9 results about "Mycosphaerella" patented technology

The present application relates to the field of microorganism, specifically to three strains of Acrocalymma sp. symbiotic bacteria E00677, E01299A and E01299B and their use for tomato growth. The strains of the present application can promote tomato growth, improve tomato leaf quality, and enhance the antioxidant and stress resistance of tomato.

The present invention relates to a method for controlling or preventing infestation of plants by the phytopathogenic microorganism Corynespora cassiicola, the method comprises applying a fungicidally effective amount of a compound as defined in claim 1, an N-oxide or an agriculturally acceptable salt thereof to a plant pathogen, a locus of the plant pathogen, or a plant susceptible to attack by the plant pathogen, or propagation material thereof.

The invention provides a preparation method and application of methyl 2-hydroxyphenylacetate. The methyl 2-hydroxyphenylacetate is separated from a fermentation culture of streptomyces wetland 13-3 with the preservation number of CGMCC (China General Microbiological Culture Collection Center) No. 22830. According to the method, the compound methyl 2-hydroxyphenylacetate is obtained from streptomycete for the first time, verification proves that the methyl 2-hydroxyphenylacetate has broad-spectrum antibacterial activity on various plant pathogenic fungi, particularly, the inhibitory activity on aspergillus fumigatus, colletotrichum truncatum, rhizoctonia solani, verruca verrucosa and magnaporthe oryzae is higher than that of amphotericin B, and the methyl 2-hydroxyphenylacetate can be used for preparing antibacterial agent drugs and has broad-spectrum antibacterial activity. A novel natural antibacterial compound is provided for the fields of agriculture and medicine, and the method is simple and convenient to operate, high in purification efficiency and environment-friendly.

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 discloses a benzopentaheterocyclic compound containing a hydrazine structure and an application thereof. The compound, stereoisomers of the compound, or a salt of the compound, or a solvate of the compound has good inhibiting effects on plant pathogenic bacteria and fungi. The compound has good inhibiting effects on fungi such as Colletotrichum gloeosporioides, Colletotrichum theae-sinensis, Mycosphaerella pachyrrhizi, Alternaria solani, Phytophthora capsici and the like, and pathogenic bacteria such as Xanthomonas oryzae, Xanthomonas citri and the like. Some of the compounds show excellent inhibiting activities on Colletotrichum theae-sinensis, with an EC 50 of 11.85 μg / mL. Some of the compounds show excellent inhibiting activities on Mycosphaerella pachyrrhizi, with an EC 50 of 2.88-16.41 μg / mL. Some of the compounds show excellent inhibiting activities on Xanthomonas citri, with a primary screening activity of 13.69-27.03 μg / mL, which is superior to a commercial drug, copper oxychloride. Some of the compounds show excellent inhibiting activities on Xanthomonas campestris, with a primary screening activity of 25.07-43.78 μg / mL, which is superior to the commercial drug, copper oxychloride. The application provides an important scientific basis for the research and development of new pesticides.

The invention provides specific primers and a rapid detection method used for detecting or identifying solanum tuberosum and application of the solanum tuberosum, the primer pair is PCTF1 / PCTR1, the nucleotide sequence of an upstream primer PCTF1 is shown as SEQ ID No: 1, and the nucleotide sequence of a downstream primer PCTR1 is shown as SEQ ID No: 2. The target sequence detected by the primer disclosed by the invention is a translation elongation factor (TEF) gene, the gene expression regulation is very conservative, and the gene sequence has high evolution conservative property and can be used as a DNA bar code of a point between species. The specific primer provided by the invention has the advantages of being good in specificity, high in sensitivity, economical, short in time consumption and the like when being used for detecting the brachycladium cucumerinum, and can play an important role in early diagnosis of the angelica sinensis root rot disease caused by Plectosphaerella cinerina.

The present invention relates to a method for controlling or preventing infestation of plants by the phytopathogenic microorganism Corynespora cassiicola, the method comprises applying a fungicidally effective amount of a compound as defined in claim 1, an N-oxide or an agriculturally acceptable salt thereof to a plant pathogen, a locus of the plant pathogen, or a plant susceptible to attack by the plant pathogen, or propagation material thereof.

The invention provides plectosphaerella cucumerina and application of the plectosphaerella cucumerina in identification of root rot of angelica sinensis, the taxonomic name of the plectosphaerella cucumerina is plectosphaerella cucumerina, the strain number of the plectosphaerella cucumerina is DTYP001, and the preservation number of the plectosphaerella cucumerina is CGMCC No. 42271. The invention further provides a preparation method of the plectosphaerella cucumerina. According to the application disclosed by the invention, a strain of fungus, namely, plectosphaerella cucumerina, is separated from the root of angelica sinensis, and the plectosphaerella cucumerina is identified as plectosphaerella cucumerina through combination of morphology and molecular biology. A pathogenic bacterium tieback experiment, namely the Koch's law, verifies the attribute that the brachythecium cucumerinum DTYP001 is the angelica sinensis root rot pathogenic bacterium (brachythecium cucumerinum); the strain (fusarium solani DTYP001) is used as a reference substance to be applied to angelica root rot disease identification, a key technical scheme is finally provided for solving the problems that angelica root rot pathogenic bacteria cannot be clearly identified, diagnosis methods are deficient, and prevention and treatment are lack of basic support, the research blank in the field is filled, and the application prospect is wide. A core foundation is laid for scientific diagnosis and effective prevention and treatment of the angelica sinensis root rot.

The application belongs to the technical field of microorganisms, and particularly relates to grape endophytic fungus NZ1-b-1 and application thereof in prevention and treatment of grape diseases. The classification and naming of the grape endophytic fungus NZ1-b-1 is endophytic fungus of the genus Diaconescus, which is preserved in the China Center for Type Culture Collection on July 14, 2025, and the preservation number is CCTCC NO: M 20251604. The grape endophytic fungus NZ1-b-1 provided by the application is an endophytic fungus isolated from grape leaves, and has simple culture method, low cost and easy operation. The grape endophytic fungus NZ1-b-1 has an inhibitory effect on grape Botrytis cinerea and Mycosphaerella leaf-fall, has high prevention and treatment effects on grape Botrytis blight and Mycosphaerella leaf-fall, has certain prevention and treatment effects on grape downy mildew, and has the potential to be developed into a broad-spectrum antibacterial agent for grape fungal diseases.