A strain antagonizing the pathogenic bacteria of jujube fruit shrinkage disease and its application

Abstract

The invention discloses a bacterial strain antagonistic to pathogenic bacteria of jujube fruit shrink disease and an application of the bacterial strain. The antagonistic bacteria provided by the invention are bacillus subtilis STO-45 of which the microbial collection number is CGMCC No.9026. The bacillus subtilis STO-45 is separated from soil at the root of a healthy jujube tree and has remarkable and efficient antagonistic effect on the pathogenic bacterial of the jujube fruit shrink disease of jujube trees; the bacillus subtilis STO-45 further is capable of effectively inhibiting the alternaria tenuissima mycelia of the pathogenic bacteria of the jujube fruit shrink disease from growing and preventing and treating plant diseases induced by the pathogenic bacteria of the jujube fruit shrink disease; besides, the bacterial strain can be applied to the aspects of preventing and treating various pathogenic bacteria of the jujube fruit shrink disease, and jujube fruit anthracnose and a plurality of other tree diseases, and the like; and as a result, the bacterial strain is high in prevention effect and good in environmental safety, and has biological prevention and control potential as well as excellent development and application prospects.

Description

technical field [0001] The invention relates to an antagonistic bacterial strain, in particular to an antagonistic bacterial strain which antagonizes multiple pathogenic fungi against jujube fruit diseases and application thereof. Belonging to the field of microorganisms, it can be used for forest trees, crop protection, and disease prevention and control. Background technique [0002] Jujube tree is one of the most representative national fruit trees in my country, especially in mountainous, sandy, alkaline, and poor areas, it occupies a special and important position in helping farmers get rid of poverty and financial self-reliance. In the 1950s, a number of diseases seriously affecting jujube production were reported one after another, among which the diseases caused by fungi accounted for more than 90%. And jujube mad disease, jujube fruit shrinkage disease and jujube fruit cracking disease are the most serious harms. Compared with the jujube madness caused by Phytopla...

AI Technical Summary

Problems solved by technology

[0005] One of purpose of the present invention is to provide an antagonistic bacterial strain that can efficiently prevent and treat multiple pathogenic bacteria that cause jujube fruit shrinkage disease--Bacillus subtilis STO-45 for the technical problems existing in the prevention and treatment of jujube fruit shrinkage disease. The antagonistic bacterial strain Bacillus subtilis STO-45 is a biocontrol bacterial strain isolated and screened from the root soil of healthy jujube trees. The bacterial strain of the present invention has an efficient antagonistic effect on the pathogenic bacteria of jujube fruit shrinkage disease Alternaria tenuissima , the application of the antagonistic bacterial strain Bacillus subtilisSTO-45 of the present invention can solve the problems of pesticide residues and environmental pollution in the current method of chemical prevention and treatment of jujube fruit shrinkage disease, and the antagonistic bacterial strain of the present invention can also prevent and treat jujube fruit shrinkage caused by various pathogens Anthracnose of jujube fruit caused by glyospora anthracnose and related tree diseases caused by black sour skin fungus, apple black sour skin fungus, peach dry blight, Fusarium oxysporum, Fusarium solani, etc.

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