Since animals frequently encounter a variety of harmful fungi in nature, their ability to develop sophisticated anti-fungal strategies allows them to flourish across the globe. Extensive studies have highlighted the significant involvement of indigenous microbial communities in human health. However, the daunting diversity of mammalian microbiota and host genetic complexity are major obstacles to our understanding of these intricate links between microbiota components, host immune genotype, and

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... disease phenotype. In this study, we sought to develop a bacterium-fungus-Drosophilamodel to systematically evaluate the anti-fungal effects of commensal bacteria. Results We isolated the pathogenic fungal strain, Diaporthe FY, which was detrimental to the survival and development Contributions WL, WS, and JL conceived and designed the experiments; WS, JL, PB and BM performed the experiments; WS performed the statistical analysis; WL and WS wrote the paper. All authors read and approved the final manuscript.