Regulation of eurotium repens reproduction and secondary metabolite production

ABSTRACT

Eurotium repens [Anamorph Aspergillus repens] was isolated 1 from spoiled fruit. It reproduced sexually at different sucrose concentrations up to 50% [w/v]; water activity, 0.79. It reproduced asexually at high sucrose concentration 60% [w/v] water activity, 0.75. The concentrations of all detected amino acids were higher in the teleomorph than the anamorph except that of glycine, while alpha aminoadipic acid and alanine were detected in teleomorph only. The extracellular secondary metabolites produced by the teleomorph and anamorph stages were variable and different except epoxysuccinic acid and 2-pyruvylamino benzamide which were produced by the two stages. Glycine, arginine and calcium chloride unlike glutamic acid, aspartic acid and alanine, plays an important role in the induction of teleomorph stage formation at high sucrose concentration 60% [w/v]