Bacillus vallismortis strain lrb-5, biocontrol agent, bacterial fertilizer and application thereof

By using biocontrol agents and microbial fertilizers prepared from Bacillus cereus LRB-5, the problem of continuous cropping obstacles in apple trees was solved, and the inhibition of pathogens and improvement of soil microecology were achieved, promoting the healthy growth of apple trees.

CN120137845BActive Publication Date: 2026-06-30NORTHWEST A & F UNIV +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWEST A & F UNIV
Filing Date
2025-04-01
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Apple cropping obstacle (ARD) causes newly planted apple seedlings to suffer from problems such as weak tree vigor, poor branch development, poor root system, root rot, delayed fruiting and low yield. Existing control methods have drawbacks such as environmental pollution, long time consumption, high cost and no obvious short-term effect.

Method used

A strain of Bacillus cereus LRB-5 was provided for the preparation of biocontrol agents and microbial fertilizers. It can inhibit the growth of various plant pathogens, promote plant growth and development, alleviate the obstacles of continuous cropping of apples, and improve the soil microecology by secreting a variety of cell wall degrading enzymes and volatile organic compounds.

Benefits of technology

It significantly inhibits the mycelial growth and conidial germination of plant pathogens, reduces the content of phenolic acids in the soil, increases the number of beneficial microorganisms, enhances soil enzyme activity, promotes the root growth of apple trees, and effectively alleviates the obstacle of continuous cropping of apples.

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Abstract

This invention relates to the field of agricultural microbiology, specifically disclosing a strain of *Bacillus vallismortis* LRB-5, a biocontrol agent, a microbial fertilizer, and their applications. The *Bacillus vallismortis* LRB-5 was deposited on January 25, 2018, at the China General Microbiological Culture Collection Center (CGMCC), with accession number CGMCC No. 15306, and is classified as *Bacillus vallismortis*. The *Bacillus vallismortis* LRB-5 provided by this invention can inhibit the growth of plant pathogens, promote the growth and development of *Arabidopsis thaliana* and apple, and alleviate continuous cropping obstacles in apples.
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