42 results about "Phytoalexin" patented technology

Topical composition containing at least one comminuted product of elicited dedifferentiated plant cells, whereby said dedifferentiated plant cells are elicited in vitro in a culture in order to synthesise at least one phytoalexin, and whereby the communited product of elicited dedifferentiated plant cells are dispersed in said composition.

A fresh vegetable foodstuff such as fruit, vegetables, grains or nuts is treated to reduce microbial contamination (UV-C irradiation, preferably in a CO2 atmosphere, preferably at -1 to +4° C.) and/or to induce protective phytoalexins (UV-A, UV-B and UV-C irradiation) and/or to destroy aflatoxins (UV irradiation, primarily UV-C). A modular system can be readily adapted to different foodstuffs. It can include treatment modules and support modules (e.g. for cleaning elements of the treatment modules, providing them with controlled environments, and controlling the input of foodstuffs so they are susceptible to treatment).

The invention relates to a degradation agent of the pesticide residue of Chinese herbal medicine and a production method thereof, which utilizes mirco-nano biological coating technology, enzyme active substance control and a stabilization system of active plant cell film and assists with an intelligent slow/controlled release adjuvant, thus promoting crop output and quality, degrading hazardous substances of the pesticide residue and enhancing products to achieve the international standards. The invention contains the components of oligosaccharide, selenic acid lipopolysaccharide, plant humic acid, rare earth, pectin, phytoalexin, organic matters, abscisic acid, vanillic aldehyde, amino acid, boracic acid, zinc sulfate, nicotinamide, sodiumnitro phenolate, phytic acid, ferrous sulfate, lycine, gibberellinn and chelated calcium; process water is added in sequence according to the weight mixture ratio; the mirco-nano technology is adopted and a product is obtained through coating, enveloping, technique processing treatment of mirco-nano structure, dynamic dissolution, high-pressure spray homogenization, filtering, mixing and reaction.

Soybean and Medicago truncatula CYP93C genes have been isolated which encode a cytochrome P450 that can catalyze the aryl migration of a flavanone to yield an isoflavanone intermediate or an isoflavone. Plants can now be genetically engineered to produce isoflavones that provide potential human health benefits and increase disease resistance in plants. Isoflavones can now be produced in transgenic plants species in which isoflavones do not naturally occur, i.e., in species other than legumes. Alternatively, introducing infection-inducible isoflavonoid biosynthesis into non-legumes qualitatively complements these plants phytoalexin defenses against microbial pathogens, whereas over-expression of the isoflavonoid pathway in legumes quantitatively increases this defense response. Finally, modifying the extend of production of isoflavonoids in legume roots positively impacts nodulation efficiency and therefore plant yield.

The flavonoid family of phytochemicals, particularly those derived from soy, has received attention regarding their hormonal activity and their effects on human health and disease. The types and amounts of these compounds in soy and other plants are controlled by both constitutive expression and stress-induced biosynthesis. The health benefits of soy may therefore be dependent upon the amounts of the various hormonally active phytochemicals present. We have identified increased biosynthesis of the isoflavonoid phytoalexin compounds, Glyceollins I, II and III, in soy plants grown under stressed conditions (elicited soy), which exhibit marked anti-estrogenic effects on ER function. Here we demonstrate that specific glyceollins, isolated from elicited soy, displayed anti-estrogenic activity, suppressing basal and estrogen stimulated colony formation of ER-positive estrogen dependent breast cancer cells and inhibiting ER-dependent gene expression of progesterone receptor (PgR) and stromal derived factor-1 (SDF1/CXCL12). Examining the effects of glyceollin on in vivo tumor formation/growth we demonstrate the ability of glyceollins to significantly suppress basal and estrogen-stimulated tumor growth of ER-positive MCF-7 breast and BG-1 ovarian carcinoma cells in ovariectomized female nude mice. We further demonstrate that the effects of glyceollins on suppression of tumor growth correlate with inhibition of estrogen stimulated PgR expression. In contrast to the uterotropic activity of tamoxifen the glyceollins displayed no uterine agonist activity. The Glyceollin (I-III) compounds may represent an important component of the health effects of soy as well as represent novel anti-estrogens useful in the prevention or treatment of breast and ovarian carcinoma.

A composite phytoalexin containing nano-class saccharide for improving and regulating the life quality of plants contains chitosan, biomembrane assistant, phytoalexin, abscisic acid and multi-vitamine phytosaccharide. Its preparing process is also disclosed, which features use of nano technology.

The invention discloses a special nutrition-balanced water-soluble fertilizer for a pear tree. The special nutrition-balanced water-soluble fertilizer for the pear tree comprises the following raw materials in parts by weight: 30-50 parts of urea, 10-16 parts of sodium nitrate, 5-15 parts of calcium superphosphate, 2-8 parts of potassium sulfate, 2-6 parts of potassium chloride, 25-35 parts of a kiln ash potassium fertilizer, 0.1-0.2 part of zinc fulvate, 0.05-0.12 part of ferric fulvate, 0.4-0.8 part of manganese sulfate, 0.15-0.25 part of calcium amino acid, 1-3 parts of boron mud, 0.5-1.5 parts of salicylic acid, 0.2-0.8 part of diethyl aminoethyl hexanoate, 0.1-0.8 part of amino chitooligosaccharide, 0.15-0.25 part of phytoalexin, 1-5 parts of modified sodium carboxymethyl cellulose, 2-6 parts of lignin, 2-6 parts of activated carbon, 1-3 parts of zeolite powder and 1.2-1.4 parts of an auxiliary material. The special nutrition-balanced water-soluble fertilizer for the pear tree can improve the stress resistance of the pear tree, improve the sweetness of pears and prevent early leaf falling, is scientific in nutrient ratio, and can promote pear growth and improve the pear quality.

The present invention provides non-specific exciton gene VdNEP of Verticillium dahliae capable of causing disease resisting allergic reaction on cotton and other plant and its application. VdNEP protein can induce the expression of Arabidopsis thalianum disease course related gene. Low concentration VdNEP protein can induce suspended cotton cell to synthesize gossypol as phytoalexin, while high concentration VdNEP protein can induce the allergic death of suspended cotton cell. When it is injection to cotton cotyledon, the protein in low concentration may cause allergic necrosis spot and the protein in high concentration may cause cotyledon wilting. Treating mature cotton euphylla with the protein will cause the euphylla dewatering. Applying VdNEP provides new way of improving plant disease resistance and has wide application foreground.

The present invention discloses an inhibiting and killing plant pathogenic fungi active constituent of curcuma longa and its preparation and application. The active component is extract extracted by ethanol or methanol from curcuma longa or fine extract extracted further by n-hexane based on the extract extracted by ethanol or methanol. The inhibiting and killing plant pathogenic fungi active constituent of curcuma longa can be prepared inhibiting and killing plant pathogenic fungi and mushroom pathogenic fungi preparation, especially prepared preparation for inhibiting and killing phorna wasabiae Yokogi, sclerotinia sclerotiorum, tomato botrytis cinerea, verticillium, wheat phytoalexin, edible fungi mycogone perniciosa, olive green mycophenolate or P. pallidum. The preparation formulations can be water solution, soluble powder, wettable powder, thick suspending agent and granule. The active components disclosed by this present invention has extensive source of raw materials, no-toxic, easy degradation features, can be developed a non-pollution botanical inhibiting and killing fungi preparation.

Biological pesticide, based on chitosane and entomopathogen nematodes. The invention consists of a new pesticide formulation, bio-stimulating and with fungicide effects, combining the bio-stimulating action due to chitosane to the biological control of plagues in agricultural and forest crops, due to phytopathogen insects by entomopathogen nematodes of the Steinernematidae and Heterorhabditidae families. There is a synergic action between the bio-stimulating and the biological pesticide due to the action of symbiotic bacteria of the Xenorhabdus and Photorhabdus genres, carrying the nematodes of these families. The aforementioned action is synergically enhanced by the bio-stimulating effect of chitosane over plants, on favouring the radicular development and degree of lignification and provoking the elicitation of phytoalexins producer genes, as a defensive mechanism.

The invention relates to a nutritive composition which consists of resveratrol and yeast glucan and has the function of health protection. The nutritive composition overcomes the defects of poor treatment effect and toxic and side effects by adopting Western medicines for hyperglycemic and hypolipemic treatment in the prior art. The resveratrol is an important plant antitoxin and has the functions of antioxidation, prevention and treatment of cardiovascular diseases, prevention of cancer, antivirus and immunoloregulation; the yeast glucan has the functions of clearing intestine, regulating the blood sugar, reducing cholesterin, improving the immunity and so on; and when the two types of immunomodulator, namely the resveratrol and the yeast glucan, are combined and applied, Cdc42 expression is obviously improved, and the resveratrol and the yeast glucan have stronger synergism. For example, the resveratrol and the yeast glucan express obvious synergistic effect in monocytes and neutrophilic granulocytes, and three cytokines (IL-1, IL-6 and TNF-alpha) are obviously lifted; and the nutritive composition influences the restoring activity of spleen cells and fluorouracil-induced leucocytopenia.

The invention discloses a kiwi fruit winter frost damage prevention method. The method includes the steps that foliage fertilizer is applied in October to November at the late growth stage of kiwi fruits, and monopotassium phosphate or phytoalexin or fertility micro element fertilizer is sprayed; after winter comes, more fertilizer is applied, pits at kiwi fruit trunks close to roots are expanded, and rotten manure or pig and cattle pen manure or organic biological fertilizer is applied; the kiwi fruit trunks close to the roots are covered, the kiwi fruit trunks close to the roots are covered with rice straw, straw and weeds in winter, or the kiwi fruit trunks close to the roots are covered with a mulching film; before frost approaches, the mulching film or straw mats cover branches of a kiwi fruit shed frame. The kiwi fruit winter frost damage prevention method has the advantages that tree vigor can be improved through fertilization application, and the stress resistance of the kiwi fruits is improved; the soil temperature can be raised by covering the kiwi fruit trunks close to the roots, so that root systems are protected; by covering the branches of the kiwi fruit shed frame, water loss and cracking of the branches can be prevented. It has been proved that the kiwi fruits can be protected to survive the winter safely.

The invention discloses C-glycosyl transferase and application thereof in synthesis of schaftoside and isoschaftoside. 2-hydroxyflavanone C-glycosyl transferase genes (SbCGTa, GuCGTa, PsCGTa, LpCGTa and AeCGTa) and C-glucose-2-hydroxyflavanone C-glycosyl transferase genes (SbCGTb, ZmCGTb, OsCGTb1, OsCGTb2, GuCGTb, PsCGTb, LpCGTb and AeCGTb) are separated from scutellaria baicalensis, corn, rice, licorice, pistia stratiotes, spirodela oligorrhiza and arisaema erubescens. The invention finds for the first time that proteins coded by the genes participate in synthesis of phytoalexin schaftoside and isoschaftoside in plants, so that a feasible method is provided for synthesizing the schaftoside, the isoschaftoside and analogues thereof by utilizing enzyme catalysis in vitro.

The invention provides a composition useful in the construction industry for the prevention or remediation of mold growth in a man made structure. The composition contains an extruded milo matrix incorporating terpenes, phytoalexins. calcium propionate or combinations of these chemicals having antifungal activity. Methods of making and using the compositions are also disclosed.

Methods of genetically manipulating biology active 4′-O-methylated isoflavonoids have been found based upon the regiospecifity of isoflavone 7-OMT in vivo. Upon transformation and expression of an isoflavonoid O-methyltransferase gene, up-regulation of IOMT in the transgenic plants can be used to increase the accumulation of 4′-O-methylated isoflavonoid phytolalexins, providing for increased disease resistance to the plant. Similar methods can be used to increase accumulation of 4′-O-methylated isoflavonoid nutraceuticals in plants. For down-regulation of IOMT in plants that naturally make 4′O-isoflavonoid phytoalexins and 4′-O-methylated isoflavonoid nutraceuticals, IOMT gene sequences can be transformed in the antisense orientation.

The invention discloses microbial bacterial manure with ascophyllum nodosum as a matrix. The microbial biological manure is prepared by the steps: activating and culturing microbial flora to obtain aseed solution, performing amplification culture on the seed solution to obtain a microbial bacterial agent, then mixing and feeding raw materials into a stirring tank according to a weight ratio of 30% to 70% of ascophyllum nodosum dreg, 1% to 20% of soya bean cake and 1% to 5% of microbial bacterial agent, keeping a water content as 40 to 60%, bagging after the materials are evenly stirred, sealing an opening, obtaining finished product stacking, continuing fermentation and naturally degrading for 7 to 15d to obtain the microbial bacterial manure. The microbial bacterial manure not only can improve soil and improve soil breathability and agglomeration capacity, but also can stimulate plant to generate growth regulating matter (polyamine) and formation of antibiotic (plant antitoxin) afterbeing absorbed by plants.

The invention discloses a method of prompting discoloration of tulip tree leaves in autumn. The method comprises following steps: spraying medicament I to tulip tree leaves; spraying medicament II to tulip trees again after 8-10 days and then spraying medicament III to tulip trees after 6-10 days. The medicament I is a mixed aqueous solution composed of forchlorfenuron and gibberellins. The medicament II is a mixed aqueous solution composed of ethephon and phytoalexin. The medicament III is a mixed aqueous solution composed of citric acid and saccharose.The method of prompting discoloration of tulip tree leaves in autumn has following beneficial effects: the method is easily operated; without affecting normal growth of tulip trees, tulip tree leaves can uniformly turn into fuchsia in autumn so that better sight-seeing effect is obtained; and better economic benefit is obtained.

The invention discloses a water-soluble fertilizer for preventing defoliation of pear trees in early stage. The fertilizer comprises the following raw materials in parts by weight: 40-60 parts of urea, 5-15 parts of potassium dihydrogen phosphate, 5-12 parts of sylvinite, 15-25 parts of plant ash, 2-10 parts of ammonium nitrate, 2-8 parts of a calcium magnesium phosphate fertilizer, 1-2 parts of boric acid, 0.2-0.8 part of salicylic acid, 0.2-0.6 parts of amino chitosan oligosaccharide, 0.3-0.7 part of calcium amino acid, 0.1-0.4 part of diethyl aminoethyl hexanoate, 0.3-0.8 part of phytoalexin, 0.08-0.14 part of zinc fulvic acid, 0.5-0.9 part of ammonium chloride, 0.1-0.4 part of copper fulvic acid, 1-3 parts of peat, 1-2 parts of clay, 1-3 parts of modified microcrystalline cellulose, 1-3 parts of cyclodextrin, and 1-3 parts of an auxiliary material. The fertilizer can improve stress resistance of pear trees, increases sweet taste of pears, prevent defoliation of pear trees in early stage, satisfy needs of growth and development of pear trees with scientific nutrition proportion, promote growth of pear trees, and improve quality.

The invention discloses a universal fertilizer for mangos, and belongs to the technical field of fertilizers. The universal fertilizer is prepared from the following raw materials in parts by weight:50 to 90 parts of composted fertilizers, 30 to 50 parts of potassium nitrate, 8 to 24 parts of cytokinin, 2 to 20 parts of urea, 10 to 23 parts of nucleotide, 1 to 10 parts of ammonium phosphate, 1 to10 parts of calcium superphosphate, 1 to 10 parts of magnesium sulfate, 1 to 5 parts of ferrous sulfate, 1 to 7 parts of zinc sulfate, 1 to 7 parts of borax, 8 to 12 parts of dolomite powder, 2 to 14parts of phytoalexin and 3 to 7 parts of potassium nitrophenolate. The universal fertilizer for mangos has the advantages that the cost is low; a great number of required nutrition elements in a mango growth process are included; meanwhile, the uniform distribution and combination can be realized; mango trees can be promoted to absorb nutrition ingredients; the yield and the quality of the mangocan be improved.

Relating to a preparation method of a novel amino acid foliar fertilizer, the invention discloses a preparation method of an amino acid biological phytoalexin. The production process includes: (1) slant strain culture; (2) liquid seed culture; (3) fermentation tank liquid submerged fermentation culture; (4) filtration; and (5) packaging. The method provided by the invention solves the problems that existing microbial fermentation methods do not have insect prevention and controlling effects and existing amino acid foliar fertilizers lack mineral elements required by plants.