Acid-resistant pseudomonas protegens CLP-6 and application thereof

Abstract

The invention provides acid-resistant pseudomonas protegens CLP-6 and application thereof. According to the acid-resistant pseudomonas protegens CLP-6 and the application thereof, the bacterial strainof the pseudomonas protegens CLP-6 is preserved in China General Microbiological Culture Collection Center on October 27th, 2016, and the biological preservation number of the pseudomonas protegens CLP-6 is CGMCC No.13205; the bacterial strain of the pseudomonas protegens CLP-6 has acid resistance, is good in disease prevention and plant growth promotion effects and high in stress resistance, hasthe antagonistic activity of pathogenic bacteria, is wide in soil acidity tolerance range and wide in antibacterial spectrum, and has application and development potential in prevention and treatmentof bacterial wilt, black shanks and brown spots; and meanwhile, under the general background that the acidification conditions in China is increasingly severe, the research on the bacterial strain ofthe pseudomonas protegens CLP-6 has reference significance in prevention and treatment of plant diseases under various soil qualities, a microbial resource is provided for green prevention and control over the bacterial wilt, the black shanks and the brown spots in acid soil, and secondary metabolites of microorganisms are excavated, so that an important foundation can be laid for the biocontrolefficacy on the bacterial wilt, the black shanks and the brown spots in the acid soil.

Description

technical field

[0001] The invention belongs to the technical field of microbes, and in particular relates to an acid-resistant strain of defensive pseudomonas CLP-6 and its application. Background technique

[0002] Tobacco will suffer from a variety of fungal and bacterial diseases throughout the growth period. There are more than 60 kinds of tobacco diseases recorded in China, of which nearly 10 are the most serious, mainly including tobacco black shank, bacterial wilt, red spot, and anthracnose , black disease and powdery mildew. Some pathogens can damage tobacco at various growth stages. Rhizome diseases such as tobacco black shank (Phytophthoraparasitica var. Nicotianae) and tobacco bacterial wilt (Ralstonia solanacearum) can damage tobacco from seedling to maturity. In the later period, the damage was serious, and it became popular with the climate of different years, resulting in a serious reduction in the production of tobacco fields and seriously affecting the yie...

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