Involved in the selective degradation of mitochondria via autophagy during starvation and at post-log phase (By similarity). Autophagy is required for proper vegetative growth, asexual/sexual reproduction, and full virulence (PubMed:28894236). Autophagy is particularly involved in the biosynthesis of deoxynivalenol (DON), an important virulence determinant (PubMed:28894236). Belongs to the ATG33 family.