Cinnamon streptomyces rubiginosus ZX6 for preventing and treating sunflower sclerotinia rot and application of cinnamon streptomyces rubiginosus ZX6

Abstract

The invention discloses cinnamon streptomyces rubiginosus ZX6 for preventing and treating sunflower sclerotinia rot at seedling stages, and belongs to the field of microbial technologies. A preservation number of the cinnamon streptomyces rubiginosus ZX6 which is a strain is CGMCC 13116. The cinnamon streptomyces rubiginosus ZX6 has the advantages that as shown by separation activation and identification on pathogenic bacterium sclerotinia sclerotiorum applied to the sunflower sclerotinia rot, primary screening and secondary screening experiments on antagonistic bacteria and experiments such as strain identification and analysis on the antagonistic bacteria, the strain ZX6 is high in ability of inhibiting growth of sclerotinia sclerotiorum hyphae; the infection incidence of shells of sunflower seeds treated by original fermentation bacterium solution of the strain ZX6 can be lowered and is 40%, the seed germination promotion rate of fermentation filter liquor of the strain ZX6 is 51.1%, in-vitro leaf prevention and treatment effects of the original fermentation bacterium solution of the strain ZX6 are 54%, prevention and treatment effects of the original fermentation bacterium solution of the strain ZX6 in potted plant experiments are 58.3%, and accordingly growth and reproduction of the sclerotinia sclerotiorum can be effectively inhibited; conditions for cultivating the strain are simple, and the strain is easy to store, is environmentally friendly and has excellent development and application values.

Description

technical field [0001] The invention relates to the screening, identification and application of a strain of Streptomyces cinnamonensis ZX6 for preventing and treating sunflower sclerotinia, more precisely, relates to the preliminary application of the strain in the prevention and treatment of sunflower sclerotinia, and belongs to the technical field of microorganisms. Background technique [0002] Sclerotinia sclerotiorum is one of the most important diseases of sunflowers, which occurs in all countries in the world. The pathogen Sclerotinia sclerotiorum is highly pathogenic and can penetrate the epidermis of host plants, kill cells, and then infect sunflowers. Roots, stems, leaves, flower discs and other parts may even cause the whole or part of the plant to rot and die. If not managed properly, it will cause great losses to sunflowers. In recent years, the widespread occurrence and serious damage of sunflower sclerotinia have greatly affected the steady development of sun...

AI Technical Summary

Problems solved by technology

Chemical control mainly uses carbendazim, sclerotin, and sclerotinia, but the sunflower plants are too tall, and it is very difficult to apply them in the field. The effect of the chemicals on sclerotia in the soil is limited, so the control effect is not ideal

In terms of agricultural control, there is also a lack of economical, practical and effective methods

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