EFFECT OF CARBON AND NITROGEN-SOURCES ON THE INTERACTION OF MYCOTOXIGENIC FUNGI AND MYCOTOXIN PRODUCTION

Effect of carbon and nitrogen sources on the interaction of three myco toxigenic fungi viz., Penicillium citrinum P. griseofulvum and Myrothe cium roridum and their effect on mycotoxin production was Investigated under co-culture conditions. Production of citrinin by P. citrinum wa s suppressed, when grown with other two fungi in a medium, containing lactose and dextrin. Cyclopiazonic acid production by P. griseofulvum was inhibited by other two fungi in lactose and starch media. M. rorid um did not produce roridin in a mixed culture. Preferential response t owards different nitrogen sources by three fungi was observed and amou nt of mycotoxin produced varied with nitrogen source present in the me dium. similar effect was observed on biomass production by the three f ungi under study.