14 results about "Plant nematode" patented technology

The application discloses application of 3-(4-fluorophenyl) prop-2-yne carbonitrile in prevention and treatment of plant root knot nematodes and belongs to the technical field of plant root knot nematode prevention and treatment. 50 It is found for the first time that 3-(4-fluorophenyl) prop-2-yne carbonitrile has significant insecticidal activity on southern root knot nematodes, the LC 3.109 μg / mL of 3-(4-fluorophenyl) prop-2-yne carbonitrile on southern root knot nematodes is 72 h, the average mortality reaches 92.5% when the application concentration is 48 μg / mL, and the 3-(4-fluorophenyl) prop-2-yne carbonitrile can be used as a novel and effective drug for plant root knot nematode prevention and treatment.

The invention discloses application of 3-(4-fluorophenyl) propan-2-acetylene nitrile to prevention and treatment of plant root-knot nematodes, and belongs to the technical field of prevention and treatment of plant root-knot nematodes. It is found for the first time that 3-(4-fluorophenyl) propan-2-alkyne nitrile has remarkable insecticidal activity on meloidogyne incognita, LC50 of 3-(4-fluorophenyl) propan-2-alkyne nitrile on meloidogyne incognita is 3.109 micrograms / mL in 72 h, the average death rate reaches 92.5% when the application concentration is 48 micrograms / mL, and 3-(4-fluorophenyl) propan-2-alkyne nitrile can serve as a brand new and effective drug choice for preventing and treating plant meloidogyne.

The application discloses application of bacillus velezensis LH-BLS107 (CGMCC No. 34785) or an engineering bacterium modified through natural, artificial mutagenesis or gene editing in biological control of plant nematode diseases. Fermentation culture solution, bacterium powder and / or secondary metabolites of the LH-BLS107 or the engineering bacterium thereof are used in wheat, soybean, rice, fruit trees, vegetables and the like. The fermentation culture solution, the bacterium powder and / or the secondary metabolites can effectively prevent and control wheat cyst nematode disease, soybean cyst nematode disease, rice paratylenchus pseudohollandei disease, fruit tree and vegetable root knot nematode disease, and the mortality of the above-mentioned nematodes can reach more than 95%, and when the fermentation culture solution, the bacterium powder and / or the secondary metabolites are compounded with chemical nematocide, the chemical agent dosage can be reduced by 25%-30%.

A method of treating and / or preventing a disease in plants, including a step of administering a composition comprising phenoxyethanol to a plant is disclosed. In addition, a method of treating and / or preventing a nematodal infestation in plants, comprising a step of administering a composition comprising phenoxyethanol to a plant is disclosed. Compositions comprising phenoxyethanol used in such methods are also disclosed.

The application belongs to the field of plant protection, and specifically provides application of a thiazole compound in preparation of a medicine for preventing and treating plant nematode diseases. The thiazole compound includes 5-(chloromethyl)-3-(2,4-dichlorothiazol-5-yl)-1,2,4-oxadiazole, 5-(bromomethyl)-3-(2,4-dichlorothiazol-5-yl)-1,2,4-oxadiazole and the like. Through nematode-killing activity tests on Bursaphelenchus xylophilus, Meloidogyne incognita and Aphelenchoides besseyi, it is found that the compounds have good and broad-spectrum nematode-killing activity.

The application provides application of linear dipeptide Ala-Leu in prevention and treatment of nematodes. The linear dipeptide Ala-Leu from plants has the activity of killing various nematodes, including common root knot nematodes, pine nematodes and other plant nematodes and free-living nematodes such as Caenorhabditis elegans, and can obviously kill insects at a low dose; potting experiments prove that the linear dipeptide can prevent and treat plant diseases caused by nematodes. Moreover, the linear dipeptide Ala-Leu has the advantages of small molecular weight, simple structure, low cost, good heat resistance and stability, and is easy to be degraded in animal cells, is safe for humans and other animals, has no activity of inhibiting the growth of bacteria and fungi, is safe for non-target organisms, does not affect the soil bacterial community structure, and has high application value in development of an environmentally-friendly, safe and efficient new type of nematocide and a new type of agent for preventing and treating plant nematode diseases.

The application discloses application of 2-chloro-N(4-chlorophenyl)acetamide to prevention and treatment of plant root-knot nematodes and belongs to the technical field of prevention and treatment of plant root-knot nematodes.The chlorophenylamide compound is 2-chloro-N(4-chlorophenyl)acetamide and / or a pharmaceutically acceptable salt thereof.It is found for the first time that the cyclic amide 2-chloro-N(4-chlorophenyl)acetamide has significant killing activity on southern root-knot nematodes, the half lethal concentration LC 50 of 24h is 2.31 μg / mL, and the half lethal concentration LC 50 of 48h is 2.17 μg / mL, has the characteristics of good specificity, high efficiency, low toxicity, is environment-friendly, and meets the needs of green plant protection and sustainable agricultural production and development.

The invention discloses application of 2-chloro-N (4-chlorphenyl) acetamide to prevention and treatment of plant root-knot nematodes, and belongs to the technical field of prevention and treatment of plant root-knot nematodes, and chlorobenzamide compounds are 2-chloro-N (4-chlorphenyl) acetamide and / or pharmaceutically acceptable salts of the 2-chloro-N (4-chlorphenyl) acetamide. It is found for the first time that cyclic amide compound 2-chloro-N (4-chlorphenyl) acetamide has remarkable killing activity on meloidogyne incognita, the median lethal concentration LC50 in 24 h is 2.31 mu g / mL, the median lethal concentration LC50 in 48 h is 2.17 mu g / mL, and the cyclic amide compound 2-chloro-N (4-chlorphenyl) acetamide has the advantages of being good in specificity, efficient and low in toxicity, is environmentally friendly and meets the requirements for green plant protection and sustainable agricultural production and development.

The invention relates to application of 1-octylene-3-ketone in prevention and treatment of plant nematodes, and belongs to the field of plant disease and insect pest prevention and treatment. 1-octylene-3-ketone with different concentrations is used for contact-killing or fumigating various nematodes such as northern root-knot nematodes, elephant bean root-knot nematodes, grape root-knot nematodes, bursaphelenchus xylophilus, bursaphelenchus xylophilus and panoda resurrection nematodes; the bactericidal composition has strong toxic activity, can be used for effective prevention and control of plant nematode diseases, and provides a new medicament for prevention and control of plant nematode diseases.

The invention discloses 24 plant nematode pedigree specific genes in ditylenchus destructor and application of dsRNA of the 24 plant nematode pedigree specific genes in nematode prevention and control, and belongs to the technical field of gene engineering. CDS nucleotide sequences of the 24 specific genes of the plant nematode lineage are as shown in SEQ ID NO: 1-24, and nucleotide sequences of positive-sense strands of dsRNA of the 24 specific genes of the plant nematode lineage are as shown in SEQ ID NO: 25-48. The parasitic ability of the nematodes to hosts after dsRNA treatment is determined through an in-vitro interference method, the expression levels of the 24 plant nematode pedigree specific genes are all remarkably reduced after the 24 plant nematode pedigree specific genes are treated by respective corresponding dsRNA fragments, and the planting ability and the infection area of the ditylenchus destructor are reduced by 20-59% and 22-72% respectively after the 24 plant nematode pedigree specific genes are inoculated into sweet potatoes for 25 days; results show that the specific genes of the 24 plant nematode pedigree participate in regulation and control of infection and reproduction of nematodes on hosts, and can be used as target genes for development of plant nematode prevention and control drugs.

The application belongs to the technical field of biology and specifically relates to a clavate branch of Clonostachys rosea and application thereof in preparation of a medicine for preventing and treating a plant pathogenic nematode, wherein the clavate branch of Clonostachys rosea has a preservation number of CCTCC NO: M20211658. The clavate branch of Clonostachys rosea provided by the application can prevent and treat plant nematode diseases efficiently and promote the growth of plant root height. Meanwhile, the fermentation technology of the clavate branch of Clonostachys rosea is optimized, and a fermentation medium with the highest activity of metabolic products is screened. In addition, the fermentation technology is simple, and the production equipment investment and production cost are greatly reduced. The preparation for preventing and treating nematode diseases provided by the application is a biological preparation, which is safe to use and does not cause drug damage and secondary pollution.

The application discloses a biological microcapsule preparation and a preparation and application thereof, and aims to solve the technical problems of a short shelf life, a great influence of external environmental factors, poor stability and the like of an existing biocontrol preparation. The biological microcapsule preparation is prepared by embedding a pink Clonostachys rosea strain CGMCC No. 16262, spores or / and metabolites thereof with a embedding agent sodium alginate, a filler and an auxiliary agent algal oligosaccharide. The filler is at least one of soluble starch and bentonite. The biological microcapsule preparation has a long shelf life, and can significantly improve the acid and alkali resistance, salt resistance, ultraviolet resistance and high-temperature resistance of the pink Clonostachys rosea strain, and the effects of the biological microcapsule preparation in plant nematode disease prevention and yield increase promotion are significantly higher than those of other dosage forms. In addition, the microcapsule single-dose treatment or the microcapsule reduced-dose compound treatment with trifopyrifenam can significantly improve the control effect on root-knot nematode disease, achieves the purpose of pesticide reduction and efficiency increase, and has a good application prospect.

This invention relates to the application of 1-octen-3-one in the control of plant nematodes, belonging to the field of plant pest and disease control. This invention uses different concentrations of 1-octen-3-one to kill or fumigate various nematodes, including Northern Root-Knot Nematode, Elephant Root-Knot Nematode, Grape Root-Knot Nematode, Luoding Sporangia Nematode, Pine Wood Nematode, and Whole Tooth Resurrection Nematode, all of which have strong toxic activity and can be used for the effective control of plant nematode diseases, providing a new agent for the control of plant nematode diseases.

A method of treating and / or preventing a disease in plants, including a step of administering a composition comprising phenoxyethanol to a plant is disclosed. In addition, a method of treating and / or preventing a nematodal infestation in plants, comprising a step of administering a composition comprising phenoxyethanol to a plant is disclosed. Compositions comprising phenoxyethanol used in such methods are also disclosed.