Bacillus subtilis YS1 having antifungal activity, preparation method of its mutants by gamma radiation and the mutants thereof

摘要

The invention is manufactured using the antifungal activity of bacteria of Bacillus subtilis (Bacillus subtilis) YS1 and relates to their mutants, more particularly the one antifungal activity of bacteria isolated from the hot springs Bacillus subtilis YS1 and gamma irradiation its mutants, and a method of producing mutants by the exposure to radiation. Bacillus microorganism having the antifungal activity of the present invention subtilis YS1 and the mutant showed a broad antifungal spectrum to control the plant diseases by various fungi as well as effective in the high resistance and viability of the commercial chemical pesticide environment-friendly It can be used in the agricultural chemicals using microorganisms and organic matter resolution functional environment-friendly soil conditioner, compost unit homework, environmental cleaning agent and the like. In addition, the mutant separation method through the irradiation of the present invention can be used to quickly and easily improve the functional strain.