Strain of paenibibacillus polymyxa and application of paenibibacillus polymyxa

Abstract

The present invention provides a strain of paenibibacillus polymyxa and an application of the paenibibacillus polymyxa. The strain is named paenibacillus polymyxa HY31 and has deposit number is CCTCCNo: M20191102. The strain has a strong inhibitory effect on fusarium oxysporum cucumber specialization type, fusarium oxysporum tomato specialization type, fusarium oxysporum pepper specialization type and fusarium oxysporum wilt specialization type and other plant wilt disease pathogens, and besides, a strain agent prepared from the strain is applied on vegetables to prevent occurrence of wilt diseases and promote growth of the vegetables at the same time.

Description

technical field [0001] The invention relates to the technical field of microorganisms, in particular to a strain of Paenibacillus polymyxa and its application. Background technique [0002] Fusarium wilt, also known as blight, is a plant disease caused by fungi or bacteria. It is a worldwide soil-borne disease that has a wide range of distribution, many types of bacteria, difficult control, and seriously affects crop yield and quality. Onset is sudden, and symptoms include severe spotting, wilting, or death of leaves, flowers, fruit, stems, or the entire plant. Most economically important crops such as tomato, cucumber, and cotton are infected by one or more diseases. Fusarium wilt can affect flowers, leaves, bud bags, seedlings, twigs, stems (vines) and top tips. Fusarium wilt is a major epidemic disease in my country. Due to its many vectors, it can be actively and passively transmitted through the natural flow, transfer and transfer of infected crop seedlings, diseased ...

AI Technical Summary

Problems solved by technology

Fusarium wilt is a major epidemic disease in my country. Due to its many vectors, it can be actively and passively transmitted through the natural flow, transfer and transfer of infected crop seedlings, diseased plant residues, farming tools, soil and running water; , with the adjustment of the agricultural industry structure, the facility agriculture based on greenhouses and greenhouses has developed rapidly, especially in vegetable planting. The same kind of vegetables; and the chlamydospores of the pathogenic bacteria of fusarium wilt survive in the soil for a long time, and the combination of these reasons leads to serious occurrence of fusarium wilt in vegetables and is difficult to cure

[0003] At present, for the prevention and treatment of vegetable wilt, three major measures are generally adopted: breeding resistant varieties, agricultural measures, and chemical control. However, these three methods all have some problems, such as low disease resistance of varieties and easy loss of resistance; Control agents have poor control effect in the later stage, bacteria are prone to develop drug resistance, and the negative environmental effects are obvious; agricultural measures are easily restricted by geographical conditions, and it is difficult to promote them on a large scale, etc.

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