Bacillus amyloliquefaciens for preventing and treating botrytis cinerea in plants and application of bacillus amyloliquefaciens

Abstract

The invention relates to bacill us amyloliquefaciens sw17 for preventing and treating botrytis cinerea in plants and an application of the bacillus amyloliquefaciens. The bacterium (the bacillus amyloliquefaciens sw17) is preserved in China General Microbiological Culture Collection Center with preservation number of CGMCC No.14365; and the bacterium can take an inhibitory effect on gray mold of strawberry, gray mold of tomato and gray mold of cucumber caused by botrytis cinerea Pers., with a bacteriostasis rate ranging from 62% to 74%. The bacillus amyloliquefaciens sw17, which is provided by the invention is separated from rhizosphere soil of healthy fruit trees in a demonstration orchard, is free from ecological toxicity, high in safety and good in antibacterial effect, and the bacillus amyloliquefaciens sw17 is simple in culture and short in cycle; and the bacillus amyloliquefaciens sw17 has a quite broad application prospect in biological control of plant diseases.

Description

technical field [0001] The invention relates to the field of development and utilization of microbial germplasm resources, in particular to a bacillus amyloliquefaciens used for preventing and treating botrytis cinerea and its application. Background technique [0002] Botrytis cinerea, also known as gray rot and white spot, is one of the main diseases in crop production, mostly caused by Botrytis cinerea Pers. Botrytis cinerea is a fungus of the genus Botrytis, and its sexual form is Botryotiniafuckeliana Whetzel. It is not common in the natural state and can cause gray mold of more than 200 dicotyledonous plants, including solanum Solanaceae (Tomato, Capsicum annuum Linn., etc.), Cucurbitaceae (Cucumis sativus Linn., Cucurbita pepoLinn., etc.), Rosaceae (Strawberry, Begonia ( Malus spectabilis Borkh.), etc.], grape family (Vitaceae), etc., can also cause broad bean (Vicia faba Linn.) red spot, flower rot, British rot, etc. More than 1400 hosts have recently been reported...

AI Technical Summary

Problems solved by technology

[0005] Although many kinds of bacillus have been developed for the preparation of microbial fungicides, due to the diversity of bacillus populations, that is, strains, different bacillus and even different strains of the same bacillus have different antibacterial spectrum, antibacterial activity and antibacterial characteristics. Screening highly effective Bacillus biocontrol agents with different targets is still a topic of concern for scientific research in various countries now and for a long time to come.

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