7 results about "Bipolaris maydis" patented technology

The present application relates to the application of allantoin in the prevention and treatment of fungal diseases of grain crops. The present application finds that allantoin can inhibit the growth of pathogenic fungi of grain crops, especially inhibit the infection of pathogenic fungi of grain crops to host cells or inhibit the expansion of pathogenic fungi of grain crops in host cells, thus indicating that allantoin can be used as a pesticide to prevent and treat pathogenic fungi of grain crops, especially Magnaporthe oryzae, Cochliobolus miyabeanus and Ustilaginoidea virens.

This invention belongs to the field of biological control technology for plant diseases and pests, and provides a strain of Chaetomium globosum ( Chaetomium globosum EF-14 and its applications. This strain is deposited at the China General Microbiological Culture Collection Center (CGMCC), with accession number CGMCC No. 40618. The *Chaetomium globosum* EF-14 provided by this invention is an endophytic fungus of maize that can simultaneously inhibit *Fusarium graminearum* (…). Fusarium gramineae ) and Corn spores ( Bipolaris maydis It can effectively reduce corn stalk rot and corn leaf spot caused by fall armyworm ( ) and can also effectively reduce the incidence of fall armyworm ( ). Spodoptera frugiperda This invention provides a highly efficient and safe microbial resource for the green control of major corn diseases and pests, and broadens the application scope of Chaetomium globosum in agricultural biocontrol, achieving synergistic control of diseases and pests through "one fungus targeting multiple targets".

The invention relates to the technical field of culture devices, and discloses a bipolaris maydis culture and observation device which comprises a culture box, a box door arranged on the culture box, an observation window arranged on the box door and a display panel arranged on the side wall of the culture box. A groove is formed in the middle of the placement frame, and a mounting seat is arranged in the culture cavity; through cooperative arrangement of the driving system, the mounting base and the macro camera in the culture cavity, the function of observing the growth condition of the bipolaris maydis in the culture dish without opening the box door is achieved, and the driving system can drive the mounting base to accurately move in the X direction, the Y direction and the Z direction; the microspur camera can move to the position over any target culture dish, shot images are displayed in real time through the display panel, and the problem that in a traditional observation mode, due to the fact that a box door is opened, external unfiltered and disinfected air enters a culture cavity is effectively solved.

The application belongs to the field of antibacterial activity research, and discloses a preparation method of guaiane sesquiterpenes and application thereof in resisting plant pathogenic fungi. Firstly, leaf blades of Artemisia stolonifera are dried, extracted, concentrated, and then a crude fraction is obtained through extraction, and then the crude fraction is further purified through normal silica gel, dextran gel and reversed-phase macroporous resin column chromatography, and finally three guaiane sesquiterpenes are obtained through liquid phase preparation. The compounds can effectively inhibit the growth of Sclerotinia sclerotiorum, Cochliobolus sativus and Verticillium dahliae, and the minimum inhibitory concentration (MIC) of moxartenolide is 6.25, 12.5 and 12.5 μg / mL respectively, the minimum inhibitory concentration (MIC) of artemdubolide C is 12.5, 12.5 and 12.5 μg / mL respectively, and the minimum inhibitory concentration (MIC) of artemvulactone F is 12.5, 12.5 and 12.5 μg / mL respectively, and the compounds have great application potential in resisting plant pathogenic fungi.

The invention discloses an antagonistic indigenous bacterium UVK8 for efficiently preventing and treating rice false smut and application of the antagonistic indigenous bacterium UVK8. The antagonistic indigenous bacterium UVK8 is classified and named as bacillus amyloliquefaciens, and is preserved in the China General Microbiological Culture Collection Center on June 11, 2025, the preservation number is CGMCC NO.34861, and the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The antagonistic indigenous bacterium UVK8 shows excellent antagonistic action and bacteriostatic activity on rice ustilaginoidea virens, watermelon fusarium oxysporum, peach monilinia fusarium, banana fusarium oxysporum, exserohilum turcicum, bipolaris maydis and orchid fusarium oxysporum, and has relatively high biofilm content and certain rice straw degradation capability. Field test results show that the antagonistic indigenous bacterium UVK8 has a good prevention and treatment effect on rice false smut, the disease clump prevention effect reaches 86.28%, and the clump disease grain number prevention effect reaches 58.03%. Therefore, the antagonistic indigenous bacterium UVK8 has an important biocontrol application value.

The invention belongs to the technical field of molecular biological detection, and particularly relates to a primer pair, a detection reagent and an RPA-LFD kit for visually, ultrasensitively and rapidly detecting puccinia zeae and application. The sequences of an upstream primer and a downstream primer of the RPA primer pair are respectively shown as SEQ ID NO: 1 and SEQ ID NO: 2. The RPA primer pair can be used for visually detecting the puccinia zeae through RPA amplification or RPA-LFD by naked eyes, the sensitivity is ultrahigh (0.01 pg / mu L), and the specificity is strong; and no specific band exists on puccinia polystachys, bipolaris maydis, corn ear rot pathogen and curvularia maydis leaf spot pathogen.

The invention discloses multifunctional cold-resistant bacillus subtilis and application thereof, and belongs to the technical field of microorganisms. According to the invention, a strain of the Peribacillusfrigitorirans YM763 is obtained through separation and screening, and the strain can be used for preventing and treating corn diseases caused by Curcularia lunata, Exserohilum tubers and Bipolar maydis at the same time and degrading a chemical insecticide chlorantraniliprole, and has no cross resistance with existing bactericides and insecticides. The invention further provides a preparation method of the strain of the Peribacillusfrigitorirans YM763, and the strain of the invention has the advantages that the strain of the Peribacillusfrigitorirans YM763 can be used for preventing and treating corn diseases caused by Curcularia lunata, Exserohilum tubers and Bipolar maydis and degrading the chemical insecticide chlorantraniliprole; compared with the existing chemical synthesis pesticide for prevention and treatment, the method has the advantages of high efficiency, low toxicity, no environmental pollution and low possibility of generating drug resistance because of being from the natural environment.