Given the important roles that PGRPs play in the recognition and inhibition of bacterial pathogens and the subsequent initiation of immune pathways in response to pathogen invasion, exploring novel family members and investigating the functional characteristics in C. tritonis are essential for understanding the evolution, diversity, and immune mechanisms of PGRPs as well as exploring effective strategies and efficacious immunomodulatory methods to control bacterial diseases in this important species. This evidence concerns the gene PGLYRP1 and bacterial infectious disease.