Patent Application
20230172114
The present invention relates to germination of plants utilizing light. More particularly, but not exclusively, the present invention relates to processes and systems for increasing germination and growth in hydroponically grown cellulosic materials with light signaling.
Livestock needs to consume a certain amount of dry matter and nutrients per day to maintain their health. Light is used as an energy source by plants, producing sugars that increase the amount of dry matter and nutrients, promote root development and stem elongation. Light can be used as an environmental que for plants. Light quality and duration can drive or start a variety of plant developmental changes. What is needed is a method and system for light signaling with continuous or intermittent pulses or burst of red and far red light promotes early and rapid stem elongation, germination and root development in hydroponically grown cellulosic materials.
In one aspect of the present disclosure a method for providing light signaling treatment to promote seedling development is disclosed. The method includes placing a plurality of seeds on a growing surface of a growing system. The growing surface includes a top surface for hydroponically growing the plurality of seeds atop of the growing surface. The method may also include providing light signaling to the plurality of seeds on the growing surface. The light signaling is controlled by the growing system. The light signaling may include at least red light. The method may further include increasing gibberellic acid activity of at least one of the plurality of seeds on the seed bed. The gibberellic acid activity is increased by the light signaling. The method may also include increasing a sugar concentration within the plurality of seeds on the seed bed. The sugar concentration is increased by at least the light signaling.
In another aspect of the present disclosure a method for providing light signaling treatment to promote seedling development is disclosed. The method may include providing an aerobic environment utilizing a grower system configured to control a plurality of environmental factors.
The method may also include placing a plurality of seeds on a seed bed of the grower system comprising the aerobic environment. The method may further include exposing the plurality of seeds with light signaling. The light signaling increases germination of the plurality of seeds. The method may also include germinating the plurality of seeds. The germination utilizes phytohormones activated by light signaling. The method may also include growing the seeds until the seeds are dependent on photosynthesis.
In another aspect of the present disclosure, a growing system utilizing light signaling to increase germination and growth of cellulosic material is disclosed. The system may include a seed bed operably supported by a framework and disposed across a length and width of the framework having a first side opposing a second side and a first terminal end opposing a second terminal end. The seed bed is configured to house a plurality of seeds. The system may also have a plurality of lighting elements operably connected to the framework configured to supply light signaling to the plurality of seeds. The lighting elements promote an increase in gibberellic acid activity of the plurality of seeds on the seed belt. The increase in gibberellic acid activity promotes germination of the plurality of seed and the light elements promote an increase in sugar concentrations.
Therefore, it is a primary object, feature, or advantage of the present disclosure to improve over the state of the art.
It is a further object, feature, or advantage of the present disclosure to increase germination in cellulosic material utilizing light signaling.
It is a still further object, feature, or advantage of the present disclosure to increase the sugar concentration in cellulosic material by utilizing light signaling.
Another object, feature, or advantage is to increase the alcohol concentration in cellulosic material utilizing light signaling.
Yet another object, feature, or advantage is to increase root development and promote stem elongation utilizing light signaling.
One or more of these and/or other objects, features, or advantages of the present disclosure will become apparent from the specification and claims that follow. No single aspect need provide each and every object, feature, or advantage. Different aspects may have different objects, features, or advantages. Therefore, the present disclosure is not to be limited to or by any objects, features, or advantages stated herein.
Illustrated aspects of the disclosure are described in detail below with reference to the attached drawing figures, which are incorporated by reference herein.
Illustrated aspects of the disclosure are described in detail below with reference to attached Tables, which are incorporated by reference herein and where:
Table 1 provides sugar profile as influenced by light treatment for multiple cereal species; and
Table 2 provides nutrition profiles as influenced by light treatment in cereal rye.
This disclosure relates to the use of light signaling during controlled hydroponic germination of seeds for increasing stem elongation, sugar concentration, and nutrient digestibility in animal feedstuffs and cellulosic material including feed concentrates, forages, and mineral supplements. In contrast to lettuce, there is a lack of information the ratio of red to far red light on the influence on cereal germination. Cereal species such as wheat, rice, barely, and rye have been considered to be unaffected by light during germination (Chung 2003; Hoang 2014). The action spectra of phytochromes and its influence on phytohormones has been well studied in crops such as lettuce (Borthwick., 1954; Toyomasue, 1998; Sawada, 2008). In general, irradiance of wavelengths near 660 nm has been related to the release of gibberellins during germination whereas irradiance with wavelengths near 730 nm has demonstrated a negative influence. However, even with a general consideration of cereals as non-photoblastic there are multiple reports that demonstrate there is a negative influence of blue light on germination (Chaussat 1983, Gubler 2008, Jacobsen 2013). Use of light signaling on a grower system illustrates how the influence of Red (R)/Far Red (FR) light on both germination and simple sugar concentration of cereal crops is in disagreement with the Barrero theory. Slightly increased stem elongation and significantly higher simple sugar concentration has been observed when targeting a R/FR (630 nm/730 nm) ratio of 2:1 at 200 umol/m2/s intensity throughout germination. Leveraging light signaling during germination and seedling development, the grower system enables the transformation of complex polysaccharides including starch and cellulose, complex proteins, and triglycerides into their reduced monosaccharide, amino acid, sugar, and fatty acid precursors, respectively and elongates the stem.
The plant or seed may refer to any plant from the kingdom Plantae or angiosperms including flowering plants, cereal grains, grain legumes, grasses, roots and tuber crops, vegetable crops, fruit plants, pulses, medicinal crops, aromatic crops, beverage plants, sugars and starches, spices, oil plants, fiber crops, latex crops, food crops, feed crops, plantation crops or forage crops.
Cereal grains may include rice (Oryza sativa), wheat (Triticum), maize (Zea mays), rye (Secale cereale), oat (Avena sativa), barley, (Hordeum vulgare), sorghum (Sorghum bicolor), pearl millet (Pennisetum glacucum), finger millet (Eleusine coracana), barnyard millet (Echinochloa frumentacea), Italian millet (Setaria italica), kodo millet (Paspalum scrobiculatum), common millet (Panicum millaceum).
Pulses may include black gram, kalai, or urd (Vigna mungo var, radiatus), chickling vetch (Lathyrus sativus), chickpea (Cicer arietinum), cowpea (Vigna sinensis), green gram mung (Vigna radiatus), horse gram (Macrotyloma uniflorum), lentil (Lens esculenta), moth bean (Phaseolus aconitifolia), peas (Pisum sativum) pigeon pea (Cajanas cajan, Cajanus indicus), philipesara (Phaseolus trilobus), soybean (Glycine max).
Oilseeds may include black mustard (Brassica nigra), castor (Ricinus communis), coconut (Cocus nucifera), peanut (Arachis hypgaea), Indian mustard (Brassica juncea), toria (Napus), niger (Guizotia abyssinica), linseed (Linum usitatissumun), safflower (Carthamus tinctorious), sesame (Seasmum indicum), sunflower (Helianthus annus), white mustard (Brassica alba), oil palm (Elaeis guniensis). Fiber crops may include sun hemp (Crotalaria juncea), jute (Corchorus), cotton (Gossypium), mesta (Hibiscus), or tobacco (Nicotiana).
Sugar and starch crops may include potato (Solanum tuberosum), sweet potato (Ipomea batatus), tapioca (Manihunt esculenta), sugarcane (Saccharum officinarum), sugar beet (Beta vulgaris). Spices may include black pepper (Piper nigrum) betel vine (Piper betle), cardamom (Elettaria cardamomum), garlic (Allium sativum), ginger (Zingiber officinale), onion (Allium cepa), red pepper or chillies (Capsicum annum), or turmeric (Curcuma longa). Forage grasses may include buffel grass or anjan (Cenchrus ciliaris), dallis grass (Paspalum dilatatum), dinanath grass (Pennisetum), guniea grass (Panicum maximum), marvel grass (Dicanthium annulatum), napier or elephant grass (Pennisetum purpureum), pangola grass (Digitaria decumbens), para grass (Brachiaria mutica), sudan grass (Sorghum sudanense), teosinte (Echlaena mexicana), or blue panicum (Panicum antidotale). Forage legume crops may include berseem or Egyptian clover (Trifolium alexandrinum), centrosema (Centrosema pubescens), gaur or cluster bean (Cyamopsis tetragonoloba), Alfalfa or lucerne (Medicago sativa), sirato (Macroptlium atropurpureum), velvet bean (Mucuna cochinchinensis).
Plantation crops may include banana (Musa paradisiaca), areca palm (Areca catechu), arrowroot (Maranta arundinacea), cacao (Theobroma cacao), coconut (Cocos nucifera), Coffee (Coffea arabica), tea (Camellia theasinesis). Vegetable crops may include ash gourd (Beniacasa cerifera), bitter gourd (Momordica charantia), bottle gourd (Lagenaria leucantha), brinjal (Solanum melongena), broad bean (Vicia faba), cabbage (Brassica), carrot (Daucus carota), cauliflower (Brassica), colocasia (Colocasia esulenta), cucumber (Cucumis sativus), double bean (Phaseolus lunatus), elephant ear or edible arum (Colocasia antiquorum), elephant foot or yam (Amorphophallus campanulatus), french bean (Phaseolus vlugaris), knol khol (Brassica), yam (Dioscorea) lettuce (Lactuca sativa), must melon (Cucumis melo), pointed gourd or parwal (Trichosanthes diora), pumpkin (Cucrbita), radish (Raphanus sativus), bhendi (Abelmoschus esculentus), ridge gourd (Luffa acutangular), spinach (Spinacia oleracea), snake gourd (Trichosanthes anguina), tomato (Lycoperscium esculentus), turnip (Brassica), or watermelon (Citrullus vulgaris).
Medicinal crops may include aloe (Aloe vera), ashwagnatha (Withania somnifera), belladonna (Atropa belladonna), bishop's weed (Ammi visnaga), bringaraj (Eclipta alba.), cinchona (Cinchona sp.) coleus (Coleus forskholli), dioscorea, (Dioscorea), glory lily (Gloriosa superba), ipecae (Cephaelis ipecauanha), long pepper (Poper longum), prim rose (Oenothera lamarekiana), roselle (Hibiscus sabdariffa), sarpagandha (Rauvalfia serpentine) senna (Cassia angustifolia), sweet flag (Acorus calamus), or valeriana (Valeriana wallaichii).
Aromatic crops may include ambrette (Abelmoschus moschatus), celery (Apium graveolens), citronella (Cymbopogon winterianus), geranium (Pelargonium graveolens.), Jasmine (Jasminum grantiflorum), khus (Vetiveria zizanoids), lavender (Lavendula sp.) lemon grass (Cymbopogon flexuosus), mint, palmarosa (Cymbopogon martini), patchouli (Pogostemon cablin), sandal wood (Santalum album), sacred basil (Ocimum sanctum), or Tuberose (Polianthus tuberosa). Food crops are harvested for human consumption and feed crops are harvested for livestock consumption. Forage crops may include crops that animals feed on directly or that may be cut and fed to livestock.
Dry matter is the part of animal feed or crop that remains after its water content is removed. Dry matter includes carbohydrates, fats, proteins, vitamins, minerals, nutrients, or antioxidants. Livestock needs to consume a certain amount of dry matter per day to maintain their health. Fresh pastures have a high-water content and a lower percentage of dry matter. What is needed is a process, apparatus, and system for increasing dry matter in animal feed, forage crops, or food crops. Plant growth and the amount of dry matter are greatly affected by the environment including light. Most plant problems such as decreased dry matter are caused by environmental stress, such as a lack of light or the lack of one or more frequencies of light. Environmental factors such as water, humidity, nutrition, light, temperature, and/or level of oxygen present can affect a plant's growth and development as shown in
Nutrient digestibility is the amount of nutrients absorbed by the individual or animal and is generally calculated as the amount of nutrients consumed minus the amount of nutrients retained in the feces. The incorporation of enzymes into dairy and beef rations has yielded mixed results and has primarily been focused on amylase in cattle. The incorporation of amylase into dairy and beef rations has been shown to increase milk to feed conversions by twelve percent when 15,000 KNUs were supplied in a starch rich ration (Gencoglu et al., 2011). In beef cattle, the addition of 12,000 KNUs of exogenouse amylase improved the daily rate of gain by eight percent % (Tricarico et al., 2007). The direct influence of amylase of milk yield and components it is mixed with increases in milk and milk components reported by few authors (Klingerman et al., 2009). Consistently across trials, the addition of amylase has been reported to improve nutrient digestibility and feed use efficiency (Gencoglu et al, 2011; Tricarico et al., 2007; Klingerman et al., 2009; Andreazzi et al., 2018; Noziere et al., 2014; Meschiatti et al., 2019). In general, experiments where the enzyme is incorporated into a high starch diet and allowed time to act before animal digestion appear to trend higher in overall impact (Tricarico et al., 2007; Klingerman et al., 2009). By using light signaling to influence phytohormone levels, elevated enzymatic activity can be leveraged to increase dry matter, nutrient availability and plant growth.
Oxygen is a necessary component in many plant processes included respiration and nutrient movement from the soil into the roots. The amount of oxygen can influence the efficiency of respiration. Oxygen moves passively into the plant through diffusion. In plants growing in anaerobic or hypoxic conditions, the uptake or disappearance of oxygen is greater than its production by photosynthesis or diffusion by physical transport from the surrounding environment. Anaerobic conditions can cause nutrient deficiencies or toxicities within the plant, root or plant death, reduced growth of the plant, or reduced dry matter. Anaerobic conditions may be caused by a decrease in the amount of oxygen in the air, such as growing a plant or seed in a room without air or oxygen circulation. Waterlogging, where excess water in the root zone of the plant or in the soil which inhibits gaseous exchange with the air, can also cause anaerobic conditions. A prolonged period of oxygen deficiency can lead to reduced yields, root dieback, plant death, or greater susceptibility to disease and pests. Furthermore, during waterlogging, leaf stomata close reducing the ability of the plant or seedling to capture light and ultimately lead to a decline in photosynthetic rate, growth and sugar production. Under aerobic conditions, plant growth can thrive. Aerobic conditions are when there are enough oxygen molecules or compounds and energy present to carry out oxidative reactions, increase the plant's metabolism and increase dry matter, as shown in
Light is a necessary component for plant growth and the increase in the production of enzymes, sugars and starches that increase dry matter, stem elongation and root development. The more light a plant receives, the greater its capacity for producing food and energy via photosynthesis. The energy can be used to produce or increase the expression of enzymes that increase dry matter and enzyme activity. Different types of light may affect plant germination and plant growth differently. Light signaling can increase the sugar and alcohol concentration within the plant, such as from 30 to 50 percent in wheat.
Different light spectrums affect plant germination and simple sugar concentrations in plants. UV-B Resistance Locus8 (UVR8) is sensitive to UV-B light, cryptochromes and phototropins detect UV-A and blue light, while phytochromes sense red light (R) and far-red (FR) light. Phytochromes are most abundant in the plant shoot. Phytochromes can interact with different transcription factors that mediate various plant physiological responses, such as seed germination, seedling photomorphogenesis and stem elongation. Plant growth may be affected by the interaction between endogenous hormone levels, gene expression, transcription factors, and light.
R light and FR light on both germination and simple sugar concentration of cereal crops reporting findings that are in disagreement with the Barrero theory. Slightly increased stem elongation and significantly higher simple sugar concentration are observed when targeting a Red light/Far Right light (630 nm/730 nm) ratio of 2:1 at 200 umol/m2/s intensity throughout germination, as shown in
Temperature influences most plant processes, including photosynthesis, transpiration, respiration, germination, and flowering. As temperature increases up to a certain point, photosynthesis, transpiration, and respiration increase. When the temperature is too low or exceeds the maximum point photosynthesis, transpiration, and respiration decrease, thereby a plant's response to light signaling may decrease. When combined with day-length or light signaling, temperature also affects the change from vegetative to reproductive growth. The temperature for germination may vary by plant species. Generally, cool-season crops (e.g., spinach, radish, and lettuce) germinate between 55° to 65° F., while warm-season crops (e.g., tomato, petunia, and lobelia) germinate between at 65° to 75° F. Low temperatures reduce energy use and increase simple sugar storage whereas adverse temperatures, however, cause stunted growth and poor-quality plants. The specific control of temperature encourages maximum enzyme hydrolysis throughout development while potentially discouraging the cellular division near the onset of photosynthesis thereby increasing dry matter and enzyme activity. Temperatures near the cardinal range of seeds is believed to support maximum enzyme hydrolysis approximately through the first 120 hours. Reducing temperatures below the cardinal value at 120 hours is believed to reduce metabolic activity in tissue readily exposed to the environment while having reduced influence on the seed within the cellulosic material layer decreasing dry matter and enzyme activity.
Water and humidity play an important role plant germination and seedling development. Most growing plants contain ninety percent water, Water is the primary component of photosynthesis and respiration. Water is also responsible for the turgor pressure needed to maintain cell shape and ensure cell growth. Water acts as a solvent for minerals and carbohydrates moving through the plant, acts as a medium for some plant biochemical reactions, increases enzyme production and expression, and cools the plant as it evaporates during transpiration. Water can regulate stomatal opening and closing thereby controlling transpiration and photosynthesis. In some aspects, water may enhance the increase in sugar concentration, root development, and stem elongation from light signaling by opening more stomata. Water is a source of pressure for moving roots through a growing medium such as soil. Humidity is the ratio of water vapor in the air to the amount of water the air can hold at the current temperature and pressure. Warm air can hold more water vapor than cold air. Water vapor moves from an area of high humidity to an area of low humidity. Water vapor moves faster if there is a greater difference between the area of high humidity and the area of low humidity. When the plant's stoma open, a plant's water vapor rushes outside the plant into the surrounding air. An area of high humidity forms around the stoma and reduces the difference in humidity between the air spaces inside the plant and the air adjacent to the plant, slowing down transpiration. If air blows the area of high humidity around the plant away, transpiration increases.
Plant nutrition plays an important role in seedling growth. Plant nutrition is the plant's need for and use of basic chemical elements. Plants need at least 17 chemical elements for normal growth. Carbon, hydrogen, and oxygen can be found in the air or in water. The macronutrients, nitrogen, potassium, magnesium, calcium, phosphorus, and sulfur are used in relatively large amounts by plants. Nitrogen plays a fundamental role in energy metabolism, protein synthesis, and is directly related to plant growth. It is indispensable for photosynthesis activity and chlorophyll formation. The nitrogen signaling pathway may interact with or may be closely connected to the light signaling pathway and gene expression, allowing the plant to grow and develop. Nitrogen promotes cellular multiplication. A nitrogen deficiency results in a loss of vigor and color. Growth becomes slow and leaves fall off, starting at the bottom of the plant. Calcium attaches to the walls of plant tissues, stabilizing the cell wall and favoring cell wall formation. Calcium aids in cell growth, cell development and improves plant vigor by activating the formation of roots and their growth. Calcium stabilizes and regulates several different processes. Magnesium is essential for photosynthesis and promotes the absorption and transportation of phosphorus. It contributes to the storage of sugars, such as the increased sugar concentration from light signaling, within the plant. Magnesium performs the function of an enzyme activator. Sulfur is necessary for performing photosynthesis and intervenes in protein synthesis and tissue formation.
The plant micronutrients or trace elements, iron, zinc, molybdenum, manganese, boron, copper, cobalt, and chlorine, are used by the plant in smaller amounts. Macronutrients and micronutrients can be dissolved by water and then absorbed by a plant's roots. A shortage in any of them leads to deficiencies, with different adverse effects on the plant's general state, depending upon which nutrient is missing and to what degree. Fertilization may affect dry matter and enzyme activity. Fertilization is when nutrients are added to the environment around a plant. Fertilizers can be added to the water or a plant's growing surface, such as soil. Additional micronutrients and macronutrients can be added to the plant by the grower system.
Seedling development can be split into four growing stages: imbibition, plateau, germination, and seedling. Imbibition is the uptake of water by a dry seed. As the seed intakes the water, the seed expands, enzymes are released, and food supplies become hydrated. The enzymes become active, and the seed increases its metabolic activity. During imbibition the relative humidity is high and may range from 90% to 98% relative humidity. The temperature may range from 76° F. to 82° F. or 22° C. to 28° C. Air movement is minimal. The imbibition may last 18 to 24 hours. The plateau stage is where water uptake increases very little. The plateau stage is associated with hormone metabolism such as abscisic acid and gibberellic acid (GA) synthesis or deactivation. During the plateau stage humidity and temperature may be lower than the imbibition stage. Relative humidity may range from 70% to 90% and the temperature may range from 72° F. to 77° F. or 22° C. to 26° C. Air movement may still be minimal. The plateau stage may last 18-24 hours. Germination is the sprouting of a seed, spore, or other reproductive body. The absorption of water, temperature, oxygen availability, and light exposure may operate in initiating the process. During germination, the relative humidity may be lower than the imbibition and plateau stage. Relative humidity may range from 60% to 70%. The temperature may be the same as the plateau stage and range from 72° F. to 77° F. or 22° C. to 26° C. Air movement may be moderate. Germination may last 24 to 48 hours. The last phase is the seedling or plant development phase where the plant's roots develop and spread, and nutrients are absorbed fueling the plants rapid growth. The seedling stage may last until the plant matures. The seedling stage may also be broken down into additional phases: seedling, budding, flowering, and ripening. The relative humidity may be lowest at this stage and range from 40% to 60%. The temperature may also be the lowest at this stage and range from 68° F. to 72° F. or 20° C. to 22° C. Air movement is high. The seedling phase can range from 72 hours or until the plant reaches maturity. Light signaling can vary in length, time, or frequency during each of the stages of seedling development, remain constant through all stages, or follow a circadian rhythm.
Light signaling may be used to regulate a variety of hormone pathways. The plant hormones associated with plant growth include phytohormones, such as abscisic acid (ABA), gibberellic acid (GA), auxin, and ethylene (ET). These phytohormones regulate seed dormancy and seed germination as well as balance or dictate enzyme production. The ratio of ABA and GA regulates seed dormancy. When levels of ABA are high, stomatal closure, stress signaling, and delay in cell division are triggered downregulating metabolic and decreasing dry matter. High ABA/GA ratios favor dormancy, whereas low ABA/GA ratios result in seed germination. The increase in GA is necessary for seed germination to occur, as GA expression increases, ABA expression decreases, as shown in
GA triggers cell division, stem elongation, and root development. Light signaling can trigger phytohormones to start germination. Enzyme expression is closely linked to metabolic needs during germination. As the plant becomes metabolically active shortly after imbibition, GA is released from the seed embryo signaling the release of a wide profile of enzymes from within the seed including from the aleurone layer surrounding the polysaccharide and protein rich endosperm of the seed. During germination, GA translocates to and interacts with the aleurone layer, thereby releasing or synthesizing hydrolytic enzymes, included α-amylase. The term “amylase” means an enzyme that hydrolyzes 1,4-alpha-glucosidic linkages in oligosaccharides and polysaccharides, including the following classes of enzymes: alpha-amylase, beta-amylase, glucoamylase, and alpha-glucosidase.
Hydrolytic enzymes are some of the most energy efficient enzymes. The hydrolytic enzymes, such as 1,3;1,4-β-glucanase (β-glucanase), α-amylase and β-amylase, are released. The term “beta-glucosidase” means a beta-D-glucoside glucohydrolase that catalyzes the hydrolysis of terminal non-reducing beta D-glucose residues with the release of beta-D-glucose. Once the hydrolytic enzymes are released, they facilitate the hydrolysis of complex storage molecules including cell wall polysaccharides, proteases, storage proteins, and starchy energy reserves that are essential for germination, providing sugars that drive the root growth, into their simpler monomer subunits. Hydrolysis of the storage molecules is one of the primary energy sources of plants. The hydrolytic enzymes break the polymers into dimers or soluble oligomers and then into monomers by water splitting the chemical bonds, as shown in
β-glucanase may hydrolyze 1,3;1,4-β-glucan, a predominant cell wall polysaccharide. The α-amylase cleaves internal amylose and amylopectin residues. The β-amylase exo-hydrolase liberates maltose and glucose from the starch molecules as shown in
Most mammals have a hard time digesting dietary fibers including cellulose. Cellulose polysaccharides are the prominent biomass of the primary cell wall, followed by hemicellulose and pectin. Cellulosic material is any material containing cellulose. The secondary cell wall, produced after the cell has stopped growing, also contains polysaccharides and is strengthened by polymeric lignin covalently cross-linked to hemicellulose. Cellulose is a homopolymer of anhydrocellobiose and is a linear beta-(1-4)-D-glucan. Hemicellulose can include a variety of compounds, such as, Xylans, Xyloglucans, arabinoxylans, and mannans in complex branched structures with a spectrum of Substituents. Cellulose, although polymorphous, is primarily found as an insoluble crystalline matrix of parallel glucan chains. Hemicellulose usually hydrogen bonds to cellulose as well as other hemicelluloses, stabilizing the cell wall matrix. Cellulolytic enzymes or cellulase mean one or more enzymes that hydrolyze a cellulose material. The enzymes may include endoglucanase(s), cellobiohydrolase(s), beta-glucosidase(s), or combinations thereof. The enzymes break the cellulosic material down into cellodextrin or completely into glucose. Hemicellulolytic enzyme or hemicullase are one or more enzymes that hydrolyze a hemicellulosic material forming furfural or arabinose and xylose.
Beta-xylosidase, or beta-D-xyloside xylohydrolase, catalyzes the exo-hydrolysis of short beta (1->4)-xylooligosaccharides to remove successive d-xylose residues from non-reducing termini and may hydrolyze xylobiose. Beta-xylosidase engage in the final breakdown of hemicelluloses. The term “xylanase” means a 1,4-beta D-xylan-Xylohydrolase that catalyzes the endohydrolysis of 1,4-beta-D-Xylosidic linkages in Xylans. The term “endoglucanase” means an endo-1,4-(1,3:1,4)-beta-D-glucan 4-glucanohydrolase that catalyzes endohydrolysis of 1,4-beta-Dglycosidic linkages in cellulose, cellulose derivatives (such as carboxymethyl cellulose and hydroxyethyl cellulose), lichenin, beta-1,4 bonds in mixed beta-1,3 glucans such as cereal beta-D-glucans or Xyloglucans, and other plant material containing cellulosic components.
Lignin is another primary component of the cell wall. Lignin is a class of complex polymers that form key structural materials in support tissues, such as the primary cell wall, in most plants. The lignols that crosslink to form lignin are of three main types, all derived from phenylpropane: coniferyl alcohol (4-hydroxy-3-methoxyphenylpropane), sinapyl alcohol (3,5-dimethoxy-4-hydroxyphenylpropane), and paracoumaryl alcohol (4-hydroxyphenylpropane. Lignin fills the spaces in the cell wall between cellulose, hemicellulose, and pectin components. It can covalently crosslink to hemicellulose mechanically strengthening the cell wall. Ligninolytic enzymes are enzymes that hydrolyze lignin polymers. The ligninolytic enzymes include lignin peroxidases, manganese peroxidases, laccases and feruloyl esterase, and other enzymes described in the art known to depolymerize or otherwise break lignin polymers. Also included are enzymes capable of hydrolyzing bonds formed between hemicellulosic sugars (notably arabinose) and lignin.
Lipids are used as structural components to limit water loss and pathogen infection. These lipids include waxes derived from fatty acids, as well as cutin and Suberin. Lipase is an enzyme that hydrolyzes lipids, fatty acids, and acylglycerides, including phosphoglycerides, lipoproteins, diacylglycerols, and the like. Lipases include the following classes of enzymes: triacylglycerol lipase, phospholipase A2, lysophospholipase, acylglycerol lipase, galactolipase, phospholipase A1, dihydrocoumarin lipase, 2-acetyl-1-alkylglycerophosphocholine esterase, phosphatidylinositol deacylase, cutinase, phospholipase C, phospholipase D, 1-hosphatidylinositol phosphodiesterase, and alkylglycerophospho ethanolamine phosphdiesterase. Lipase increases the digestibility of lipids by breaking lipids down digestibly into saccharides, disaccharides, and monomers.
Phytate is the main storage form of phosphorous in plants. However, many animals have trouble digesting or are unable to digest enzymes because they lack enzymes that break phytate down. Because phosphorus is an essential element, inorganic phosphorous is usually added to animal feed. Phytase is a hydrolytic enzyme that specifically acts on phytate, breaking it down and releasing organic phosphorous. The term “phytase” means an enzyme that hydrolyzes ester bonds within myo-inositol-hexakisphosphate or phytin. Including 4-phytase, 3-phytase, and 5-phyates. By increasing the activity of the hydrolytic enzymes, organic phosphorous is released and inorganic phosphorous does not have to be added to animal feed.
Protease breaks down proteins and other moieties, such as sugars, into smaller polypeptides and single amino acids by hydrolyzing the peptide bonds. Many of the proteins serve as storage proteins. Some specific types of proteases include cysteine proteases including pepsin, papain, and serine proteases including chymotrypsins, carboxypeptidases, and metalloen dopeptidases. Proteases play a key role in germinations through the hydrolysis and mobilization of proteins that have accumulated in the seed. Proteases also play a role in programmed cell death, senescence, abscission, fruit ripening, plant growth, and N homeostasis. In response to abiotic and biotic stresses, proteases are involved in nutrient remobilization of leaf and root protein degradation to improve yield.
Cellular respiration is a set of metabolic reactions that take place in the cells of the seed to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), as shown in
By decreasing environmental stresses and leverage light signaling, the plant can be harvested in an interval that closely aligns with the maximum point of enzyme activity within the plant's life cycle and increased development results, such as an increase in sugar concentrations. Table 1 illustrates the increase in sugar concentrations when a R/FR ratio of light signaling is used. Utilizing light signaling with a R/FR ratio increases the sugar concentrations of Glucose, Fructose, Sucrose, Lactose, and Mannitol for an overall increase in the total sugars.
Hordeum
vulgare
Hordeum
vulgare
Hordeum
vulgare
Avena
sativa
Avena
sativa
Avena
sativa
Avena
sativa
Triticum
aestivum
Triticum
aestivum
Triticum
aestivum
Triticum
aestivum
The increase in sugar concentration provides energy for root development and stem elongation.
Light signaling may increase enzyme activity, increasing plant dry matter and nutrients by signaling phytochromes to activate GA and begin germination. The increase in enzyme activity allows for an increase in plant nutrients or dry matter. For example, barley harvested at the maximum point of enzyme activity, the amount of apparent crude protein increases. Apparent crude protein is the content of the animal feed or plant same that represents the total nitrogen, including true protein and non-protein nitrogen (urea and ammonia). Apparent crude protein is an important indicator of the protein content of a forage crop. In one example the apparent crude protein in barley can be increased by 143% instead of 117% and 125% when harvested on day six, when enzyme activity was maximized. In another example, wheat may be harvested at the maximum enzyme point, such as day six, and the amount of apparent crude protein can be increased by 129%. The neutral detergent fiber digestibility (NDFd) or neutral detergent fiber (NDF) of a crop, plant, or feed sample content is a close estimate of the total fiber constituents of the crop. The NDF contains plant cell wall components such as cellulose, hemicellulose, lignin, silica, tannins, and cutins, and it does not include some pectins. The structural carbohydrates, hemicellulose, cellulose, and lignin, represent the fibrous bulk of the crop. Though lignin is indigestible, hemicellulose and cellulose can be (in varying degrees) digested by microorganisms in animals with either a rumen, such as cattle, goats or sheep, or hind-gut fermentation such as horses, rabbits, guinea pigs, as part of their digestive tract. NDF is considered to be negatively correlated with dry matter intake, as the percentage of NDF increases the animals consume less of the crop. In one example the NDF in barley can be increased by 178% instead of from 132% and 155% when harvested on day six when enzyme activity is maximized. In another example, when wheat may be harvested at the maximum enzyme point, such as day six, the amount of NDF can be increased by 173%. Water-soluble carbohydrates (WSC) are carbohydrates that can be solubilized and extracted in water. WSC's can include monosaccharides, disaccharides, and a few short chain polysaccharides, such as fructans, which are major storage carbohydrates. In one example the WSC in barley increased by 442% instead of from 182% and 191% when harvested on day six when enzyme activity was maximized. In another example, when wheat may be harvested at the maximum enzyme point, such as day six, the amount of WSC can be increased by 553%. The increase in percentage is evidence that by increasing the enzyme activity in plants, complex storage molecules are being broken down into simpler monomer storage molecules increasing nutrient digestibility. Starch is an intracellular carbohydrate found primarily in the grain, seed, or root portions of a plant as a readily available source of energy. In crops where GA activity increases, the amount of starch present in the feed is reduced. This may be due to the breakdown of starch into simpler sugars, such as glucose and maltose, by the enzymes increasing nutrient digestibility of the feed. When enzyme activity is maximized, the amount of starch in barley can be increased by 17% and by 26% in wheat. Dry matter refers to all the plant material excluding water. The nutrient or mineral content of animal feed or plant tissues may be expressed on a dry matter basis or the proportion of the total dry matter in the material. When enzyme activity is maximized the dry matter ratio can increase, such as by 118% in barley and 115% in wheat, instead of by 92% or 95%. These increases allow for increased nutrient and dry matter in the ensiled cellulosic material. The maximization of the enzyme activity may limit the amount of dry matter and nutrient availability lost during the ensiling process.
The breakdown of storage molecules into nutrient digestible monomer subunits can be increased by leveraging GA increased by light signaling in a hydroponic environment. When GA activity is increased in crops, the apparent crude protein content can increase, such as from 15.9% to 20.4% in rye. When ABA activity is increased the apparent crude protein content decreases, for example, from 15.9% to 13.7%. Apparent crude protein content in a crop, plant, or feed sample represents the total amount in nitrogen in the diet, including protein and non-protein nitrogen. The fibrous component of a crop, plant or feed sample content represents the least digestible fiber portion. The least digestible portion includes lignin, cellulose, silica, and insoluble forms of nitrogen. Hemicellulose is not included in the least digestible portion. Crops with a higher acid detergent fiber (ADF) have a lower digestible energy. As the ADF level increases, the digestible energy level decreases. When GA activity is increased, the ADF percentage increases, such as from 9.2% to 12.8% in rye. When ABA activity increases, the ADF percentage decreases, such as from 9.2% to 4.2%. In crops where the GA activity increases the percentage of NDF increases, such as from 21.6% to 27.1% in rye. In crops, where ABA activity increases, the NDF percentage decreases, such as from 21.6% to 15.2% in rye. The ethanol soluble carbohydrates (ESC) of a plant include monosaccharides, such as glucose and fructose, and disaccharides. When GA activity increases the ESC percentage decreases slightly, as energy is needed to grow the plant or crops. In rye the ESC percentage may decrease from 35.3% to 31.7%. In rye the starch percentage decreased from 19.1% to 9.6%. However, when ABA activity increased due to environmental stressors, the amount of starch in the rye increased from 19.1% to 42.2%. Crude fat is an estimate of the total fat content of the crop or feed sample. Crude fat contains true fat (triglycerides), alcohols, waxes, terpense, steroids, pigments, ester, aldehydes, and other lipids. In feed samples where GA activity was increased due to reducing environmental stresses, the amount of crude fat increased. In Rye crops the crude fat may increase from 1.39% to 2.78%. Crude fat also increases when ABA activity increases. In rye crops the crude fat percentage may increase from 1.39 to 1.44%. By breaking down the storage molecules earlier in the development of the plant or by maximizing enzyme activity the heat generated during fermentation or the aerobic phase of ensiling is limited or nonexistent.
Secale
cereale
Secale
cereale
Each seed bed 18 may include a seed belt 28, such as a seed film, operably supported by seed growing table 16. Seed belt 28 can be configured according to the width/depth of seed growing table 16. By way of example, the width/depth of seed belt 28 can be altered according to changes in the width/depth of seed growing table 16. The seed belt 28 material can be hydrophobic, semi-hydrophobic or permeable to liquid. In at least one aspect, a hydrophobic material may be employed to keep liquid atop the seed belt 28. In another aspect, a permeable or semi-permeable material can be employed to allow liquid to pass through the seed belt 28. Advantages and disadvantages of both are discussed herein. Traditional pans use hydrophobic material as part of the seed bed. This may increase water stress as water stays within the seed bed for prolonged periods, creating hypoxic conditions and increasing the concentration of ABA. The seeds use up the available oxygen. In one aspect, seed belt 28 may be discontinuous and may have separate or separated terminal ends. The seed belt 28 may have a length of at least the length of the seed bed 18 and generally a width of the seed bed 18 and may be configured to provide a seed bed for carrying seed. The seed belt 28 may be configured to move across the seed bed 18. Seed belt 28 may also rest upon and slide on top of horizontal members 14. One or more skids or skid plates (not shown) may be disposed between seed belt 28 and horizontal members 14 to allow seed belt 28 to slide atop horizontal members 14 without binding up or getting stuck. The seed bed 18 or seed belt 28 may be positioned at a slope to encourage the drainage of water facilitating an increased oxygenated environment when compared to a pan type fodder set up.
To provide room for expansion the seed belt 28 or seed bed 18 may have a seed egress 68 on one or more sides of the seed bed 18, such as a first side 70 and an opposing second side 72. The seed egress 68 allows room for expansion as the seeds 74 grow, lessening the growth compression of the seeds 74. If the seed bed 18 has walls on the first side 70 or the second side 72, the walls may prevent the seeds 74 from expanding thereby compressing some or all of the seeds. The compressed seeds may receive little to no oxygen resulting in hypoxic or anaerobic conditions. The seed egress 68 may not be covered with seeds during seed out. The empty space allows for expansion as the seed doubles in volume in the first few growth stages, such as in the first 24 hours. If the seeds do not have room to expand, the seed may be subjected to a dense environment with reduced heat, water, and oxygen exchange capabilities.
Each seed bed 18 may include a liquid applicator 46A, 46B, and/or 46C operably configured atop each seed bed 18 for irrigating seed disposed atop each seed bed 18. The seed may be irrigated with water. The dimensions of the seed bed 18 may be configured to accommodate need, desired plant output, or maximization of enzyme activity. Liquid applicator 46A may be configured adjacent at least one longitudinal edge of seed bed 18. Liquid applicator 46A may also be operably configured adjacent at least one lateral edge of seed bed 18. Preferably, liquid applicator 46A may be configured adjacent a longitudinal edge of seed bed 18 to thereby provide drip-flood irrigation to seed bed 18 and seed 74 disposed atop seed bed 18. Liquid applicator 46A may include a liquid guide 48 and liquid distributor 50A, 50B, 50C with a liquid egress 52 having a generally undulated profile, such as a sawtooth or wavy profile generally providing peak (higher elevated) and valley (lower elevated) portions. Liquid applicator 46A can include a liquid line 54 configured to carry liquid 62 from a liquid source 56, such as a liquid collector 58 or plumbed liquid source 56. Liquid 62 may exit liquid line 54 through one or more openings and may be captured upon exiting liquid line 54 by liquid guide 48 and liquid distributor 50A. The one or more openings in liquid line 54 can be configured as liquid drippers, intermittently dripping a known or quantifiable amount of liquid 62 over a set timeframe into liquid guide 48. The one or more openings may be configured intermittently along a length of liquid line 54 or dispersed in groupings along a length of liquid line 54. The one or more openings in liquid line 54 can be operably configured to equally distribute the liquid 62 down the seed bed 18 and slowly drip liquid into the seed bed 18. Drip or flood irrigating the growing surface provides a layer of liquid 62 for soaking the seed and can provide liquid 62 to seed 74 on seed bed 18 in a controlled, even distributive flow. Liquid distributor 50A can be configured with a liquid guide 48 adapted to collect liquid 62 as it exits liquid line 54. Collected liquid may be evenly distributed by liquid distributor 50A and exit the liquid distributor 50A onto the seed bed 18 via the liquid egress 52.
According to at least one aspect, liquid 62 egressing from liquid distributor 50A may travel atop seed belt 28 beneath and/or between a seed mass 74 atop seed belt 28 as shown in
Liquid applicator 46B may be disposed atop each seed bed 18. Liquid applicator 46B may include a plurality of liquid distributors 50B operably configured in a liquid line 54 operably plumbed to a liquid source 56. Liquid distributor 50B can include spray heads, such as single or dual-band spray heads/tips, for spray irrigating seed disposed atop each seed bed 18. In one aspect, a plurality of liquid lines 54 may be disposed in a spaced arrangement atop each seed bed 18. Each liquid line 54 may traverse the length of the holding container and may be plumbed into connection with liquid source 56, as shown in
Liquid applicator 46 may be configured to clean seed bed 18 of debris, contaminants, mold, fungi, bacteria, and other foreign/unwanted materials. Liquid applicator 46 can also be used to irrigate seed 74 with a disinfectant, nutrients, or reactive oxygen species as seed is released onto seed bed 18 from a seed dispenser. A time delay can be used to allow the ROS or nutrients to remain on seed for a desired time before applying or irrigating with fresh water. The process of cleaning, descaling, and disinfecting seed bed 18 using liquid applicator 46D can be automated by a controller 76, graphical user interface, and/or remote control.
Liquid applicator 46 can be operated immediately after seeding of the seed bed 18 to saturate seed with liquid. Seed 74 in early, mid, and late stages of growth can be irrigated with liquid 62 using liquid applicator 46. Liquid applicators 46A-D can be operated simultaneously, intermittently, alternately, and independent of each other. During early stages of seed growth, both liquid applicators 46A-B are operated to best saturate seed to promote sprouting and germination. During later stages of growth, liquid applicator 46A can be used to irrigate more than liquid applicator 46B. Alternatively, liquid applicator 46B can be used to irrigate more than liquid applicator 46A, depending upon saturation level of seed growth. Liquid applicator 46C can be operated during seeding of seed bed 18 and movement of seed bed 18 in the second direction to spray seed dispensed atop seed bed 18 to saturate seed with liquid. The liquid provided to liquid applicators 46A-D could include additives such as disinfectants, reactive oxygen species, fertilizer, and/or nutrients. Nutrients, such as commonly known plant nutrients such as calcium and magnesium, can be added to liquid dispensed from liquid applicators 46A-D to promote growth of healthy plants and/or increase the presence of desired nutrients in harvested seed. Liquid applicators 46C-D can be used also to sanitize seed bed 18 before and/or after winding on or unwinding of the seed belt, the seed bed 18, or seed egress 68 of the seed belt.
Liquid distributors 46A-D and their various components, along with other components of the grower system 10, can be sanitized by including one or more disinfectants, such as reactive oxygen species used by each liquid distributor 50A-D. For example, liquid guide 48, liquid lines 54, liquid egress 52, drain trough 60, liquid collector 58, seed bed 18, liquid distributors 50A-C, and other components of the growing system may be sanitized. In another aspect, liquid applicators 46A-D can be used to clean and sanitize seed bed 18 before, between, or after seeding and harvesting. A separate liquid distributor or manifold can be configured to disinfect or sanitize any components of the growing system that carry liquid for irrigation and cutting or receive irrigation or cutting runoff from the one or more holding containers.
The liquid 62 may be constantly applied, or the applicator may apply the liquid 62 at a set time frame or at a quantifiable amount. For example, the liquid applicator 46A-D may apply the liquid 62 for a first time period such as 1 minute and then the liquid applicator may stop applying the liquid 62 for a second time period, such as 4 minutes, or 1 min of liquid application for every 5 minutes. The cycle may continue until the developmental phase or seed out phase terminates. In another example, the liquid 62 may be applied for 10 min every 2 hours. The liquid applicator 46 may provide a controlled, evenly distributed flow allowing the liquid 62 to reach a maximum number of seeds. Excess liquid 62 may be captured, recycled, and reused by the grower system 10. If the seed bed 18 has an egress or a slant, the slant may aid in the even distribution of the liquid as it egresses through the seed bed 18. In some aspects, the liquid applicator 46 may guide the distribution of the liquid to areas within the seed bed 18, a portion of the seeds 74, or a portion of the plants 74 that need more application. The liquid applicators 46 may also oscillate to cover the larger areas of the seed bed 18 or the entire length and width of the seed bed 18 or seed belt 28.
Each seed bed 18 may include one or more lighting elements 38 or housing lights for illuminating seed atop seed belt 28 to facilitate hydroponic growth of seed or a seed mass atop seed belt 28, as shown in
The grower system 10 may have a control system 84 for controlling different environmental conditions or operating conditions of the grower system. The control system 84 may control at least one air element 78 such as a fan or HVAC system to control air movement around the seed bed, as shown in
In one aspect of the present disclosure a method utilizing light signaling to increase germination and growth of the cellulose material is disclosed and shown in
In another aspect of the present disclosure, a method for providing light signaling treatment to promote seedling development is disclosed and shown in
The disclosure is not to be limited to the particular aspects described herein. In particular, the disclosure contemplates numerous variations in promoting germination and growth utilizing light signaling in cellulosic material. The foregoing description has been presented for purposes of illustration and description. It is not intended to be an exhaustive list or limit any of the disclosure to the precise forms disclosed. It is contemplated that other alternatives or exemplary aspects are considered included in the disclosure. The description is merely examples of aspects, processes, or methods of the disclosure. It is understood that any other modifications, substitutions, and/or additions can be made, which are within the intended spirit and scope of the disclosure.
