Antimicrobial Activity from Endophytic Fungi Arthrinium state of Apiospora montagnei Sacc. and Papulaspora immersa

Papulaspora immersa and Arthrinium state of Apiospora montagnei Sacc. were isolated from the roots of Smallanthus sonchifolius (yacon). The crude extracts from their cultures inhibited the growth of Staphylococcus aureus, Kocuria rhizophila, Pseudomonas aeruginosa and Escherichia coli. The more relevant results were observed in the ethyl acetate extract from P immersa against P aeruginosa (90 mu g/mL) and ethyl acetate extract from Arthrinium state of A montagnei Sacc. against P aeruginosa (160 mu g/mL). The two endophytic fungi isolated from yacon roots as well as their antimicrobial activity detected in the crude extracts cultures were being reported for the first time.