Bacillus cereus Scu1 strain and application thereof

Abstract

The invention relates to the field of biology, in particular to a bacillus cereus Scu1 strain and application thereof. The strain is preserved in china center for type culture collection; the addressis Wuhan University, Wuhan, China; the post code is 430072; the preservation date is 18 December 2020; the preservation number is CCTCC NO: M2020915; and the taxonomy name is Bacillus cereus. The strain has an obvious inhibition effect on magnaporthe grisea, and the strain can generate an antibacterial substance cyclic lipopeptide surfactin.

Description

technical field [0001] The invention relates to the field of biology, in particular to a Bacillus cereus Scul strain and application thereof. Background technique [0002] Magnaporthe oryzae is a widely occurring pathogenic fungus of rice, which can reduce the world's rice production by 10-30% every year, posing a major threat to global food security. At present, the main methods used for the control of blast fungus are spraying chemical drugs or cultivating resistant rice varieties through biological breeding. The production and use of chemical drugs will cause environmental pollution and residues, and also pose a potential threat to human health. The biological breeding method also faces the weakness of the blast fungus, which is easily mutated and regains its pathogenicity. Therefore, new biological control technology has become an urgent need. [0003] Bacillus genus (Bacillus genus) strains can synthesize many biologically active secondary metabolites, which can inhib...

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Problems solved by technology

However, the inhibition of these strains against rice blast fungus has not been reported

Bacillus subtilis BS155 isolated from the ocean is reported to have inhibitory effects on rice blast fungus, and it also functions through cyclic lipopeptides fengycins, which can also cause ROS outbreaks and chromosome condensation in rice blast fungus. However, these lipids Peptides had no obvious inhibitory effect on Magnaporthe grisea

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