CTSB and infection: The B. cinerea mutants BcAtg3 and BcAtg7 do not have the autophagy process (46); BcAtg6 was related to infection hyphae structure morphogenesis (47), and cysteine protease BcAtg4 determined its crucial roles in the deconjugation step of conjugation of phosphatidyl ethanolamine (PE) to UBL Atg8 proteins (48).