Symbiotic Bacteria System of Locusta migratoria Showed Antifungal Capabilities against Beauveria bassiana .

The stability of symbiotic flora is an important indicator of the health of an organism. Symbiotic bacteria have been proven to be closely involved in the immune process of organisms. The pathogenicity of was studied in relation to symbiotic bacteria on the surface and inside of the migratory locust (). The results showed that the surface disinfection of test locusts contributed to the pathogenicity of to locusts. Most of the surface bacteria of caused some inhibition of growth, and LM5-4 (), LM5-2 (), and LM5-13 () showed the highest inhibitory effect on the growth of The inoculation of locusts with additional surface symbiotic bacteria reduced the virulence of to . Infection by different strains of caused similar changes in the symbiotic flora of migratory locusts. The inoculation of locusts with additional intestinal symbiotic bacteria ( sp.) reduced the virulence of to . These findings illustrate the effect of bacterial communities on fungal infections in when seen from the perspective of ecology in a microenvironment. The active antifungal substances of such bacteria and their mechanisms of action need further study.