Streptomyces mediolani ZW-1 bacterial strain, and bacteriostatic application of fermentation broth thereof

Abstract

The invention relates to a streptomyces mediolani ZW-1 bacterial strain, and a bacteriostatic application of fermentation broth thereof. Inhibited bacteria comprise wheat fusarium nivale, wheat fusarium graminearum, alternaria leaf spot, sclerotinia sclerotiorum, spinach altemaria solania, helminthosporium carbonum, watermelon fusarium wilt or cotton fusarium wilt. The streptomyces mediolani ZW-1 bacterial strain and the fermentation broth thereof can inhibit the growth of plant pathogenic fungal hyphae, lead to enlargement of cell walls of the pathogenic fungal hyphae and concentration of protoplasts, can inhibit conidial germination and germ tube growth of the spinach altemaria solania, have good bacteriostatic effects, and have good development and application prospects for biological prevention and control of plant diseases.

Description

technical field [0001] The invention relates to the use of a Streptomyces strain from the sea, in particular to the antibacterial use of the Streptomyces mejolanus ZW-1 strain and its fermented liquid. Background technique [0002] Biological control has become an important means of plant disease control. However, most of the microbial strains currently used for biological control come from land, and the screening of terrestrial microorganisms over the years has resulted in a lower and lower probability of screening microorganisms that produce new disease resistance mechanisms, so more and more people are turning their attention to In addition to the ocean, it is hoped to develop new anti-pathogenic active substances from the extremely diverse microorganisms in the marine environment for the biological control of plant diseases. In recent years, searching for new species of microorganisms and physiologically active substances with special functions from the ocean has become...

AI Technical Summary

Problems solved by technology

At present, with the improvement of people's living standards and the emphasis on food safety, the use of some highly toxic pesticides is gradually restricted. The prevention and control of plant diseases requires the development of a large number of non-toxic microbial pesticides. The screening of excellent microbial strains is the basis for the research and development of biological pesticides. The microbial strains are far from meeting the needs of microbial pesticide development, and the isolation and screening of new antibacterial microbial strains is of great significance for the development of microbial pesticides

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