12 results about "Pyricularia" patented technology

The application discloses application and a method of a small peptide GLP-1(28-36)amide in preparation of a medicine for preventing and treating rice blast. A scheme discloses application of the small peptide GLP-1(28-36)amide in preparation of a medicine for preventing and treating Pyricularia oryzae, and application of the provided small peptide GLP-1(28-36)amide in inhibiting Pyricularia oryzae and preventing and treating rice blast. The small peptide GLP-1(28-36)amide of the application can effectively inhibit pathogenicity of spores of Pyricularia oryzae in a concentration range of 12.5-100 muM, in particular, the small peptide GLP-1(28-36)amide with a concentration of 100 muM can completely prevent and treat rice blast, and can be used for developing a new type of green pesticide.

The present application provides a novel structure of thiophene compound, the compound has significant inhibitory effect on spore germination and appressorium formation of various plant pathogenic fungi and oomycetes (such as Pyricularia oryzae, Colletotrichum gloeosporioides, Gibberella, Phytophthora, Phytophthora capsici), which can be used for preventing and treating plant diseases caused by fungi and / or oomycetes.

The application belongs to the field of agricultural fungicide compound, discloses a composition containing new white folium altheae alkaloid derivative Z-24 and anthraquinone components (emodin, emodin methyl ether, chrysophanol, aloe emodin) in rhubarb and mixed concentration thereof. The application of the composition in preventing and treating plant diseases caused by rhizoctonia solani, sclerotinia sclerotiorum, fusarium graminearum, botrytis cinerea, pyricularia oryzae and phytophthora capsici is disclosed, and the mass percentage of new white folium altheae alkaloid derivative Z-24 and anthraquinone components is 1:500, 1:100, 1:50 or 1:25. The fungicidal composition disclosed in the application has the advantages of wide fungicidal spectrum, low toxicity, effective delay of drug resistance of plant pathogens and the like, and has the value of further research and development.

The invention belongs to the technical field of pesticides, and relates to 11 bactericide compositions for mainly preventing and treating crop diseases caused by pyricularia oryzae and colletotrichum gloeosporioides. The compound YJY-22 provided by the invention is novel in structure and unique in action mode, and has no cross resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole, azoxystrobin, mancozeb, captan, difenoconazole, prochloraz, chlorothalonil and tebuconazole. As the action mechanism of the compound YJY-22 is different from that of the medicament, and the compound YJY-22 and the medicament have no cross resistance, the compound YJY-22 and the medicament are compounded, so that the sterilization range can be expanded, the sterilization effect can be enhanced, the drug resistance of phytopathogen can be delayed, the safety to crops is good, the prevention and control spectrum is expanded, and the requirements of pesticide reduction and synergism are met.

11 fungicide compositions mainly used for controlling crop diseases caused by Pyricularia oryzae and Colletotrichum spp.. Compound YJY-22 has a novel structure and a unique mode of action, and exhibits no cross-resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole, azoxystrobin, mancozeb, captan, difenoconazole, prochloraz, chlorothalonil, or tebuconazole. Because compound YJY-22 and the described agents have different mechanisms of action and have no cross-resistance, combining compound YJY-22 and the described agents not only can broaden the antifungal spectrum and enhance antifungal efficacy, but also can delay fungicide resistance of plant pathogens, ensure high crop safety, expand the control spectrum, and meet the requirement of pesticide reduction with increased efficiency.

The application provides a pyroglutamic acid transaminase mutant and application thereof, the mutant is obtained by mutation on the basis of wild-type pyroglutamic acid transaminase, and specific mutation includes at least one of the following sites: (1) the 13th isoleucine is mutated into arginine; (2) the 35th valine is mutated into arginine; (3) the 183rd asparagine is mutated into aspartic acid; and the mutant is suitable for industrial enzymatic production of L-aspartic acid and the process of amino acids taking L-aspartic acid as a precursor; especially, the I13R / V35R / N183D mutant obtained by modification has high positive catalytic activity and strict direction selectivity, and completely loses the reverse reaction activity of decomposing L-aspartic acid; the mutant is overexpressed with phosphoenolpyruvate carboxylase in L-threonine production strain THRS-6, and a high-efficiency L-threonine synthesis metabolic pathway is constructed, and the yield of L-threonine is significantly improved when glucose is used as a substrate.

This invention belongs to the field of bioengineering technology, specifically relating to a soluble powder of rice blast fungus immune protein and its preparation method. The powder mainly consists of rice blast fungus immune protein and specific carrier filler adjuvants. Through optimized formulation and processing technology, the problems of easy inactivation and difficult storage of protein-based active ingredients during industrialization are effectively solved, ultimately obtaining a soluble powder product with rapid dissolution, high suspension rate, and good stability. Field trials show that this formulation can efficiently activate the plant immune system, significantly control rice blast and sheath blight while reducing the amount of chemical pesticides used, and promote crop growth, resulting in increased yield and income.

The application discloses a benzisothiazole carboxamide compound and application thereof. The benzisothiazole carboxamide compound has the characteristics of high specificity and high activity as an inhibitor of myosin motor domain, and can significantly inhibit the growth and development process and pathogenicity of pathogenic fungi, especially Pyricularia oryzae.

The application discloses application of a broad-spectrum antibacterial biocontrol Cytospora fungus F-XTBG8 in preparation of antifungal active substances. Chaetomella raphigera The application of the broad-spectrum antibacterial biocontrol Cytospora fungus (F-XTBG8) is applied in preparation of antifungal active substances. The strain has obvious antagonism to more than 100 environmental fungi and plant pathogenic fungi including Pyricularia oryzae (Monascus oryzae), Mycosphaerella fijiensis (Mycosphaerella fijiensis), Alternaria tenuissima (Alternaria tenuissima), Fusarium graminearum (Fusarium graminearum), Fusarium oxysporum (Fusarium oxysporum) and Fusarium verticillioides (Fusarium verticillioides), and fermentation liquor of the strain can significantly reduce occurrence of corn large spot, tobacco black spot and sclerotinia rot. Magnaporthe oryzae Setosphaeria turcica Alternaria tenuissima Fusarium graminearum Fusarium oxysporum Fusarium concentricum The application provides an excellent biocontrol strain for development and research of microbial source pesticides and provides a new idea for green prevention and control of plant diseases.​​​​​

The application provides a Beauveria bassiana strain Bb-YY for preventing and controlling various diseases and pests, a derivative product and application thereof, and belongs to the technical field of functional microorganisms. Beauveria bassiana The strain Bb-YY is screened from the rhizosphere soil of a peanut healthy plant planted in a serious continuous cropping obstacle plot, and is identified as Beauveria bassiana (Bb) by molecular identification, has high efficient prevention and control effects on white grubs, peanut fruit rot pathogens and peanut root rot pathogens, and has certain inhibition effects on Bacterospora coriacea causing tobacco black foot disease and Pyricularia oryzae causing rice blast. It can be seen that the Bb-YY strain can also play a prevention and control effect on tobacco, rice and other crops in addition to peanut planting, and can effectively reduce the use of chemical pesticides, and provides a strong support for green prevention and control of peanut diseases and pests.

The application provides application of usnic acid or sodium usnate in inhibition of false smut fungus and pyricularia oryzae, and belongs to the technical field of pesticides. The natural product usnic acid and its sodium salt have inhibitory effects on plant pathogenic fungi, such as fusarium graminearum, false smut fungus, pyricularia oryzae and fusarium graminearum, and can significantly reduce the content of DON toxin of fusarium graminearum, and also has good inhibitory activity on wheat scab fungus in indoor and field, thereby providing an important foundation for discovery and creation of new natural product pesticides.

The present application relates to the field of plant protection and biological control, and particularly relates to a fungal elicitor STOM and its application in inducing plant immunity and disease resistance. The present application provides a pyricularia oryzae elicitor protein STOM and its coding gene, wherein the elicitor protein is an amino acid as shown in SEQ ID NO: 2, and the coding gene STOM is a nucleotide molecule as shown in SEQ ID NO: 1; and the present application also provides the pyricularia oryzae elicitor STOM and its application in inducing plant immunity and disease resistance. The present application proves through experiments that the elicitor protein can significantly activate plant defense response, such as active oxygen burst, defense gene expression and MAPK activation; and can improve the disease resistance of nicotiana benthamiana to botrytis cinerea, sclerotinia sclerotiorum and other diseases, resist pathogenic bacteria infection, and effectively prevent or reduce the occurrence of diseases. The elicitor protein provided by the present application provides new material resources for the research and development of protein pesticides / plant immunity elicitors, provides materials and theoretical guidance for the compounding of biological pesticides, and has a wide application prospect in agricultural production.