Preparation and applications of Paenibacillus polymyxa GY40 and wettable powder of Paenibacillus polymyxa GY40

Abstract

The invention discloses a Paenibacillus polymyxa GY40 bacterial strain. The preservation number is CGMCC NO.14481. The invention also discloses a spore production fermentation culture method of the Paenibacillus polymyxa GY40 bacterial strain, and a method used for preparing bacterial powder and a wettable powder from the Paenibacillus polymyxa GY40 bacterial strain. Compared with terrestrial microorganisms, the Paenibacillus polymyxa GY40 bacterial strain possesses following advantages: salt resistance is excellent, growth temperature is low, and antibacterial effect is excellent. The spore production fermentation culture method is simple in formula; the main raw materials are agricultural product leftovers; the cost is low; the raw materials are widely available; bacterial strain growthspeed is high; fermentation temperature is low; fermentation time is short; fermentation conditions are convenient to control; fermentation spore yield is high; raw material cost is reduced; fermentation energy consumption is reduced; fermentation production efficiency is increased; the wettable powder possesses excellent preventing and treating effect on wheat scab and fusarium wilt of cucumber,and can be used in plantation of wheat and cucumber.

Description

technical field [0001] The present invention relates to a bacterial strain derived from the ocean, in particular to a Paenibacillus polymyxa GY40 bacterial strain, and the present invention also relates to a fermentation and cultivation method of the Paenibacillus polymyxa GY40 bacterial strain, using the bacterial strain to prepare bacteria powder and wettable powder methods and uses. Background technique [0002] Bacillus can produce endophytic spores with strong stress resistance, and the spores are suitable for storage and transportation, so they are the main active ingredients of the developed microbial agents. At present, most of the successfully developed biocontrol live bacteria preparations use spores as the main component. To study the spore-producing medium and fermentation conditions of the strains, and to improve the fermentation level and spore yield is the key to the development of live bacillus preparations, which is of great significance for improving produc...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is aimed at the deficiencies of the prior art, especially the deficiencies such as fewer excellent bacterial strains in production, poor adaptability, and higher cultivation temperature, and provides a salt-tolerant, low-cultivation temperature and simple nutrition derived from the ocean. A New Paenibacillus polymyxa GY40 Strain CGMCC NO.14481

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