Application of stenotrophomonas maltophilia in inhibition of pyricularia oryzae

By killing and inhibiting rice blast fungus, Stenotrophomonas maltophilia solves the environmental pollution and drug resistance problems of chemical control of rice blast, provides an efficient and green control method, and achieves significant growth inhibition and spore germination inhibition of rice blast fungus.

CN120678104APending Publication Date: 2025-09-23INST OF MICROBIOLOGY CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202510771230.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-10
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

Existing chemical agents for controlling rice blast have problems of environmental pollution and drug resistance. Biological control methods are easily affected by environmental factors and have unstable effects, and there is a lack of efficient and green control methods.

Method used

Stenotrophomonas maltophilia CGMCC NO.1.1788 was used to kill and inhibit the rice blast fungus (Magnaporthe oryzae Guy11), obtaining nutrients through killing and inhibiting growth and spore germination.

Benefits of technology

Significantly reduce the use of chemical pesticides and prevent the development of drug resistance. The growth inhibition rate of Stenotrophomonas maltophilia on rice blast fungus reaches 90.9%, and the spore germination inhibition effect is significant, providing a green and safe prevention and control method.

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Abstract

The invention discloses an application of stenotrophomonas maltophilia CGMCC (China General Microbiological Culture Collection Center) NO.1. 1788 in inhibiting the growth of rice blast bacteria, and particularly discloses an application of stenotrophomonas maltophilia CGMCC NO.1. 1788 in inhibiting the growth of rice blast bacteria. Experiments prove that the stenotrophomonas maltophilia CGMCC NO.1. 1788 can be used for inhibiting and killing the rice blast bacteria, which is mainly embodied in killing the rice blast bacteria to obtain nutrition, inhibiting the growth of the rice blast bacteria and / or inhibiting the spore germination of the rice blast bacteria, and the stenotrophomonas maltophilia CGMCC NO.1. 1788 has the advantages that the stenotrophomonas maltophilia CGMCC NO.1. 1788 can be used for inhibiting and killing the rice blast bacteria; therefore, the stenotrophomonas maltophilia can be used as a natural microbial antagonistic agent for preventing and treating the rice blast, the use of chemical pesticides is remarkably reduced, and the generation of the drug resistance of phytopathogen caused by abuse of the chemical pesticides is prevented. The method has an important application value.
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