The utilization of L-tryptophan as nitrogen source by Fusarium culmorum, Aspergillus nidulans, and Penicillium italicum

Fusarium culmorum reached a maximum dry weight of 60 mg/25 ml, and indolelactic acid (ILA) was found in the culture filtrates during the first 8 days of incubation. Only traces of ILA were detected in the filtrates of Aspergillus nidulans and none in those of Penicillium italicum both of which reached a dry weight of about 90 mg/25 ml.