CHIT1 and fungal infectious disease: In the future, genes that can enhance fungal infection efficiency (such as CDEP1 and CHIT1), genes toxic to insects (such as Vip3A and Cry1Ac proteins), and genes affecting insect molting (EGT) can be simultaneously expressed in B. bassiana or mixed in different strains of B. bassiana containing these proteins to enhance the insecticidal activity of B. bassiana against harmful insects and ultimately expand the application of B. bassiana in biological control.