FSHR and infection: fshr-1 mutants show enhanced susceptibility to infection with P. aeruginosa, S. aureus, and E. faecalis. FSHR-1 acts in parallel with the p38/MAPK and regulates a subset of P. aeruginosa immune-response genes such as F56D6. 2, C17H12. 8, and F49F1. 6 [18] (Fig 1C).