. We show that the initiation of autophagy requires acetylation of the dynamin-like GTPase FgVps1 at lysine 216 by the histone acetyltransferase FgHat2. This modification promotes the interaction between FgVps1 and the autophagy protein FgAtg8 and facilitates the endosomal release of the sorting nexin FgSnx4. Released FgSnx4 is essential for directing FgAtg9 trafficking to the phagophore and for interacting with FgAtg8 through its N-terminal Atg8-family interacting motif (AIM), thereby ensuring proper modulation of FgAtg8 during autophagy. Together, these findings reveal an acetylation-dependent mechanism that coordinates autophagy, providing new insights into the regulation of autophagy in phytopathogenic fungi.
Chen et al. (Sun,) studied this question.