Time course analysis of chitinase production in S. peucetius, SPVI, and exconjugants SPD1 and SPD2 in NDMC. □, S. peucetius; ▵, S. peucetius(pPVD1) (SPD1); ▪, SPVI; ▴, S. peucetius(pPVD2) (SPD2); ⋄, S. peucetius(pSET152). The error bars indicate standard deviations.