253 results about "Oomycete" patented technology

A combination of plant essential oils in an aqueous solution containing vinegar provided a pesticidal effect against a range of pests, including fungi, bacteria, oomycetes, insects such as mosquitoes and bedbugs, and nematodes, and uses thereof.

The present invention relates to a plant, which is resistant to a pathogen of viral, bacterial, fungal or oomycete origin, wherein the plant has an increased homoserine level as compared to a plant that is not resistant to the said pathogen, in particular organisms of the phylum Oomycota. The invention further relates to a method for obtaining a plant, which is resistant to a pathogen of viral, bacterial, fungal or oomycete origin, comprising increasing the endogenous homoserine level in the plant.

Methods for reducing pests (e.g., nematodes, oomycetes, fungi, viruses) in an object or area by applying to the object or area a pest reducing effective amount of a composition containing hydrogen peroxide, orange terpene oil, orange valencia oil, at least one non-ionic emulsifier, distilled water or deionized water, and optionally hydrogen peroxide. Methods for treating gastrointestinal nematode infection in ruminant animals by administering to a ruminant animal in need of such treatment a therapeutically effective amount of a composition containing orange terpene oil, orange valencia oil, at least one non-ionic emulsifier, distilled water or deionized water, and optionally hydrogen peroxide.

The invention relates to a bactericidal composition, the active ingredients are cyazofamid (A) and one of metalaxyl, metalaxyl-M, oxadixyl, benalaxyl, furalaxyl, cymoxanil or propamocarb (B), and the weight ratio of A to B is 50:1-1:50. The complex of A and B realizes the obvious synergistic effect, and the bactericidal composition is used for the disease control of the crops of fruit trees, flowers, cotton, wheat, rice, rapeseed, vegetables and the like, especially the diseases of oomycetes.

The invention discloses effector protein Avh87 derived from phytophthora cinnamomi, and a coding gene and application thereof. The protein has the amino acid sequence of SEQ ID No. 1 in the sequence table. The nucleotide sequence expressing the protein is represented by SEQ ID No. 2 in the sequence table. Experiments show that the gene can inhibit plant cell hypersensitive reactions induced by apoptotic precursor protein Bax, or inhibit plant cell death induced by pathogenic phytophthora elicitors INF1. The effector protein Avh87 is of great significance in enriching molecular mechanism information of the interaction between the phytopathogenic oomycetes and hosts, and in establishing a comprehensive prevention and control technology strategy for phytopathogenic oomycete diseases.

The invention relates to an antagonist bacterium which can overcome or eliminate a hot pepper epidemic disease and produced microbial organic fertilizer thereof, belonging to an intensive agriculture production technology. By the invention, an antagonist bacterium (Bacillus pumilus NJLZ-8) which has an obvious antagonist function on pathogenic oomycetes of the hot pepper continuous cropping epidemic disease is separated; the antagonist bacterium is mixed with organic fertilizer to prepare microbial organic fertilizer; and the fertilizer contains more than 1*108 antagonist microorganisms per gram, 4-5 percent of total nitrogen ( more than 90 percent of organic nitrogen), 6-10 percent of total nitrogen-phosphorus-potassium nutrients and 30-35 percent of organic matter. Proved by tests, the microbial organic fertilizer can rapidly breed antagonist bacteria after being applied into soil, form a preponderant group in the soil and has more than 80 percent of biological preventing and treating rate on the hot pepper epidemic disease in the soil with serious hot pepper epidemic disease. The generation of the hot pepper epidemic disease can be prevented to a large extent by applying the microbial organic fertilizer on the soil without forming continuous cropping obstacles for a long time.

This present disclosure is related to the field of 1-(substituted-benzoyl)-5-fluoro-4-imino-3-methyl-3,4-dihydropyrimidin-2(1H)-ones and their derivatives and to the use of these compounds as fungicides. Fungicides are compounds, of natural or synthetic origin, which act to protect and/or cure plants against damage caused by agriculturally relevant fungi. Generally, no single fungicide is useful in all situations. Consequently, research is ongoing to produce fungicides that may have better performance, are easier to use, and cost less. The present disclosure relates to 1-(substituted-benzoyl)-5-fluoro-4-imino-3-methyl-3,4-dihydropyrimidin-2(1H)-one compounds and their use as fungicides. The compounds of the present disclosure may offer protection against fungi and fungi like organisms including ascomycetes, basidiomycetes, deuteromycetes, and oomycetes.

The invention discloses bacillus velezensis and application thereof. The strain is preserved China General Microbiological Culture Collection Center of China Committee for Culture Collection of Microorganisms on 07 December, 2020, has a preservation number of CGMCC No. 21318 and has a preservation number of Bacillus velezensis TYGF10-2F9. By applying the strain to the field of agricultural biocontrol, a biomembrane can be formed and is stably colonized at rhizosphere of plants, can generate a relatively high and broad-spectrum inhibiting action on 12 kinds of plant pathogenic fungi and oomycetes, and substances such as IAA and siderophore can be generated to promote plant growth. Fermentation liquor of the bacillus velezensis has the prevention efficiency of 80.99% to sclerotinia rot of rape pot culture; and a suspension or fermentation liquor of the bacillus velezensis has the prevention efficiency of 66.67% to cucumber wither pot culture, the strain plays a certain role in promoting growth of cucumbers, is a biological control strain with excellent performance and has a good development application prospect.

The invention discloses a compound synergistic bactericidal composition, the effective ingredients of which are zoxamide (A) and (B) which is one active ingredients of cyazofamid, cymoxanil, propamocarb and thiram, wherein the mass ratio of the effective ingredients A to B is 50:1-1:50. The effective ingredients A and B have obvious synergized action after being compounded in a certain proportionrange, and are mainly used for preventing and treating oomycete diseases.

The invention discloses new applications of melatonin in inhibition of plant oomycetes diseases, and also discloses a bactericide containing melatonin. The invention discloses for the first time that the melatonin can effectively prevent plant oomycetes diseases, thus providing a new concept for the prevention of oomycetes diseases; melatonin plus fluopicolide or melatonin plus ethylicin combination plays a synergistic effect, the combination use can greatly enhance the pesticide effect, reduce the usage amount of pesticide, and is beneficial to green control and to realize the sustainable development of agricultural ecological civilization.

The invention provides a flavonoid with agricultural bacteriostatic activity and belongs to the technical field of pesticides. The compound has the following structural formula. The International Union of Pure and Applied Chemistry (IUPAC) chemical name of the compound is E-3-(3-(3,7-dimethyl-2,6-dialkylene)-4-hydroxyphenyl)-5,7-dihydroxyl-4H-benzopyran-4-ketone. The compound has high inhabitation effect on oomycetes selectively and can be processed into a pesticide preparation for preventing and controlling oomycete diseases.

The invention discloses an effector protein derived from phytophthora capsici as well as a coding gene and application thereof. The protein disclosed by the invention is (a) or (b) or (c): (a) protein consisting of amino acid sequences represented in the 19th-476th sites of a sequence 1 of a sequence list; (b) protein consisting of an amino acid sequence represented in the sequence 1 of the sequence list; and (c) protein obtained by substituting and/or deleting and/or adding the amino acid sequence of the protein defined by (a) or (b) through one or more amino acid residues and having an effector function. Experiments prove that the protein disclosed by the invention effectively participates in a process that phytophthora capsici infects a pepper host and has a function of inducing plant tissue cell death and even an obvious necrotic symptom on an infected part. The effector protein disclosed by the invention is significant for enriching molecular mechanism information of plant pathogenic oomycetes and host interaction and for establishing an oomycetes disease integrated control technological strategy.

The present invention relates to dsRNA molecules for inhibiting the expression of CYP51 gene(s) from a fungal or oomycete phytopathogen and the use of such inhibitory dsRNA molecules for controlling phytopathogenic fungi and/or oomycetes. The present invention further relates to DNA sequences providing a transcriptional template for inhibitory dsRNA molecules or antisense RNA; and phytopathogen-tolerant transgenic plants with such DNA sequences.

The invention relates to a bactericidal composition, the active ingredients are cyazofamid (A) and a protective fungicide (B), the weight ratio of A to B is 30:1-1:80; and the protective fungicide B which can be used for the composition comprises chlorothalonil, thiram, ziram, mancozeb, zineb, propineb, amobam and metiram. The composition has obvious synergistic effect and can be used for the disease control of the crops of fruit trees, flowers, cotton, wheat, rice, rapeseed, vegetables and the like, especially the diseases of oomycetes.

The invention discloses a germicide composition. The germicide composition comprises a synergic effective dose of cyprodinil and one of cyazofamid, cymoxanil, metalaxyl and hymexazol, wherein the weight part ratio of two active ingredients in the germicide composition is 40-1:1-40. The germicide composition at least comprises one surfactant which contributes to dispersing the active ingredients in water during application. The germicide composition has protection activity, treatment activity and eradicating activity, can be used for various crops and has extremely high bioactivity on oomycetes fungi such as phytophthora capsici, peronospora parasitica, pseudoperonospora parasitica, pythium and plasmodiophoromycetes plasmodiophora brassicae woron.

A disinfactant 'Wanlongmycin', C53H67N13O13S2 molecular weight 1157 is disclosed, which can be used to prevent the eliminate the bacterial and oomycetes' disease, such as rice streak disease, hoja blanca, frosty mildew, etc.

The invention relates to a pesticide, in particular to a compound bactericide for preventing and treating vegetable oomycetes diseases and a preparation thereof. The compound bactericide for preventing and treating the vegetable oomycetes diseases contains active ingredients, packing and/or auxiliaries, wherein the active ingredients contain carboxylic acid amide bactericide and methoxyl crylic acid ester bactericide with the weight proportion of 1 to 100:1 to 100. The preparation of the compound bactericide comprises wettable powder and water dispersed granule. The compound bactericide for preventing and treating the vegetable oomycetes diseases and the preparation thereof simultaneously have the advantages of good quick action property and effect lasting property, multiple action points of drugs, wide disease prevention spectrum and high biological safety, and can effectively delay the occurrence and the growth of the drug resistance of oomycetes. The compound preparation has the advantages of simple preparation process, low cost and obvious economic benefit.

The subject invention provides materials and methods for the control of pests, including fungi, oomycetes, nematodes, and weeds, of numerous crops, plants and forests. Advantageously, pests in the soil can be controlled without phytotoxicity. In certain embodiments, the subject invention provides new pesticidal compositions. In preferred embodiments, these compositions comprise an active ingredient component that is formic acid and/or acetic acid, and/or salts thereof. The composition further comprises a second acidic component that enhances the pesticidal activity of the first active ingredient component.

The invention relates to a notoginseng soil treatment agent and a use method thereof. The notoginseng soil treatment agent contains 50% of carbendazol wettable powder, 95% of hymexazol wettable powder, 25% of metalaxyl, propamocarb wettable powder and 72% of agricultural use streptomycin wettable powder. The soil treatment agent has good effects to prevent major fungus diseases caused by ascomycetes, deuteromycetes, oomycetes in fungus and diseases caused by pseudomonas and xanthomonas bacteria; soil treatment is carried out on soil which is used for continuously planting for four years with the soil treatment agent 20 days before notoginseng transplanting and a notoginseng seed dressing. Rate of emergence of a field trial is 87.22% which is 63.63% higher than that of a comparison without using the soil treatment agent of 23.59 percent. The soil treatment agent has low toxicity to human and livestock and less vestigital, and not only can be used for preventing and treating bad rot, stump rot, bud-rot and diseases of the notoginseng, but also can be used for treating the soil of various crops of other traditional Chinese medical materials and vegetables.

The invention relates to a bactericidal composition containing cyazofamid, which comprises a decomposition-resisting factor and a component C, wherein a mass ratio of a component A, namely the cyazofamid to the decomposition-resisting factor to the component C is (3-50):(0.1-5):(3-60). The bactericidal composition is compounded by multiple active components, a matching ratio of the active components is adjusted, and a stabilizing agent is added, so that the compounded bactericidal composition has a more excellent control effect on an oomycetes disease; action mechanisms of the active components in the bactericidal composition are different, so that pesticide toxicity resistance generation can be avoided, and a generation speed of disease pesticide resistance can be postponed; the bactericidal composition can prevent and expand a bactericidal spectrum, can greatly reduce the pesticide consumption and the use cost, is safer to crops, and can reduce environmental pollution.

The invention relates to pesticides, in particular to composite bactericide for controlling fruit and vegetable oomycetes diseases. The composite bactericide consists of active elements, fillers and/or auxiliary agents, which is characterized in that the active elements consist of carboxylic acid amide bactericides and metiram, the weight ratio of the carboxylic acid amide bactericides to the metiram is (1-10):(10-100). The product form of the composite bactericide for controlling the fruit and vegetable oomycetes disease can be wettable powder or water dispersible granules. The composite bactericide for controlling the fruit and vegetable oomycetes diseases is suitable for controlling various oomycetes diseases of the fruits and vegetables, in particular controlling the potato late blight, the cucumber downy mildew, the grape downy mildew, the tomato late blight, the capsicum blight and the Chinese cabbage downy mildew; the composite bactericide has remarkable synergism and more action mechanisms and sites, and can effectively delay the generation and spread of oomycetes pesticide resistance; in addition, the invention has the advantages of wide disease controlling spectrum, high biologic safety, simple preparation method, low cost and remarkable economic benefit.