Acyl-CoA synthetase (ACS) functions as a hub linking lipid metabolism with in cellular physiologies by producing active intermediate of catalyzes acyl-CoA. However, the biological roles of ACS are largely unknown in filamentous fungi. In this study, an ortholog of yeast Faa1, named BbFaa1, was functionally characterized in the filamentous entomopathogenic fungus Beauveria bassiana. BbFaa1 was associated with vesicular membrane, and its loss resulted in the impaired cytomembrane integrity. Notably, in ΔBbfaa1 mutant strain, the translocation of hydrophobins across cell membrane was significantly hampered, which resulted in the reduced hydrophobicity of aerial mycelia and conidia. In addition, loss of BbFaa1 significantly weakened fungal virulence. Our findings indicate that the metabolism of acyl-CoA synthetase Faa1 contributes to the cytomembrane functionality which cascades hydrophobin translocation and differentiation, thus affecting virulence of B. bassiana.
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| http://dx.doi.org/10.1016/j.micpath.2022.105419 | DOI Listing |
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