Plant pathogenic fungi antagonistic bacteria strain and its use in control of plant diseases

Abstract

The invention discloses a strain of plant pathogenic fungi antagonistic bacterium and the application of the plant pathogenic fungi antagonistic bacterium in preventing and curing plant diseases. Theplant pathogenic fungi antagonistic bacterium is bacillus subtilis BEB2 CGMCC No.2243. The plant pathogenic fungi antagonistic bacterium bacillus subtilis BEB2 CGMCC No.2243 can prevent and cure the plant diseases which are caused by banana vascular wilt pathogen, colletotrichum musae, pyricularia grisea, corynespora leaf-fall disease of hevea rubber, bamboo fusarium axysporum and mango anthracnose pathogen, and the plant pathogenic fungi antagonistic bacterium bacillus subtilis BEB2 CGMCC No.2243 in particular can inter-grow with bananas, can survive in the bananas stably, and can prevent andcure banana panama diseases.

Description

technical field [0001] The invention relates to a plant pathogenic fungus antagonistic bacteria and its application in preventing and treating plant diseases. Background technique [0002] Plant endophytic bacteria refer to bacteria that can enter living plant tissues during their lifetime or at least during a certain period of their lifetime, and their existence does not significantly change the phenotypic characteristics and functions of plant tissues. In 1926, Perotti discovered the existence of endophytic bacteria in the root tissues of many healthy plants, and then the research in this area made great progress, and a variety of endophytic bacteria were found in the tissues of many plants. These endophytic bacteria use plant tissue as their habitat, and often promote growth, prevent diseases and insect pests, fix nitrogen, resist adversity (such as drought, etc.), and resist feeding by animals (insects, nematodes, herbivorous mammals, etc.) , anti-pathogenic fungi and b...

AI Technical Summary

Problems solved by technology

The use of chemical agents to prevent and control the disease is particularly difficult, because while killing pathogenic bacteria in the soil, it also inhibits the growth of beneficial bacteria, destroys the micro-ecology of the soil, and at the same time causes great adverse effects on fruits and the environment

The use of disease-resistant varieties is greatly restricted in production due to the long breeding cycle, the need for manpower and funds

There have been many reports on the use of endophytic bacteria to control plant diseases, but there has been no report on the use of endophytic bacteria to control banana wilt at home and abroad.

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