJMP 1.49 strains and transformants were selected on appropriate selection medium and finally confirmed by Southern blot analysis. The deletion strains were designated as RDAEΔmtfA and ΔmtfA respectively.

To complement ΔmtfA, the entire mtfA gene with upstream and downstream fragment was amplified with RM7com1 and RM7com2 primer pair, digested with SacII and KpnI and cloned into pSM3 vector as pSM3-rm7com. The complementation vector, pSM3-rm7com was transformed into ΔmtfA strain and transformants selected on appropriate selection medium and complementation was confirmed by PCR and Southern blot analysis. The complemented stain is designated as ΔmtfA-com.

Strains isogenic with respect to the auxotrophic markers were generated and used in this study, differing only in the presence or absence of mtfA.

Overexpression of mtfA

To over express the mtfA gene, the entire gene of mtfA was amplified starting from start codon to stop codon with RM7-OE1 and RM7-OE2 primer pair, digested with kpnI and PacI and cloned into pmacro having alcA promoter and trpC terminator as pMacroRm7OE vector. The pMacroRm7OE vector was transformed into RJMP 1.49 and transformants were selected on appropriate selection medium and confirmed by Southern blot analysis.

For mtfA over-expression analysis, 400 ml of liquid GMM was inoculated with spore suspension to the final concentration of 10⁶ conidia/ml and incubated for 16 hrs at 37° C. and 250 rpm. The mycelium was collected, washed with double distilled water and squeezed in between paper towel. Equal amount of mycelium was then inoculated on the induction medium, threonine minimal medium ( ). The mycelium was collected at 24 and 48 hrs after shift to the induction medium and ST and RNA analysis for aflR and stcU were carried out.

The strains used in this study were isogenic with respect to the auxotrophic markers differing only in the modifications at the mtfA locus.

Toxin Analysis.

Plates containing 25 ml of solid GMM or OMM with appropriate supplements were inoculated with five milli liter of top agar with spore suspension containing 10⁶ spores/ml. The cultures were incubated in dark. Three cores (16 mm diameter) from each replicate plate were collected in a 50 ml Falcon tube. Alternatively, strains were grown in GMM liquid shaken cultures (inoculum 10⁶ conidia ml⁻¹) and incubated at 37° C., Twenty-four h and 48 h old culture supernantants were analyzed for ST. NOR and ST was also analyzed in TMM overexpression mtfA and control cultures NOR or ST were extracted with CHCl₃. The extracts were dried overnight and then resuspended in 200 μl of CHCl₃. Two micro litre of ST/NOR standard and 25 μl of the samples were fractionated in the silica gel thin-layer chromatography (TLC) plate using benzene and glacial acetic acid [95:5 (v/v)] as a solvent system for ST analysis and chloroform:acetone:n-hexane (85:15:20) as a solvent system for NOR. The plates were then sprayed with aluminum chloride (15% in ethanol) and baked for 10 min at 80° C. ST/NOR bands on TLC plates were viewed by exposing the plates under UV light (375-nm).

Morphological Studies

Asexual and sexual developmental studies were performed in A. nidulans strains TRV50, ΔmtfA, ΔmtfA-COM (Table 1). Plates containing 25 ml of solid GMM with the appropriate supplements were spread-inoculated with 5 ml of top agar containing 10⁶ spores/ml. The cultures were incubated at 37° C. in dark or in light conditions. A 7-mm-diameter core was removed from each spread plate culture and homogenized in water to release the spores. Conidia were counted using a hemacytometer. Identical cores were taken to examine cleistothecial production under a dissecting microscope. To increase visualization of cleistothecia, the cores were sprayed with 70% ethanol to remove conidiphores.

For radial growth analysis, approximately 500 conidia of each strain were point inoculated and incubated for 6 days under light and dark conditions. The radial growth was measured after six days of incubation. Experiments were performed triplicate, and the mean and standard error were calculated.

Penicillin Analysis

The PN bioassay was performed as previously described (Brakhage et al., 1992) with some modifications, using Bacillus calidolactis C953 as the test organism. Briefly, strains were inoculated with approximately 10⁶ spores ml⁻¹ in 25 ml of seed culture medium, and incubated at 26° C. for 24 h at 250 rpm. Mycelia were then transferred to PN-inducing medium (Brakhage et al., 1992). The experiment was carried out with three replicates. After 96 h, the cultures were filtered using Miracloth (Calbiochem, USA) and the supernatants were collected for analysis. Three hundred millilitres of Tryptone-Soy Agar was supplemented with 20 ml of B. calidolactis C953 culture and plated on three 150-mm-diameter Petri dishes. One hundred microlitres of each culture supernatant was added to 7-mm-diameter wells. Bacteria were allowed to grow at 55° C. for 16 h and inhibition halos were visualized and measured. To confirm that the observed antibacterial activity was due to the presence of PN and not to the presence of different fungal compounds in the supernatant, additional controls containing commercial penicillinase from Bacillus cereus (Sigma, MO, USA) were used. A standard curve using various concentrations of PN G (Sigma, MO, USA) was used to determine PN concentration in the samples.

Gene Expression Analysis

Total RNA was extracted from lyophilized mycelial samples using RNeasy Mini Kit (Qiagen) or Triazol (Invitogen), following the manufacturer's instructions. Northern blots were used to evaluate gene expression levels of aflR, stcU, tdiA and tdiB. For making probe for northern blots were aflR, a 1.3-kb EcoRV-XhoI fragment of pAHK25 (Brown et al., 1996); stcU, a 0.75-kb SstII-SmaI fragment of pRB7 (Yu et al., 1996).

Conservation of MtfA Homologs from Different Fungal Specie

When comparing with other fungal species, the deduced amino acids of the homologs from different fungal species are used. Tables 2 and 3 show a high degree of conservation between MtfA homologs from different fungal species, including species that produce penicillin (Penicillium chrysogenum) or other important secondary metabolites such as lovastatin (Aspergillus terreus) at industrial levels, among others.

TABLE 1
Study of mMtfA subcellular localization: mtfA was tagged with GFP
Sl.	Strain
No	name	Genotype	Description	Reference
1	FGSC4	Wild-type	Wild-type control	FGSC
2	RDAE206	yA1, pabA1, pyrG89, argB2,	Mutagenesis study
		ΔstcE::argB, ΔveA ::argB
3	RAV1	wA1, yA2, pabA1, pyrG89, argB2,	Positive NOR producer
		ΔstcE::argB, veA1
4	RAV-pyro1	wA1, yA2, pyroA4, argB2,	To cross with RM7 to find	Ramamoorthy
		ΔstcE::argB, veA1	out mutation pattern in RM7	et al., 2011
			mutants
5	RAV-pyro1	wA1, yA2, pyroA4, argB2,	To cross with RM7 to find	Ramamoorthy
		ΔstcE::argB, ΔstcE::argB	out mutation pattern in RM7	et al., 2011
			mutants
6	RM7	yA2, pabA1, pyrG89,	mutants	Ramamoorthy
		argB2, ΔstcE::argB, ΔveA::argB,		et al., 2011
		mtfA−−
7	RM7-R2	wA1, yA2, pyrG89, argB2,	For transformation and	Present
		ΔstcE::argB, mtfA−−, veA1	identification of mutation in
			the genome
8	RM7-R2-	wA1, yA2, pyrG89, argB2,	Complementation of RM7-	Present
	com	ΔstcE::argB, mtfA−− pRG3-AMA-	R2 with wild-type mtfA
		NOTI-mtfA::pyr4, veA1
9	RJMP1. 49	pyroA4, pyrG89 argB2,	For generation of mtfA gene	Present
		delnku::argB, veA+	replacement
10	TRV50	pyroA4, pyrG89, pyrG+, argB2,	Wild-type control strain	Present
		delnku::argB, veA+
11	TRVΔmtfA	pyroA4, pyrG89, ΔmtfA::AfpyrG,	To study mtfA functionality	Present
		argB2, delnku::argB, veA+
12	TRVΔmtfA-	pyroA4, pyrG89, ΔmtfA::AfpyrG,	Complementation strain of	Present
	com	argB2, delnku::argB, veA+	TRVΔmtfA
		mtfA::pyroA
13	mtfAOE	pyroA4, pyrG89, alcA::mtfA::pyr4,	To over-express mtfA	Present
		argB2, Δnku::argB veA+
14	TRV-Stag	pyroA4, pyrG89	To study interacting proteins	Present
		mtfA::stag::afpyrG, argB2,	by pull down experiments
		delnku::argB, veA+
15	TNO2A7	pyroA4, riboB2, pyrG89, argB2,		Present
		nkuA::argB veA1
16

TABLE 2
Amino acid comparison of the predicted gene products of mtfA homologs.
The analysis  indicates high conservation of this gene and gene product
in different fungal species. Shaded part indicates the domains with
highest conservation.

TABLE 3
Amino acid sequence comparison of MtfA in Aspergillus nidulans with other fungal species.
The comparisons were done using the BLASTp tool provided by NCBI
(National Center for Biotechnology Information) and EMBOSS Needle - Pairwise Sequence
Alignment tool provided by EMBL-EBI (European Bioinformatics Institute).
		EMBOSS Needle - Pairwise
	NCBI	Sequence Alignment
Name of the species, with the strain		E-value	(global alignment)
information	Accession number	(Blastp)	Length	% Identity	% Similarity
Aspergillus oryzae [RIB40]	XP_001823905.1	0	332	64.2	70.8
Aspergillus clavatus [NRRL 1]	XP_001270264.1	2E−111	347	65.1	71.2
Aspergillus niger [CBS 513.88]	XP_001395874.1	5E−106	336	62.8	71.1
Aspergillus kawachii [IFO 4308]	GAA87693.1	6E−106	336	62.8	70.8
Aspergillus fumigatus [Af293]	XP_747808.1	2E−100	342	62	71.3
Neosartorya fischeri [NRRL 181]	XP_001257459.1	5E−94	353	60.9	68.8
Aspergillus flavus [NRRL3357]	XP_002380969.1	9E−94	332	64.2	70.8
Aspergillus terreus [NIH2624]	XP_001209872.1	6E−93	344	62.5	68.9
Penicillium chrysogenum [Wisconsin 54-1255]	XP_002566301.1	3E−74	351	49.3	58.7
Coccidioides immitis [RS]	XP_001239027.1	1E−64	355	44.5	54.6
Ajellomyces capsulatus [H88]	EGC49893.1	9E−64	364	45.9	58.0
Uncinocarpus reesii [1704]	XP_002585289.1	6E−54	440	34.1	42.0
Penicillium marneffei [ATCC 18224]	XP_002148846.1	1E−52	342	38	43.9
Botryotinia fuckeliana	CCD44702.1	6E−47	347	40.3	51.9
Neurospora tetrasperma [FGSC 2508]	EGO52630.1	2E−44	347	39.8	50.1
Neurospora crassa [OR74A]	XP_964590.1	2E−44	343	39.1	50.1
Magnaporthe oryzae [70-15]	XP_003720663	4E−50	335	38.5%	50.4%
Chaetomium globosum [CBS 148.51]	XP_001222401.1	6E−39	382	34.0	45.8
Fusarium oxysporum [Fo5176]	EGU84033.1	3E−38	350	34.9	43.4

	TABLE 4
	Forward
Species	Accession	e-value	% identity	Length
1	Aspergillus oryzoe [RIB40]	XP_000823905.1	0.00E+00	64%	319
2	Aspergillus clavatus [NRRL1]	XP_002270264.1	2.00E−122	64%	335
3	Aspergillus niger [C  933.88]	XP_002395874.1	5.00E−106	62%	325
4	Aspergillus kawach  [IFO 4308]	GAA87693.2	6.00E−106	62%	325
5	Aspergillus fumigatus [AF293]	XP_747808.2	2.00E−100	59%	336
6	Neasortorya fischeri [NRRL 183]	XP_002257459.1	5.00E−94	59%	334
7	Aspergillus flavus [NRRL3357]	XP_002380969.1	9.00E−94	64%	319
8	Aspergillus terreus [NIH2624]	XP_002208872.1	6.00E−93	61%	319
9	Penicillum chrysogenum [Wisconsin 54-1255]	XP_002566301.1	3.00E−74	48%	303
10	Coccidicides Immitis [RS]	XP_002239027.1	1.00E−64	49%	336
11	Ale ces caasulatus [H88]	EGC48893.1	9.00E−64	50%	345
12	Unclnocarous reesil [1704]	XP_002585289.1	6.00E−54	47%	423
13	Penicillium marnef  [ATCC 18224]	XP_002148846.1	1.00E−52	53%	247
14	fu	CCD44702.1	6.00E−47	42%	317
15	Neurospora tetrasperma [FGSC 2508]	EGO52630.1	2.00E−44	43%	305
16	Neurospora crassa [OR74A]	XP_964590.1	2.00E−44	45%	305
17	Magnaporthe cryzze [70.15]	XP_003720663	4.00E−50	43%	309
18	Chaetomium glo sum [CBS 148.51]	XP_001222401.1	6.00E−39	38%	342
19	Fusarium oxysporum [fo5276]	EGU84033.1	3.00E−38	42%	276
	EMBOSS Needle-Alignment
	(Global alignment)
	Species	Length	% identity	% Similarity
1	Aspergillus oryzoe [RIB40]	332	64.20%	70.80%
2	Aspergillus clavatus [NRRL1]	347	65.10%	71.20%
3	Aspergillus niger [C  933.88]	336	62.80%	71.20%
4	Aspergillus kawach  [IFO 4308]	336	62.80%	72.80%
5	Aspergillus fumigatus [AF293]	342	62.00%	71.30%
6	Neasortorya fischeri [NRRL 183]	353	60.90%	68.80%
7	Aspergillus flavus [NRRL3357]	332	64.20%	72.80%
8	Aspergillus terreus [NIH2624]	344	62.50%	68.50%
9	Penicillum chrysogenum [Wisconsin 54-1255]	351	49.30%	58.70%
10	Coccidicides Immitis [RS]	355	44.50%	54.60%
11	Ale ces caasulatus [H88]	364	45.90%	58.00%
12	Unclnocarous reesil [1704]	440	34.10%	42.00%
13	Penicillium marnef  [ATCC 18224]	342	38.00%	43.90%
14	fu	347	40.30%	51.90%
15	Neurospora tetrasperma [FGSC 2508]	347	39.80%	50.20%
16	Neurospora crassa [OR74A]	343	39.10%	50.20%
17	Magnaporthe cryzze [70.15]	335	38.50%	50.40%
18	Chaetomium glo sum [CBS 148.51]	382	34.00%	49.80%
19	Fusarium oxysporum [fo5276]	350	34.80%	49.80%
	Species	Phylum	Class	Genus
	1	Aspergillus oryzoe [RIB40]	ascomycota	Eurotomycetes	Aspergillus
	2	Aspergillus clavatus [NRRL1]	ascomycota	Eurotomycetes	Aspergillus
	3	Aspergillus niger [C  933.88]	ascomycota	Eurotomycetes	Aspergillus
	4	Aspergillus kawach  [IFO 4308]	ascomycota	Eurotomycetes	Aspergillus
	5	Aspergillus fumigatus [AF293]	ascomycota	Eurotomycetes	Aspergillus
	6	Neasortorya fischeri [NRRL 183]	ascomycota	Eurotomycetes
	7	Aspergillus flavus [NRRL3357]	ascomycota	Eurotomycetes	Aspergillus
	8	Aspergillus terreus [NIH2624]	ascomycota	Eurotomycetes	Aspergillus
	9	Penicillum chrysogenum [Wisconsin 54-1255]	ascomycota	Eurotomycetes	Penicillium
	10	Coccidicides Immitis [RS]	ascomycota	Eurotomycetes
	11	Ale ces caasulatus [H88]	ascomycota	Eurotomycetes	Agelomyce
	12	Unclnocarous reesil [1704]	ascomycota	Eurotomycetes	Uncinocarp
	13	Penicillium marnef  [ATCC 18224]	ascomycota	Eurotomycetes	Penicillium
	14	fu	ascomycota	Leatlamycetes
	15	Neurospora tetrasperma [FGSC 2508]	ascomycota	S lomycetes	Neurospora
	16	Neurospora crassa [OR74A]	ascomycota	S lomycetes	Neurospora
	17	Magnaporthe cryzze [70.15]	ascomycota	S lomycetes	Magnaport
	18	Chaetomium glo sum [CBS 148.51]	ascomycota	S lomycetes
	19	Fusarium oxysporum [fo5276]	ascomycota	S lomycetes	Fusarium
	Gap opening penalty = 10.0
	Gap extension penalty = 0.5
	indicates data missing or illegible when filed

TABLE 5
Coding region sequences of some mtfAhomologs from other fungal
species
>ANID_08741 Transcript 1 (Aspergillus nidulans)
ATGGATCTCGCCAACCTCATCTCCCAACCGGGGCCTGAGCCTGCTCTGACGGCC
AAATCAAGATACAGCCCTCCTGCCTTTGAACCGGGCTCCTTCTACGCCGCATCT
ACTTCATTCACGCGGACACAAGCGCCACTATCGCCTCCAGTCGAGGATAGATCT
TCTCGCTGCTCACTGCCATCAATCTCTGCGCTTCTTGACAGCGCAGACGGCGCCT
CGACACAAGCTCCAAAGCGCCAACGGCTCAGCTCTCCAATGCACCGTGAACCG
CTTGACAAGAACCCATCTGCCGGCGCTGCTCCCATCCGTCTCCCGCCCACTCCTC
CATTGCGCCCCGGCTCCGGCTTCCACAGCGCCGGCCACTCGCCCTCGAGCTCCA
TCTCATCCATCTCGATGATCAAGTCCGAGTACCCGGCACCACCATCAGCTCCAG
TCTCTCTTCCGGGCCTTCCCAGCCCAACCGACCGCTCGTCCATCTCGAGCCAAG
GGTCTGCGCCGCAGCACCAGCATGGTCCCTACGCCTCGCCAGCTCCCAGCGTGG
CGCCCTCTTACTCCTCGCCCGTTGAGCCCTCACCCTCATCGGCAATGTACTACCA
ACACCAGCGGCCCGCATCCTCAGGCACATACCAGGCTCCTCCACCCCCGCCGCA
ACACCAGCCCATGATCTCGCCCGTGACACCGGCCTGGCAGCACCACCACTACTT
CCCTCCTTCCTCAAACACACCCTACCAGCAGAACCACGACCGATATATCTGCCG
CACCTGCCACAAGGCGTTCTCGCGGCCCTCGAGTCTGCGCATCCACAGCCATAG
CCACACCGGCGAGAAGCCATTTCGGTGCACACATGCCGGATGCGGCAAAGCCT
TTAGTGTACGGAGCAACATGAAGCGCCATGAGCGCGGCTGCCATACCGGGAGG
GCTGTCGCGATGGTGTAA
>AO090120000155 Transcript 1 (Aspergillus oryzae)
ATGGATCTCGCCAGCCTTATCACTCCGGGTCCTGAACCCATCTACAAGTCTCGG
GCATCCTACAGCCCTCCTCCCAGCTCTGCGGGTTCCTACAAGCGCCCGGCTGAA
CACGACTCTTACTTCTCGTACTCGCGCGCCCCGCAAGCCCCTCTTTCCCCGCCAG
TCGAGGACCAGCCCAAGTGCTCTCTTCCCTCTATCTCGACTCTCTTGGAAGGCG
CCGACAGCGCATCGACATATGCTGCAAAGCGTCAAAGAACCAGCCCACCCCCG
CGCAGGGAGTCTGAGTTCCGTTCACCTTATGACTCAGTCTCAACACCAAATGGC
CCTCCTACTCCACCTTTGCGCCCTGAATCGGGCTTCCACAGCGGCCACCACTCTC
CCTCTGCTTCGTCCGTGACTAGTGGAAAGGCCATCAAGCTCGAGTCGTACTCGC
AAACCCCCATGACACTGCCTAGCCCGTCCGATAGATCCTCGATCTCCAGCCAGG
GCTCTGTCCACCACGTTTCCGCTGCTCCCTACGCTTCTCCTGCCCCCAGTGTGGC
CTCGTACTCTTCGCCGGTTGAATCCTCGGCTCCGTCCGCCATGTACTACCAGAG
ACCTTCCGGCTCCTACCAGACCCCCGCTACTGTGCCTAGCCCCTCCGCTGCTCCT
ATGCCTGCATCTGCCACACACCAGCAGATGATTACTCCCGTCACTCCGGCCTGG
CAGCACCACCACTACTTCCCGCCTTCCAGCTCGGCACCCTACCAACAGAACCAC
GACCGGTATATCTGCCGGACTTGCCACAAGGCCTTCTCCAGACCATCCAGCCTG
CGCATCCACTCTCACAGCCACACTGGCGAGAAGCCATTCCGCTGCACCCACGCC
GGCTGCGGTAAGGCGTTCAGCGTACGAAGCAACATGAAGCGCCACGAGCGCGG
CTGCCACACCGGACGCCCCGTCGCCACCGCCATGGTATAA
>ACLA_097790 Transcript 1 (Aspergillus clavatus)
ATGGATCTCGCAAACCTCATCTCGCATCCCACCTCCGAGGCTGCCTCGACTTTC
AAGTCGAGGTCAGCTCAGAGTCCTCCCGCCTTTCAAGCGAACCCTTACAAGCGT
CTCTCCGGATCGTCGATGAGCTCTTACTTCACCTCCGTACCGACGACCGCGACA
TCGTATTCTCGCACCCCGCAGCCACCACTCTCCCCACCCGTCGACGACCGGCCC
AGATGTTCGCTGCCCTCAATCTCGACTCTACTGGAGGGTGCAGACAGCGCAGCC
GCACATGCAGCGAAACGCCAAAGAACTAGCCTCTCGGCGCATAGGGATCTTGA
TGCCCGTCCTCAGTCGCAACCGTATGACACGATCACCCCACATGCCTTGCCACC
TACGCCGCCATTGCGTCCTGGCTCGGGTTTTCGCAGCAACGGCCATTCGCCTTC
AGCCTCGTCTGTTTCCGCAACGAGCGCCAGCACGGTGATCAAGACCGAAACAT
ATCCTCAGCCTCACATCGGCCTTCCCAGCCCGACAGATCGCTCCTCCATCTCCA
GCCAAGGATCGGTGCAGCATGCGCCCGGAGCGCCGTATGCGTCGCCAGCGCCT
AGCGTGGCATCTTACTCGTCACCTGTCGAGCCTTCCACACCGTCCAGCGCAGCC
TACTATCAAAGAAAGGCCCCTTCAGCTCCCTTCCAGAACCCAGGCAGCGTCCCC
TCAGCATCGGCCGCTCACCAGCAGCTTATCACCCCCATCACCCCCGCCTGGCAA
CACCACCACTATTTCCCCCCATCCAGCTCAACCGCCTACCAGCAGAACCATGAT
CGCTACATCTGCCGCACCTGCCACAAAGCGTTCTCGCGCCCTTCCAGTCTGCGC
ATCCACTCCCACAGCCACACGGGCGAGAAGCCCTTTCGCTGCACACACGCCGGC
TGCGGCAAGGCCTTCAGCGTGCGAAGCAATATGAAGCGCCATGAGCGTGGATG
CCATACAGGCCGCCCAGTCGCCACTGCTATGGTGTCATAA
>gi|317033475: 64-1041 Aspergillus niger CBS 513.88 C2H2
finger domain protein, mRNA
ATGGATCTCGCCAGCCTCATCTCCCACCCGGGACCCGATCCCATCATGAAGTCT
AGAGCCTCATACAGCCCTCCCATGACTTCCTACAAGCGCTCCATCGAACACACC
TCGGACTCCTACTTCCCCTCCGTCCCGATCTCCTACACCCGCTCCCCGCAGCCTC
CTCTCTCCCCGCCTGTCGAGGACCAGTCCCCCAAGTGCTCTCTTCCCTCCATCTC
TACCTTGCTCGAGGGCGCAGATGGCGCAGCTATGCATGCAGCAAAGCGCACTA
GAATGACCCCTCCTCTGCAACGCGACCTTGATTCCCGCCAACAGTCGCAAGCAT
ATGACCTCAAAGCTAACGGCCCCCAAATCGCCTTGCCCCCCACCCCCCCATTGC
GCCCCGGTTCTAGCTTCCACAGCGCCGGACACTCCCCCGCCTCCTCCATCTCTGC
TGCCAGCGATGCTGCTGCGCCCAAGCGCTCCGACTCCTACCCTCAAGTGCCCAT
GGCTCTGCCTAGCCCCTCGGATCGCTCGTCCATCTCCAGCCAGGGTTCAGTTCA
GGGTGTCTCCAGTGCTTCCTACGCTTCTCCCGCTCCCAGCGTCTCTTCCTACTCC
TCTCCCATTGAGCCTTCGGCCTCGTCCGCCATGTTCTACCAACGCACGGCTCCCT
CCACTTCCGCCGCTCCTCTCCCGACGCCAGCAGCACCGCAACAGATTATCTCCC
CTGTGAACCCTGCCTGGCAGCACCACCACTACTTCCCTCCCTCCAGCACCACGC
CCTACCAGCAGAACCATGATCGCTATATCTGCCGCACCTGCCACAAGGCCTTCT
CGAGACCCTCCAGCCTGCGCATCCACTCCCACAGCCACACGGGCGAGAAGCCC
TTCCGCTGCACCCACGCCGGTTGTGGGAAGGCCTTCAGCGTGCGCAGCAACATG
AAGCGTCATGAGCGTGGCTGCCACAGTGGTCGGCCCGTCGCAACCGCCATGGTT
TAA
>(gi|358370982: 305608-305869, 305944-306659) Aspergillus
kawachii IFO 4308 DNA, contig: scaffold00014, whole genome
shotgun sequence
ATGGATCTCGCCAGCCTCATCTCCCACCCGGGACCCGATCCCATCATGAAGTCT
AGAGCCTCATACAGCCCTCCCATGACCTCTTACAAGCGGTCCATCGAACAGACT
TCCGACTCATACTTCCCCTCCGTCCCGATCTCCTACACCCGCTCCCCGCAGCCTC
CTCTCTCCCCGCCTGTGGAGGACCACTCTCCCAAGTGCTCTCTTCCTTCCATCTC
TACCTTGCTTGAGGGCGCAGATGGCGCAGCTATGCACGCAGCAAAGCGTACTA
GAATGACCCCTCCTCTGCAGCGCGACCTTGATTCCCGCCAACAGTCGCAAGCAT
ATGACCTCAAAGCCAACGGCCCCCAAATCGCCCTGCCCCCCACGCCCCCATTGC
GCCCTGGGTCTAGCTTCCACAGCGCCGGCCACTCCCCCGCTTCCTCCATCTCTGC
TGCCAGCGATGCTGCTGCGCCCAAGCGCTCCGACTCCTACCCTCAAGTGCCCAT
GGCTCTGCCTAGCCCTTCGGATCGGTCGTCCATCTCCAGCCAGGGTTCCGTTCA
GGGTGTCTCCAGCGCTTCCTACGCTTCTCCCGCGCCCAGCGTCTCTTCCTACTCC
TCTCCCATTGAGCCTTCGGCCTCCTCCGCTATGTTCTACCAGCGCACGGCGCCTT
CCACTTCGGCCGCTCCTCTCCCGACACCGGCAGCACCGCAACAGATTATCTCCC
CTGTGAACCCTGCCTGGCAACACCACCACTACTTCCCTCCCTCCAGCACCACGC
CCTACCAGCAGAACCATGATCGCTATATCTGCCGCACCTGCCACAAGGCCTTCT
CGAGACCTTCCAGCCTGCGCATCCACTCCCACAGCCACACGGGCGAGAAGCCCT
TCCGCTGCACCCACGCTGGTTGTGGGAAGGCCTTCAGTGTGCGCAGCAACATGA
AGCGTCATGAGCGTGGTTGCCACAGTGGTCGGCCCGTCGCAACTGCCATGGTAT
AA
>Afu6g02690 Transcript 1 (Aspergillus fumigatus)
ATGGATGTCGCAAGCCTCATCTCGCCTTCTGAATCGGATACTGTCCCGACCTTC
AGGTCAAGATCGATTCAGAATTCATCAGCCAGCCATTACAAGCGCCTCTCCGAA
CAATCAACAGGCTCTTACTTCTCTGCTGTGCCAACACATACAACGTCTTACTCTC
GTACCCCTCAGCCACCACTGTCCCCTCCAGCGGAGGACCAGTCCAAATGCTCGC
TTCCTTCCATCTCGATCCTGCTTGAGAACGCAGACGGTGCCGCCGCACACGCAG
CAAAACGCCAACGAAACAGCCTATCAACGCACAGGGATTCGGATCCCCGGCCT
CCATATGACTCGATCACACCACACGCCATGCCGCCAACGCCGCCATTGCGTCCC
GGTTCGGGCTTCCACAGTAATGGCCATTCTCCCTCGACATCATCTGTCTCTGCCG
CTAGCTCCAGCGCTTTGATGAAAAACACAGAATCGTATCCTCAGGCGCCAATTG
GGCTTCCTAGTCCAACGGATCGATCCTCGATCTCGAGCCAAGGGTCCGTTCAGC
ATGCCGCCAGCGCTCCATATGCTTCGCCTGCTCCCAGCGTATCGTCCTTCTCTTC
TCCCATCGAGCCCTCTACACCATCAACTGCCGCTTACTACCAAAGAAATCCTGC
GCCGAACACCTTCCAAAACCCAAGCCCCTTCCCCCAAACATCCACAGCATCTCT
TCCCTCCCCGGGTCATCAACAGATGATTTCTCCCGTCACCCCCGCCTGGCAACA
TCACCACTACTTCCCCCCGTCCAGTTCCACGTCTTACCAGCAGAACCATGATCG
CTACATCTGCCGGACATGCCACAAGGCCTTTTCGCGGCCCTCCAGCCTGCGCAT
CCACTCCCACAGCCACACTGGCGAGAAGCCTTTCCGTTGCACACATGCCGGCTG
CGGCAAGGCCTTCAGCGTACGGAGCAATATGAAGCGTCATGAGCGTGGTTGCC
ATACGGGCCGCCCAGTTGCTACCGCCATGGTCCAATAG
>NFIA_049000 Transcript 1 (Neosartorya fischeri)
ATGGATGTCGCAAGCCTCATCTCGCCTTCTGAATCGGATACAGTTCCGACCTTC
AGGTCAAGATCGATTCAGAATTCATCAGCCAGCCATTACAAGCGCCTCTCCGAA
CAATATACGGGCTCTTACTTCTCTGCTGCACCAACACATACGACGTCTTACTCTC
GTACCCCTCAGCCACCACTGTCCCCTCCAGCCGAGGACCAGCCCAAATGCTCGC
TTCCTTCCATCTCGATTCTGCTTGAGAACGCAGACGGTGCCGCCGCACACGCAG
CAAAACGCCAAAGAACCAGTCTATCAACGCACAGGGATTCGGGGCCTCCATAT
GACTCGATCACACCACACGCCATGCCACCAACGCCGCCACTGCGTCCTGGTTCG
GGCTTCCACAGTAATGGCCATTCTCCCTCGGCATCGTCTGTCTCTGCCACCAGCT
CCAGCGCTGTGATGAAGAACACCGAAACGTATTCTCAGGCGCCAATTGGGCTTC
CTAGTCCGACGGATCGATCCTCGATCTCGAGCCAAGGGTCCGTTCAGCATGCCG
CCGGCGCTCCATATGCTTCGCCTGCTCCCAGCGTGTCGTCCTTCTCTTCTCCCGT
CGAGCCCTCTACACCATCAACTGCCGCTTACTACCAAAGAAACCCTGCGCCGAA
CACCTTCCAAAACCCAGGCTCCTTCCCTCCAACATCCGCGGCCTCTCTTCCTTCC
CCGGGTCATCAACAGATGATTTCTCCCGTCACCCCCGCCTGGCAACATCACCAC
TACTTCCCCCCGTCCAGTTCCACGCCTTACCAGCAGAACCATGATCGCTACATCT
GCCGGACATGCCACAAGGCCTTCTCGCGGCCATCCAGCCTGCGCATCCATTCCC
ACAGCCACACTGGCGAGAAGCCTTTCCGCTGCACACATGCCGGCTGCGGCAAG
GCCTTTAGCGTACGGAGCAATATGAAGCGTCACGAGCGTGGTTGCCATACGGG
CCGCCCGGTTGCTACCGCCATGGTCCAATAG
>AFL2G_ 08180 Transcript 1 (Aspergillus flavus)
ATGGATCTCGCCAGCCTTATCACTCCGGGTCCTGAACCCATCTACAAGTCTCGG
GCATCCTACAGCCCTCCTCCCAGCTCTGCGGGTTCCTACAAGCGCCCGGCTGAA
CACGACTCTTACTTCTCGTACTCGCGCGCCCCGCAAGCCCCTCTTTCCCCGCCAG
TCGAGGACCAGCCCAAGTGCTCTCTTCCCTCTATCTCGACTCTCTTGGAAGGCG
CCGACAGCGCATCGACATATGCTGCAAAGCGTCAAAGAACCAGCCCACCCCCG
CGCAGGGAGTCTGAGTTCCGTTCACCTTATGACTCAGTCTCAACACCAAATGGC
CCTCCTACTCCACCTTTGCGCCCTGAATCGGGCTTCCACAGCGGCCACCACTCTC
CCTCTGCTTCGTCCGTGACTAGTGGAAAGGCCATCAAGCTCGAGTCGTACTCGC
AAACCCCCATGACACTGCCTAGCCCGTCCGATAGATCCTCGATCTCCAGCCAGG
GCTCTGTCCACCACGTTTCCGCTGCTCCCTACGCTTCTCCTGCCCCCAGTGTGGC
CTCGTACTCTTCGCCGGTTGAATCCTCGGCTCCGTCCGCCATGTACTACCAGAG
ACCTTCCGGCTCCTACCAGACCCCTGCTACTGTGCCTAGCCCCTCCGCTGCTCCT
ATGCCTGCATCTGCCACACACCAGCAGATGATTACTCCCGTCACTCCGGCCTGG
CAGCACCACCACTACTTCCCGCCTTCCAGCTCGGCACCCTACCAACAGAACCAC
GACCGGTATATCTGCCGGACTTGCCACAAGGCCTTCTCCAGACCATCCAGCCTG
CGCATCCACTCTCACAGCCACACTGGCGAGAAGCCATTCCGCTGCACCCACGCC
GGCTGCGGTAAGGCGTTCAGCGTACGAAGCAACATGAAGCGCCACGAGCGCGG
CTGCCACACCGGACGCCCCGTCGCCACCGCCATGGTATAA
>ATEG_07186 Transcript 1 (Aspergillus terreus)
ATGGATCTCGCCAGCCTAATCACCCCGGGACCTACTCCCTTCGCATCTCGTCCG
CCTCGAGCTTCCTACAGTCCCCCGGCTTCTTCGTCCGGTTCATACAAGGCCCCTA
ATGAGCCTCATTATACGGGGTCATACTTCCCCGCCATGCCTACTGCGACTCCAG
TGACCACCACTACTTCCTACTCGCGCTCGCCGCAACCGCCTCTCTCTCCTCCCGT
CGAGGACCAGCCCAAGTGCTCTCTCCCTTCCATCTCCACCCTTCTCGGTGCCGCA
GACAGCGCCCCAATGCCCCCAGCTAAGCGCCAGCGCCTCAGTACCCCCGCGCG
CAGAGAATCCGATAGCTGGCTCCAGACAACACCATGCCTGCCTCCGACCCCCCC
GTTGCGTCCAGGCTCCGGCTTCCACAGCAGCGGCCACCGCTCGCCATCATCCAA
CAAGCCCACCGAATCGGCGCCCTTCCCGCAACAGCCCCCCGTGACGCTCCCCAG
TCCCACCGAGCGCTCCTCCATCTCCAGCCAGGGCTCCGCGCACGCGCCGTACGC
TTCGCCCGCCCCCAGCGTCGCCTCGTACTCGTCTCCCGTCGAGCCCTCCCCGGCT
CCCTCCACGCTGTACTACCAGCGCCCCGCCGCGCCTCCAGCGCCTTCCGCCGCC
GCCGCTGCTCCCGCTCCCGCGCAGCCCTTGATCTCCCCCGTCACCCCGGCCTGG
CAGCACCACCACTACTTCCCGCCCTCCAGCTCCACCCCCTACCAGCAGAACCAT
GACCGGTACATCTGCCGTACCTGCCACAAGGCATTCTCGCGCCCCTCGAGTCTG
CGCATCCATTCGCACAGTCACACCGGCGAGAAGCCCTTCCGCTGCACCCACGCC
GGCTGCGGCAAGGCCTTCAGCGTCCGCAGCAACATGAAGCGCCATGAGCGCGG
ATGCCACAGCGGCCGTCCGGTTGCTACCGCTATGGTATGA
>gi|255951067|ref|CM_002566255.1|Penicillium chrysogenum
Wisconsin 54-1255 hypothetical protein (Pc22g24110) mRNA,
complete cds
ATGGATCTCTCCAACCTCCTCTCTCACAGCGCGGCTGTCAAGCCGATCTATACTC
CTGTCGAGTCCAGTTACTATAAGCGCTCGCCGCCTCTGTCGCCGCCAGCCGAAG
AGCCCAAGGTCTCATTGCCTTCAATCTCGTCTCTCTTTGAGGGTGCTGATGGTGC
TCAGCACGCAGCTACCTCGCTAACCCTAAACCTTCCAGAGCGCCAACGCTTGTC
ACCATCTCTCGGTGACCGCCATGTCCGGGTTCAGTCCTACGAACTGCCCCCAAC
ACCACCTCTGCGCCCCGGCTCTGGCCACGCCCACCGCCGCGCATCTCCCGTGGA
GTCGCTGTCTCACAAGGAAGCACACCAGCATCACCTTCACCGTTCCTCTATCTC
CAGCAACAGCTCAGTCCACATCCCTCGCAACACAGTACCCTACGCCTCGCCTGT
ACCAAGCGTCTCATCCTACACATCTCCAGTCGACGCTCCTCAACAGCCAATGTA
CTACCCTCGCCCACCAACCACATCCTCCTTCCAGCCCTCAACACCAGCATCAGC
ACCCCAGATGCCCCCTGTCCAGGTCCAGACGCAGCAGCCGCACTCGCACTCTCA
CTCGTCTTCGGCTCTCATCTCTCCTGTCACCCCGGCCTGGCAACACCACCACTAC
TTCCCGCCCTCCACCACAGCCCCGTACCAGCAGAACCACGACCGCTATATCTGC
CGTACATGCCACAAGGCTTTCTCGCGCCCTTCCTCCCTGCGCATCCACTCGCACT
CGCACACTGGCGAGAAGCCCTTCCGCTGCACGCATGCCGGCTGCGGTAAGGCTT
TCTCCGTGCGCAGTAACATGAAGCGCCATGAGCGTGGCTGCCATTCTGGTCGCC
CTGCCCCTGCCCCTGCTGCTACTGCGCTTGTCGTATAG
>gi|119173021|ref|XM_001239026.1| Coccidioides immitis RS
hypothetical protein (CIMG_10049) partial mRNA
ATGAACGTTTCAAGCCTGATCACTTGCGATCAGCCGCACCAATTGCGCGCGCCT
GCATCTTCATATTCTGAGCACCGTCGATCCCCATCCATCCCCAAGCCTTTGCAGA
CGGAGAGCAGTTCATGCGCTTCTCCATACTCGCGGTTCGAGCGTCTCCCTCTTTC
ACCGCCGGAGGAGGATGGCAAGACACAGTTCTCACTTCCTTCTATCTCGTCTCT
TCTTCGGGGCGTAGATGGTGTTTCTGATGCGCACGTTGCTAAGAGACAACGAAC
CAACCCTCCTCCTAGCATTGACTTAGGGATGGAGAGACGGACTATAGACCAAA
CATTAAAGCAGAGGCCAGCGCTGCCTTTGACGCCTCCTCTAAGGCCTGAGTCTG
GCATGAATAGCACAAGCCAGTCGCCGTCAACATCATCGCCACCACGAAGCGCC
ATCTCACTACCGAGTCTTGTTCGGAGTTATCCGTCTCCAGTTTCAGAAGTTCCAG
AGGGACGACGGATGTCACAGATATCGCGACATTCGCGAGGGGCTTCGACGTCG
CAAACTTCTCAACTTTCAGGCCCAGAAACACGTTACCCATCGCCACCAAATGTC
AACTCTCCAACCTTTGCTGCCCCTGTTGAACCAGCGCCAAAGCCGACAGAATAC
TACCCAGCCAGCCGACCGGTAACGTTTCCGCCTGTGGCGTTCGCAGTTCTGCCA
AGCCAGCCAACTCATCCTCAGGTGCTTCCTCTTGGAAGTCCTGCGTGGCAGCAC
CATCATTATTTCCCTCCTTCCAACACAGCAACTTATCCTCTCAATCACGATAGAT
ACATCTGCCGAATATGTCATAAGGCTTTCTCAAGACCGTCCAGCCTGCGAATAC
ACTCCCACAGTCATACTGGCGAGAAGCCTTTCCGGTGCCCCCATGCCGGCTGTG
GGAAAGCG1TTAGCGTGCGAAGCAACATGAAGCGACACGAAAGGGGTTGCCAT
CCTGGAAGATCAGCACCACCATCGGCCCTGGTTAACTGA
>(gi|198250550: c746647-746377, c746321-745555) Ajellomyces
capsulatus H88 supercont1.9 genomic scaffold, whole genome
shotgun sequence
ATGAATTTATCCCACTTGGTGACCAGCTATCATAGCCCTCCTTCGACGTATCCAC
ACTCAGGCACTTCGCAAAAGCGCCAGTCCTTGCAGAGCGAATCTTCATTATCTG
TATCGAACGGATACTACGATCGCAATGCTTCAAATCTTGCATATGCCCGCTCTC
CTCAACCACCCTTATCCCCACCTGTCGAAGAGCAGTCCAGATTCTCTCTTCCTTC
AATATCTAGTTTATTGCAAGGAGCTGACCAACTCTCTCCTGTTCATATAGCTAA
AAAACATCGTCCCAATCCACTCTCAACTGGAGAAGTTGATTTAAAATCGCAGGG
CCATGGAGCCACCCAAAAGCCCATACACAGGCCGAGAATGATTTTACCACCGA
CCCCTCCCATGCGCCCAGGCTCCGGATTAGATGGAAGAAATCACTCTCCTGCCG
GATCGTCGCCATCGTCTGCACACTCTCCCATTTCAGTAGCCAATCTCACAAGTTC
GTCATCGGCGGACCCTTCCTATCAGCATCGGATGCCCCAAGGTCCGTTACCCCC
ACAGTCAACCAGATCGTCCGTATCTCAAAATTCTCCTGTCTCTCTACCCGAAAA
GCATTACGCTCCATCCTCCAATTTACCCACCAGCTCGACTCCATTCGCTTCCCCA
GTTGAACCCCTAGCGAATTCTACGGAATATTATCACCGCCCATCCCATCCCCCTT
CTTTCTCGACATCTATTCCTCTGGCAGCCCCGCCAGCGCAACAGCACCATCACC
ATTCTATGATCTCAACCTGGCAACACCACCACTATTTTCCACCGTCAAATACGG
CTCCCTACCCACAAAATCATGACAGGTATATCTGTCGAATATGTCACAAGGCGT
TTTCTCGGCCTTCTAGTCTGCGGATTCACTCGCACAGCCATACCGGCGAAAAGC
CATTCAAATGCCCGCATGTCAACTGTGGCAAGTCATTTAGTGTCAGGAGTAACA
TGAAGCGACATGAACGGGGTTGTCATACAGGCAGACCTACGCAAGCAGGTTTG
GTGAATTAA
>gi|258569089|ref|XM_002585243.1|Uncinocarpus reesii 1704
conserved hypothetical protein, mRNA
ATGAACGTTTCTAGCCTGATTAGTTGTGATCAGACTGCTCCCTTCCACGGGTCTG
CAACATCATATTTCGAGCATCATCAAAGAATCCGATCGCCTTCCATTCCCAAAA
GATCACACGAAGAGAACAGCTCATCCGCCTCTCCCTACCCTCCTTTTGCAACCC
TGCCTCTTTCGCCACCAGAAGATGACGGGAAGACAACCTTCTCGCTTCCTTCTA
TCTCATCCCTTCTTCAAAGCGTCGACGCTGCTTCTGACACTCACGTTGCCAAACG
GCAACGAGCCAACCCCCCTCCTAGCATTGATTTAGCTCTGGAGAGACGAGGTGC
CTGTGCGGACCAAGCAATCAGACAAAGGCCAGCCCTTCCACTAACGCCTCCCCT
GCGACCAGAGTCGGGAATGGGCGGTGTAAATCACTCGCCATCTGCATCATCCCC
TCCCCGAACCGCTATCTCACTACCCAGCCTCATTGGAAGTTACCCATCGCCAGT
TTCAGAGGCTCCAGAAGGACGACGAATGTCGCAAATCTCACGACACTCAAGCA
GAACTTCCATCTCTCAATCCTCCCAACATCCAGGGCCGGAAGCCCGCTACCCAT
CGCCACCAACTCTCAGCTCTCCTTCCTTCGCCGCTCCTATTGAACCACCTCCAAA
GCCAGAGTACTACTCTTCTGGTGCCCGACCGACCAACTTTCCGCCAGTAACTTT
CGCTGTCCTTCCAAGTCAACCAACGCATCCGCAGATGGTGGCCTTGGGGAGTCC
TGCCTGGCAGCATCACCACTACTTTCCTCCATCAAACACAGCAACTTACCCACT
CAACCACGACAGATACATTTGCCGAATATGCCACAAGGCATTCTCACGGCCGTC
AAGCCTGCGAATTCACTCGCATAGTCACACAGGCGAGAAGCCGTTTCGATGCCC
CCATGCCGGCTGCGGGAAGGCATTCAGCGTGCGAAATCAGCCCCGCAGCCAGC
GCTCGTTAATTGAAAAACGGAAGGGGTACGCGATCGGATTTGACGAATGGGTT
TTGACGATGATAACGCCCACAATACGGAGTACCAACGAGCAAATCTACACAAC
TGCATCGTGTAAGATCGCGAACGTGGCGGTGATCAACATCAATAGAAGAATTG
CCGAGCTTCGCAAGTCATTTCGCAACAGACGTTCGAATGGGACGTTGTCCCCGA
CGAAGCGCCGCGTCAAATTGGCATTTTCCCTGGATTGCCAATCTACATCCTCAT
CCAGGCTTGCCCTTTTACCGCAGTCCCTTTGA
>gi|212537380: 615-1358 Penicillium marneffei ATCC 18224
C2H2 finger domain protein, putative, mRNA
ATGGATAACGTGCCTGCAAGCAAACGTGCCCGCCATGACTCAGGCGACTACAG
CCGTGGCTTCTTACCTCCAACACCGCCAATGCGCCCCTGCTCCGGGTTCACAGA
AGGCAGCTCGCCTGCCTCTCTTCCTTCTGGACGATCACATTCTGCTTCTATAAGC
AGCGCAGTTTCGCATCCATCACACCAACAGCGTACATCTTTACCATCTATTTCTG
CATCTCTTCAAAATACACCAATCCACCCTTCAGAGCGTTTATCCATCTCCTCTCT
CGCCTCTCACGACTCTTCCCGCCTTTCTCACGCCATTCCCAGCCCTTCATCTACC
ACAGCCTCGATCACAACCACAGCGACTCCATCAACGTCATATTATTCTACATCA
GAAGAGAAAGCATATCCACGATCACATAGCACATCCGCTCCAGTGACCCCATC
AACACTTGTCCCACCACCACCCGCCATGCTCTCGCCTGTGAACCACCCAGGCTG
GCAACACCACCACTACTTCCCACTTTCGACTACGACATCATACCCACAAAACCA
CGAGCGGTATGTCTGCCGTACATGCCACAAGGCATTCTCTCGTCCATCCAGTCT
TCGAATCCACTCGCATAGCCACACTGGCGAGAAGCCATTCCGATGCACACATGC
AGGCTGCGGAAAGGCGTTCAGTGTGCGCAGCAATATGAAGCGCCACGAGCGCG
GCTGTCATAGCGGACGACCTATGACGGCAACTGTTGTCTAA
>(gi|325974178: c673869-673659, c673604-673177,
c673115-672801) Botryotinia fuckeliana isolate T4
SuperContig_50_1 genomic supercontig, whole genome
ATGGCCTCATCGTTGGTTTCAAACCCTTATACAGTCCATCCTATGGCTCAACACT
CTTCCTACACATACGTTAACGCACCTCAACCACCACCCTCACCACCCGTAGACG
AAACTTCAAAGTGTTCCCTACCATCTATTTCAAGTCTGTTGGGTTTGGCCGATGG
ATCGAGTCCAACAGAGCAGGCTCAGCAACAGTCATCGCCACAACAAGCAGCTT
TCAAGGAAGATTATAGACCAGAGTCTGGACATCAGTACGGTCCTTCCTCATCAA
TGAGCTCTCGAGGTGCTCTTCCACCTACACCCCCAATGCAATCTGACGGTGGAT
TCGACGGCAGACAATCGCCGTCTCAAGCATCTACTTCATCATATTCAGTAGTTT
CTGCGCCAAATTATTACTTTAATCCTTCTCAAGTCTCGGCCATCAACAATATGGA
GCCTCATGCACAACGCCAGCCAGTCCAAACTGTTACTCGAAGAGTTTCAATGCC
AGTGTCTTCAATGCAATATGGCCATTCTCCGTTCAACGGATCCTACACTATGTCT
CCTGGCGCCCAGTCTTTGAGCTCTTACTATCCAAGCCCGATACAAACACAATCT
CCCCAAGTTTCTTCACTATACTATCAAAGACCACTTCCACAGCAATTTCCTCCGC
CAATGATGCCAGTGTCTGTGACTCTGACTCCATCATCCGGTGCTAATCCATGGC
AACATCATCACTATATCTCTCCTTCCTCAGCAGCCTCATTTCCTCAGTCACAAGA
TAGATACATCTGTCAGACTTGTAACAAAGCTTTTTCGAGACCATCGAGTCTCCG
AATCCACAGCCACTCACATACCGGCGAGAAACCCTTCAAGTGTCCACATCAAA
ACTGTGGGAAAGCCTTCAGCGTTAGGAGCAACATGAAGAGACACGAGCGAGGT
TGTCACAGTTTTGAAAGCGCTTCAATGGTCTGA
>ENA|EGO52630|EGO52630.1 Neurospora tetrasperma FGSC 2508
hypothetical protein: Location: 1 . . . 1000
ATGGCACCCACGACGTTAACGCCTCAATATCCTGCCCAGCCTTATGGCTTCGCT
CCGCCACCCTCCCCTCCTTTGGACGACTCCAACAAGTGCTCCCTGCCCTCGATTT
CGAACCTGCTTGTCATGGCCGATCAGGGATCTCCTACCTCAGAGACATCTCCTC
AGTCTCAGCAATTGCACTTCTCAAAGCCTGACAACCGTCCCAACTCTTCCCAGT
TTGGCAACCCAGCATCGATCAGGGCGAACCTCCCCCCTAGTCCTCCCATGTCTT
CGGAAGCTTCTTTTGAAGGATACCGCTCTCCTTCAAGCAAGCCAGCAAGCCAGT
CTCAGGGCAGCTCCAACTACTACTATGAGACCACGCCGCCTTTGAGCCAGCATG
AAGCCGACTCCCGGCAGATGGCCACTGCTGCACCCAGAGCCCCTGTTCAGTCAT
CAACCTTCCAAACACAGTACCCGTCGTCAGCCGGCTACTCGAGTCAGTCAGGCA
TGAACCCTTATTACCCTCCCATGCAGCCGACACCCCCTCCGCAGCAGCAGATGT
CGGGCTTGTATTATCAGCGACCACTCCCTCAGACTTTCACCCCTGCTGTGCCAGT
TCCAGTCACTCTCGCACCAGTCACGGGAGCCAACCCTTGGCAACATCACCACTA
TATTGCTCCTTCTTCCACTGCATCTTTTCCGCAGTCTCAAGACCGGTACATCTGC
CAGACTTGCAACAAGGCCTTCTCTCGACCGAGCTCATTGCGAATCCACAGCCAC
TCTCACACTGGTGAGAAGCCTTTCAAGTGCCCCCATGCAGGCTGCGGAAAGGCC
TTCAGCGTTCGCAGTAACATGAAGCGTCATGAGCGTGGCTGCCACAGTTTTGAG
AGCAGCAACGGCAGAAGCAGTGGCAACAGCAACAACGGCGCATCTGCCTAG
>gi|85113804|ref|XM_959497.1|Neurospora crassa OR74A
hypothetical protein partial mRNA
ATGGCACCCACGACGTTAACGCCTCAATATCCTGCCCAGCCTTATGGCTTCGCT
CCGCCACCCTCCCCTCCTTTGGACGACTCCAACAAGTGCTCTCTACCCTCGATTT
CGAACCTGCTTGTCATGGCCGATCAGGGATCTCCTACCTCAGAGACATCTCCTC
AGTCTCAGCAATTGCACTTCTCAAAGCCTGACAACCGTCCCAACTCTTCCCAGT
TTGGCAACCCAGCATCGATCAGGGCGAACCTCCCCCCTAGTCCTCCCATGTCTT
CGGAAGCTTCTTTTGAAGGATACCGCTCTCCTTCGAGCAAGCCAGCAAGCCAGT
CTCAGGGCAGCTCCAACTACTACTATGAGACCACGCCGCCTTTGAGCCAGCATG
AAGCCGACTCCCGGCAGATGGCCACTGCTACACCTAGAGCCCCTGTTCAGTCAT
CAACCTTCCAAACACAGTACCCGTCGTCAGCCGGCTACTCGAGTCAGTCAGGCA
TGAACCCTTATTATCCTCCCATGCAGCCGACACCCCCTCCGCAGCAGCAGATGT
CGGGCTTGTATTATCAGCGACCACTCCCTCAGACTTTCACCCCTGCTGTGCCAGT
TCCAGTCACTCTCGCACCAGTCACGGGAGCCAACCCTTGGCAACATCACCACTA
TATTGCTCCTTCTTCCACTGCATCTTTTCCGCAGTCTCAAGACCGGTACATCTGC
CAGACTTGCAACAAGGCCTTCTCTCGACCCAGCTCATTGCGAATCCACAGCCAC
TCTCACACTGGTGAGAAGCCTTTCAAGTGCCCCCATGCAGGCTGCGGAAAGGCC
TTCAGCGTTCGCAGTAACATGAAGCGTCATGAGCGTGGCTGCCACAGTTTTGAG
AGCAGCAACGGCAGAAGCAGTGGCAACAGCAACAACAGCGCATCTGCCTAG
>gi|389646062: 228-1157 Magnaporthe oryzae 70-15
hypothetical protein (MGG_12536) mRNA, complete cds
ATGGCCGCCACCATGATACAACAGCCCTACCCAATTCATCAGCAGCAGTCGCAG
TACAGCTACATGGTTCAGCCTCAGGGCCCGCCTTCGCCGCCCATGGACGACAAC
AAGTGCTCGCTTCCATCCATCTCGAACCTGCTCGGCTTGGCGGATCAAGGATCA
CCAACCTCGGAGACCTCGGCCCAATTCCGCGAGGAGCAGAAGCAACAACAAGC
AGCACAACAATCAAGACCCAACTCGTCACACTATAGCAATGCAGTCCAGTCTGT
GCGCCAGGGCATCCCGCCAACGCCGCCAATGACTTCTGAGACCTCATTCGACGG
TTACAACTCGCCCTCAAACAAGTCGGTCAGCCAGCTTCCCGCCACTGGCTACTA
CTTTGAGGCGACGCCACCCCCAGGCCACATGGAGATGGAGCCCCGCCCGCACA
TGACCAGCGTTTCCAGGGTCCCAGTTCAGGCTCCCTTCGCTCAGTCTGCCTACTC
AGCTCCCTATGGCATGGCCCCCAGCAACCCGATGGCGGCCTACTACCCGACGAT
GCAGCCCACGCCTCCTCCTCAGCAGCCTCAGATCTCTAGCCTTTACTACCAGAG
ACCCCTTCCTCAGGCCTTCCCTCCCATGCCTGTCAACGTCTCCATGGGTCCTCAG
TCTGGCGCCAACCCGTGGCAGCACCACCACTACATCTCGCCATCTGCTGCGGCA
TCTTTCCCTCAGTCCCAGGACCGCTACATCTGCCAGACCTGCAACAAGGCATTC
TCCCGCCCGAGCTCCTTGAGGATACACAGCCACTCGCACACTGGCGAGAAGCCT
TTCAAGTGCCCTCACGCCGGCTGCGGCAAGGCTTTCAGCGTGCGCAGCAACATG
AAGCGCCACGAGAGGGGCTGCCACAACTATGACAGCAGCAGCAGCAACGGCAC
CGCCATGCACTGA
>gi|116193176|ref|XM_001222400.1| Chaetomium globosum
CBS 148.51 hypothetical protein (CHGG_06306) partial mRNA
ATGGCAAACACAATGGTCACACACTACGCGCACGTACCTCAACATAGCCTTCAG
TATGGCTACATGCCGCCACCTTCACCGCCAATGGATGAGGCGGCAAAGTGCTCG
CTCCCCTCTATCTCGAACCTCCTCGGGCTTGCAGACCAAGGATCGCCGACTTCG
GAAACGTCGCCCCAGTCCCAGCAGCAGCAACAGGCGCAGCAGCAGCAGCAACA
GCAATGTATGAGCAGCTCGTGGTGGGATATGGGACACCTAGATACTGACTCGA
CCCCAGCGCAAGGATCCAAGCCGGAGACGAGGCCCAACTCTTCGCATTACACC
AACCCGGTAACCATTCGGACAGGACTCCCGCCCAGCCCGCCCATGTCCTCGGAT
GCATCCTTTGAAGGTTTCAACTCGCCATCGACCAGGTCGGTGAGCCAGGTGCCG
AACGGGTCAAACTACTTCTTTGAGACAACGCCACCGCTTCAGATGGAAGCCGAT
GCACGGCAGATGACCGCTGCCGCCGCCGTCCCGCGAGTTTCTGTCCAGGCTTCA
GCCTACCAGCCCCAGTACGCTCCCGGCCCTGCGTACATGAGTCAACCAGCCATG
ACCTCATACTATCCTCCGATGCAATCCGCGGCGCCACCGCAGACGCAAATGTCC
GGCCTCTACTACCAACGACCGCTTCCTCAGTCTTTTCCGCCTCCGATGTCCATGT
CTATGACTCTTGCGCCGACGGCCGGGAACCCCTGGCAGCACCATCACTACATTG
CCCCTTCGGCGTCAGCATCCTTTCCCCAGAGCCAGGACCGGTATATCTGCCCGA
CGTGCAGCAAAGCCTTCTCGCGGCCCAGCTCGCTGCGGATCCACAGCCACTCGC
ACACGGGCGAGAAGCCCTTCAAGTGCCCGTTCCCGGGTTGCGGCAAGGCCTTCA
GTGTGCGCAGCAACATGAAGCGGCACGAACGTGGGTGCCACAACTACGACAGC
AGCAGCACGACGAGCAGCACCGGCACCATGAACAGCAACACCGGGGGAAGCC
GTCCCTGA
>(gi|342883535: 113711-113828, 113878-114590) Fusarium
oxysporum Fo5176 contig01821, whole genome shotgun sequence
ATGGAGGAACAAAAGTGCTCTCTACCCTCAATCTCGAACCTCTTGGGTTTGGCC
GATGCCGGCTCACCCACGAGTGAGTCCTCACCAACTTCACGGCAACATTCTCCT
CGCTTTGAAGTTCCTCCACCTTCACATGGTCATAGCCGAGCTGGATCTGAATGG
GCTAAATCATCGCACCGTGGGCTTCCCCCTACACCACCTATGAGCACAGACGCA
TCTTTCGAAGGCTACAGCTCCCCCACAAGGAAACCATCCAACCAGGCGTATCCA
GGCTCAGCACCAAGAACATACTATTACGAGACCACACCACCTCTAGAAGCCGA
TGCACAGCGTCAGGCATCAGTAACGGCTATTCCTCGAGCAACACCTCCAGCAAC
GGCTCCTTATCCTCAGCAAGCTCACCCCACGGTATACGCCAACCCAGCACCAGT
GGGCGCTTATTACCCGGCGGCACAGGTGCCTCCTGCTGTCCAGCCTCAAGAGAT
GAACCCTTACTACCAGCGCCCTCTCCCACAGGCTTATCCCCCACCAGTGAGCAT
GCCAGCACCTGCTCCCTCGGGAGCAAATCCTTGGCAGCACCATCACTATCTTAA
CCCAACTGGAGCGGCGGCATTCCCGCAAAGCCAGGACCGGTATATTTGCCCGA
CTTGCAACAAAGCCTTTAGCAGGCCCAGCAGTCTCCGAATCCACAGTCACTCAC
ATACCGGAGAGAAACCCTTCAAGTGTCCCCATGCTGGATGTGGCAAGGCTTTCA
GCGTACGCAGCAACATGAAACGTCATGAGAGGGGCTGTCACAGCTTCGAATTT
AATGGGTCTGTGATTCGGGGTTGA

PUBLICATIONS

These publications are incorporated by reference to the extent they relate materials and methods disclosed herein.

• BROWN, D. W., J. H. YU, H. S. KELKAR, M. FERNANDES, T. C. NESBITT et al., 1996 Twenty-five coregulated transcripts define a sterigmatocystin gene cluster in Aspergillus nidulans. Proceedings of the National Academy of Sciences of the United States of America 93: 1418-1422.
• CALVO, A. M., J. BOK, W. BROOKS and N. P. KELLER, 2004 veA is required for toxin and sclerotial production in Aspergillus parasiticus. Applied and Environmental Microbiology 70: 4733-4739.
• Calvo A. M. 2008. The VeA regulatory system and its role in morphological and chemical development in fungi. Fungal Genetics and Biology 45:1053-61.
• COLE, R. J., and R. H. COX, 1981 Handbook of Toxic Fungal Metabolites. Academic Press, New York.
• DURAN, R. M., J. W. CARY and A. M. CALVO, 2007 Production of cyclopiazonic acid, aflatrem, and aflatoxin by Aspergillus flavus is regulated by veA, a gene necessary for sclerotial formation. Applied Microbiology and Biotechnology 73: 1158-1168.
• KAFER, E., 1977 Meiotic and mitotic recombination in Aspergillus and its chromosomal aberrations. Adv. Genet 19: 33-131.
• KATO, N., W. BROOKS and A. M. CALVO, 2003 The expression of sterigmatocystin and penicillin genes in Aspergillus nidulans is controlled by veA, a gene required for sexual development. Eukaryotic Cell 2: 1178-1186.
• KELLER, N. P., and T. M. HOHN, 1997 Metabolic pathway gene clusters in filamentous fungi. Fungal Genetics and Biology 21: 17-29.
• KIM, H. S., K. Y. HAN, K. J. KIM, D. M. HAN, K. Y. JAHNG et al., 2002 The veA gene activates sexual development in Aspergillus nidulans. Fungal Genetics and Biology 37: 72-80.
• MILLER, B. L., K. Y. MILLER, K. A. ROBERTI and W. E. TIMBERLAKE, 1987 Position-dependent and position-independent mechanisms regulate cell-specific expression of the spoc1 gene-cluster of Aspergillus nidulans. Molecular and Cellular Biology 7: 427-434.
• MILLER, B. L., K. Y. MILLER and W. E. TIMBERLAKE, 1985 Direct and indirect gene replacements in Aspergillus nidulans. Molecular and Cellular Biology 5: 1714-1721.
• MYUNG, K., S. J. LI, R. A. E. BUTCHKO, M. BUSMAN, R. H. PROCTOR et al., 2009 FvVE1 Regulates Biosynthesis of the Mycotoxins Fumonisins and Fusarins in Fusarium verticillioides. Journal of Agricultural and Food Chemistry 57: 5089-5094.
• OSHEROV, N., and G. MAY, 2000 Conidial germination in Aspergillus nidulans requires RAS signaling and protein synthesis. Genetics 155: 647-656.
• PONTECORVO, G., J. A. ROPER, L. M. HEMMONS, K. D. MACKDONALD, A. W. BUFTON et al., 1953. The genetics of Aspergillus nidulans. Adv. Genet. 5: 141-238.
• SAMBROOK, J., and D. W. RUSSELL, 2003 Molecular cloning: a laboratory manual, 3rd ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.
• YELTON, M. M., J. E. HAMER, E. R. DESOUZA, E. J. MULLANEY and W. E. TIMBERLAKE, 1983 Developmental regulation of the Aspergillus nidulans-Trpc Gene. Proceedings of the National Academy of Sciences 80: 7576-7580.
• Yu, J. H., R. A. Butchko, M. Fernandes, N. P. Keller, T. J. Leonard, and T. H. Adams. 1996. Conservation of structure and function of the aflatoxin regulatory gene aflR from Aspergillus nidulans and A. flavus. Curr. Genet. 29: 549-555.

Claims

1. A gene replacement construct designated ΔmtfA.

2. An ΔmtfA mutant.

3. A method to regulate mycotoxin or sterigmatocystin synthesis by fungal genes, the method comprising: (a) obtaining a fungal transcription factor, mtfA; and(b) overexpressing or eliminating the mtfA gene (or parts of the gene or interrupting the gene with an insertion)) in the fungus to be regulated.

4. A method to increase production of penicillin from a fungus, the method comprising: (a) obtaining fungus capable of producing penicillin; and(b) causing the fungus to overexpress the mtfA gene.

5. The method of claim 4 wherein the fungal secondary metabolite is penicillin or other secondary metabolites with commercial value or their chemical derivatives with commercial value.

6. A method to reduce sexual (or resistant structures) and asexual development of a fungus, the method comprising: (a) obtaining the fungus; and(b) deleting mtfA (or parts of the gene or interrupting the gene with an insertion) in the fungus.

7. Orthologs of mtfA.