CHEK1 and infection: Fus3/Kss1-type MAPK homologs have been studied using knockout mutants, highlighting the crucial role of these genes in the infection process of the following phytopathogenic, entomopathogenic, and mycoparasitic fungi: Magnaporthe oryzae (Pmk1), Pyrenophora teres (Ptk1), Cochliobolus heterostrophus (Chk1), Colletotrichum lagenarium (Cmk1), Fusarium oxysporum (Fmk1), Beauveria bassiana (BbMpk1), Metarhizium acridum (MaMk1), and Trichoderma virens (TmkA) [33,47,48,49,50,51,52,53].