Required for cytoplasm to vacuole transport (Cvt) and autophagy as a part of the autophagy-specific VPS34 PI3-kinase complex I (PubMed:28067330). This complex is essential to recruit the ATG8-phosphatidylinositol conjugate and the ATG12-ATG5 conjugate to the pre-autophagosomal structure (By similarity). ATG14 mediates the specific binding of the VPS34 PI3-kinase complex I to the preautophagosomal structure (PAS) (By similarity). Plays a crucial role in hyphal development, conidiogenesis and pathogenicity (PubMed:28067330). Also required for glycogen mobilization, quantity of lipid bodies, and the turgor pressure of appressoria (PubMed:28067330). Component of the autophagy-specific VPS34 PI3-kinase complex I (By similarity). Expression is hihghly increased in nitrogen starved hyphae, as well as in invasive hyphae (PubMed:28067330). The coiled-Coil domain is essential for autophagy (PubMed:28067330). Leads to the formation of sparse hyphae with necrotic centrality, and a reduced number of condia (PubMed:28067330). Fails to penetrate both hosts in infection assays with the two susceptible hosts rice and barley (PubMed:28067330). Leads also to delayed mobilization, reduced lipid bodies and lower turgor pressure of the appressoria (PubMed:28067330). Impairs the delivery of ATG8 to the vacuoles upon nitrogen starvation (PubMed:28067330). Belongs to the ATG14 family.