Pseudomonas. chlororaphis subsp. Aurantiaca Pa40 and application thereof

Abstract

The invention provides a Pseudomonas.chlororaphis subsp.Aurantiaca Pa40, preservation number of which is CGMCCNo.2764. The strain generates HCN, prolease and siderophore relative to antibacterium and has plate board inhibition effect on a majority of tested plant pathogenic fungi and a part of tested plant pathogenic bacteria. Control effect of the biocontrol strain Pa40 on rhizoctonia solani is detected by taking wheat as an indicator plant on the plate, in the greenhouses and in the fields; a result shows that the control effects of the Pa40 on the rhizoctonia solani on the plate bed, in the greenhouse and in the fields are respectively 53.97%, 68.10% and 72.46%; wherein the control effects on the rhizoctonia solani in the greenhouses and fields are higher than that of validamycin.

Description

Pseudomonas chloropinus subspecies orange Pa40 and its application technical field The invention relates to a new microbial strain and its application, in particular to a Pseudomonas chloropinus subsp. orange strain and its application in biological disease control. Background technique Wheat sheath blight (Rhizoctonia acerealis), also known as blight blight and sharp eye spot, is one of the worldwide diseases with a wide distribution. Mainly occurs in temperate wheat regions of the world. It was reported abroad as early as 1934. Although this disease has occurred earlier in our country, the harm is relatively light. Since the mid-to-late 1970s, with the replacement of wheat varieties and the popularization and application of high-yield cultivation measures (such as early sowing, irrigation, high fertilizer, etc.), the disease has generally occurred in various winter wheat regions in my country, and has a tendency to increase year by year. The disease area expanded from...

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Problems solved by technology

However, there is no report on the use of Pseudomonas chloropinus subspecies orange for the control of wheat sheath blight in China and abroad

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