In Magnaporthe oryzae, the protein kinase MoCK2 plays a crucial role in the pathogenicity of the fungus. Since knockout mutants of its regulatory subunits completely lose pathogenicity, analyzing differences in protein phosphorylation between mutants and wild-type strains and identifying proteins interacting with MoCK2 are essential steps to elucidate the underlying mechanisms by which MoCK2 regulates pathogenicity. This investigation provides critical theoretical support for subsequent efforts to decipher the molecular basis of pathogenicity development.