11 results about "Ustilaginoidea virens" patented technology

The invention belongs to the technical field of plant genetic engineering, and particularly relates to an SCRE10 gene for improving rice disease resistance and application of the SCRE10 gene, the base sequence of the SCRE10 gene is shown as SEQ ID NO.1, and the amino acid sequence of the SCRE10 gene is shown as SEQ ID NO.2. Through construction of a dexamethasone induced expression SCRE10 transgenic rice plant, it is found that the transgenic rice can significantly induce PR gene expression and active oxygen outbreak, and the resistance of rice to false smut and bacterial leaf blight can be improved. The invention proves that heterologous inducible expression of the Ustilaginoidea virens SCRE10 gene has the function of positively regulating the disease resistance of the rice, and the SCRE10 gene can be used for improving the disease resistance of the rice, which is of great significance to the creation of disease-resistant germplasm of the rice.

The invention relates to the field of ustilaginoidea virens prevention and treatment, and discloses a novel green ustilaginoidea virens prevention and treatment method which comprises the following steps: S1, irradiating seeds through a sterilization waveband ultraviolet lamp; s2, spraying the biological agent to rice plants in the booting stage of the rice; s3, selecting matrine plant extract to spray rice plants at a key stage when the rice is close to a crevasse and is about to enter a susceptible disease; s4, applying the electrolyzed water generator to prepare weakly acidic electrolyzed water in the heading stage of the rice, and spraying the weakly acidic electrolyzed water to the rice plants. Green prevention and control means such as ultraviolet sterilization, biological agents, plant extracts and electrolyzed water are adopted, the base number of pathogenic bacteria is reduced by treating seeds through ultraviolet rays, chemical residues are not introduced, bacillus subtilis serves as the biological agents, bacteria are used for bacteriostasis, matrine plant extracts are natural, and the environment-friendly effect is achieved. The weakly acidic and weakly alkaline electrolyzed water prevents and controls diseases by virtue of unique physicochemical properties, and is pollution-free.

The invention discloses bacillus velezensis RMM03 and application of a product of the bacillus velezensis RMM03 in preventing and treating rice false smut. The invention discloses bacillus velezensis RMM03 which is preserved in Guangdong Province Microbial Culture Collection Center on November 19, 2024, the preservation address is 5th floor, No.59 building, No.100 Courtyard, Xianlie Middle Road, Guangzhou, and the preservation number is GDMCC No.65510. The bacillus velezensis RMM03 is named as bacillus velezensis RMM03. The bacillus velezensis RMM03 is named as bacillus velezensis RMM03. Indoor and field tests show that the strain has a remarkable inhibition effect on the growth of rice ustilaginoidea virens, prevention and treatment can be carried out 10-15 days before crevasse, 0-5 days before crevasse and 0-5 days after heading, the prevention and treatment time span is long, and high yield and high quality of rice are effectively guaranteed.

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 application discloses a Burkholderia glumae RS-36 and application thereof, and belongs to the technical field of microorganisms. Burkholderia gladioli The application provides a Burkholderia glumae (B. glumae) RS-36 with a preservation number of CCTCC No: M 20221584, and application of the B. glumae RS-36. Burkholderia gladioli The B. glumae RS-36 provided by the application has inhibiting effects on Magnaporthe oryzae, Ustilaginoidea virens, Exserohilum turcicum and Pyricularia grisea, can secrete indole acetic acid for promoting plant growth, can keep good activity in an acidic environment with a pH of 5 and a drought environment, has strong stress resistance, and has important significance for promoting green and sustainable development agriculture.

The invention relates to the field of plant protection and biological control, in particular to a fungus elicitor STOM and application thereof in plant immunity induction and disease resistance. The invention provides a Ustilaginoidea virens elicitor protein STOM and a coding gene thereof, the elicitor protein is an amino acid as shown in SEQ ID NO: 2, the coding gene STOM is a nucleotide molecule as shown in SEQ ID NO: 1, and the invention further provides the Ustilaginoidea virens elicitor STOM and application of the Ustilaginoidea virens elicitor STOM in induction of plant immunity and disease resistance. Experiments prove that the elicitor protein can significantly activate plant defense reactions, such as active oxygen bursting, defense gene expression and MAPK activation; the disease resistance of the nicotiana benthamiana to diseases such as botrytis cinerea and sclerotinia sclerotiorum can be improved, pathogenic bacterium infection is resisted, and the occurrence of the diseases is effectively prevented or relieved. The elicitor protein provides a new material resource for research and development of protein pesticides / plant immune resistance inducers, provides material and theoretical guidance for compounding of biopesticides, and has a wide application prospect in agricultural production.

The invention discloses pantoea agglomerans RMM02 and application of a product of the pantoea agglomerans RMM02 in preventing and treating rice false smut. The Pantoea agglomerans RMM02 is classified and named as Pantoea agglomerans, and the preservation number of the Pantoea agglomerans RMM02 is GDMCC (China General Microbiological Culture Collection Center) No.65516; the preservation unit is Guangdong Microbial Culture Collection Center; the preservation time is November 29, 2024. The pantoea agglomerans RMM02 is separated from soil of a rice false smut occurrence plot, is screened through an indoor confrontation test, and has remarkable inhibition activity on the false smut. Indoor bacteriostasis tests show that the active bacterium has remarkable inhibition activity on Ustilaginoidea virens, and indoor and field tests show that the bacterium has a remarkable inhibition effect on the growth of Ustilaginoidea virens and can control the development of the disease condition during the onset period of field Ustilaginoidea virens. The biocontrol microbial inoculum prepared after fermentation of the strain can effectively prevent and treat rice false smut damage and guarantee high yield and high quality of rice.

The present invention relates to the field of pesticides, and discloses an application of a benzaldehyde thiosemicarbazone compound and a bactericide, the benzaldehyde thiosemicarbazone compound has a structure represented by a formula (I), in the formula (I), A is CH or N; r1 is selected from halogen; and R2 and R3 are respectively and independently selected from alkyl groups of C2-C6. The benzaldehyde thiosemicarbazone compound provided by the invention can effectively prevent and treat plant fungal diseases, has an excellent prevention and treatment effect on plant diseases caused by fungi such as magnaporthe oryzae, ustilaginoidea virens, rhizoctonia solani, fusarium graminearum and fusarium pseudograminearum, and has a very good market development prospect. Formula (I)

The application discloses application of Pantoea agglomerans RMM02 and a product thereof in prevention and treatment of rice smut. Pantoea agglomerans The classification name of the Pantoea agglomerans RMM02 is , the preservation number is GDMCC No. 65516, the preservation unit is Guangdong Microbial Culture Collection Center, and the preservation time is November 29, 2024. The Pantoea agglomerans RMM02 is separated from a soil of a rice smut occurrence plot, and is screened through indoor confrontation test and has significant inhibitory activity on Ustilaginoidea virens. Through indoor bacteriostatic test, it is shown that the active bacteria have significant inhibitory activity on Ustilaginoidea virens. Through indoor and field tests, it is shown that the bacteria have significant inhibitory effect on growth of Ustilaginoidea virens, and can control development of a disease during a field smut occurrence period. A biocontrol fungicide prepared after fermentation of the bacteria can effectively prevent and treat smut hazards, and guarantees high yield and high quality of rice.

The utility model relates to the technical field of preparation of false smut prevention and control fungicide, in particular to raw material treatment equipment for preparation of false smut prevention and control fungicide, which comprises a raw material treatment box, a filling port arranged on the upper surface of the raw material treatment box, a servo motor arranged on the right side of the filling port, a driving shaft connected with an output shaft of the servo motor, and a stirring shaft arranged on the outer wall of the driving shaft. The tail end of the driving shaft is connected with a fixed bearing; an auxiliary mixing assembly is arranged in the stirring shaft and comprises a moving groove formed in the stirring shaft, a rotating shaft is slidably mounted in the moving groove, mixing blades are fixedly mounted on the outer wall of the rotating shaft, an elastic winding rope and a limiting piece are arranged between the adjacent mixing blades, and the elastic winding rope is located in the moving groove. The raw material mixing and stirring treatment effect can be further improved through the matching of the stirring shaft and the auxiliary mixing assembly, so that the microbial agent mixing treatment effect is ensured, and the stirring uniformity is also ensured.

The application discloses a Ustilaginoidea virens dominant strain HEB07 and construction of a Ustilaginoidea virens pathogenic bacterium and millet interaction space-time atlas, relates to the technical field of biology, and the strain is screened and verified, the strain has the infection breadth of different millet varieties and the infection pathogenic sensitivity and survival rate of any millet variety, and has high affinity of recombination transformation of a GFP fluorescent label, so as to constitute a gene recombination strain using a green fluorescent protein GFP and explore the Ustilaginoidea virens pathogenic bacterium and millet interaction dominant strain. The application can provide important technical support for cloning research of millet disease-resistant genes, and provide strong scientific basis and technical means for cultivating millet varieties with high resistance to Ustilaginoidea virens.