Bacillus velezensis strain wr8 and application thereof

Abstract

The invention relates to the technical field of microorganisms, in particular to a bacillus velezensis strain wr8 and application thereof. The bacillus velezensis wr8, fungicide and metabolite have the wide antibacterial and disease-resistant effects, and have the inhibiting effect on penicillium, penicillium, botrytis cinerea, escherichia coli, listeria monocytogenes and other germs, and in the direct application, the strain can be used for preventing and treating southern blight and root rot of siraitia grosvenorii, and can be used for preventing and treating banana fusarium wilt, orange mycosis, citrus reiculata mycosis and the like; the bacillus velezensis strain wr8 can be applied to fruit preservation of the plants, and the application range of the bacterial fertilizer biocontrol field is quite wide; and meanwhile, the strain can inhibit escherichia coli and listeria monocytogenes, can also be applied to the field of food preservation, has multiple functions and wide application fields, and has good prospects in the fields of later food processing, fruit and vegetable preservation, biological control and biological bacterial fertilizers.

Description

【Technical field】 [0001] The invention relates to the technical field of microbes, in particular to the bacillus velei strain wr8 and its application. 【Background technique】 [0002] The application of microorganisms in the fields of biological pesticides, biological fertilizers, and biological fresh-keeping has a long history. In actual work, those skilled in the art often screen microorganisms that have an inhibitory effect on mold and pathogenic bacteria as bio-control bacteria. Because microorganisms have green , environmental protection, not easy to cause chemical residues, environmental pollution and other problems, it has been widely promoted and applied at present; however, the biggest bottleneck in the application of bio-control bacteria is: how to enrich the microbial germplasm resource bank, and screen more bacteria with good disease resistance and antibacterial Sexual strains are key to the development of this field. In the long-term study, the applicant found t...

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Problems solved by technology

[0002] The application of microorganisms in the fields of biological pesticides, biological fertilizers, and biological fresh-keeping has a long history. In actual work, those skilled in the art often screen microorganisms that have an inhibitory effect on mold and pathogenic bacteria as bio-control bacteria. Because microorganisms have green , environmental protection, not easy to cause chemical residues, environmental pollution and other problems, it has been widely promoted and applied at present; however, the biggest bottleneck in the application of bio-control bacteria is: how to enrich the microbial germplasm resource bank, and screen more bacteria with good disease resistance and antibacterial Sexual strains key to development in the field

In the long-term study, the applicant found that Bacillus velezensis (Bacillus velezensis) is a class of microorganisms with good antibacterial and biocontrol effects. application, the applicant has also been committed to the development and research of various plant biocontrol bacteria, but in actual work, the applicant found that: different strains belonging to the same species have relatively large differences in their physiology, and some strains can inhibit certain The growth of a pathogenic bacterium, but other strains of the same genus do not necessarily have the same antibacterial effect as it. Therefore, the screening and research and development of strains is a never-ending research field. The discovery of new strains and applications of new strains It will provide a solid foundation for subsequent plant protection, food preservation and processing, biological bacterial fertilizer and other related biological protection fields

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