Volatile metabolites produced by Trichoderma longibrachiatum and Trichoderma harzianum on the mycelial growth of Fusarium oxysporum f. sp. cubense

Abstract

The fusarium wilt is a disease of fundamental importance in the banana crop, being responsible
for high losses in production, and biological control is an alternative for its control. The
objective of this study was to evaluate the efficiency of the volatile metabolites produced by
Trichoderma longibrachiatum and Trichoderma harzianum on the mycelial growth of Fusarium
oxysporum f. sp. cubense. For the evaluation of volatile metabolites, the modified method of
Bharat et al. Petri dishes with BDA were placed one on top of the other, and a Trichoderma
spp. and a Fusarium disk on the top cover. The effect of free extracts of T. longibrachiatum
and T. harzianum cells on mycelial growth of Fusarium was evaluated. It was observed that the
metabolites produced by T. longibrachiatum and T. harzianum are able to inhibit the growth of
Fusarium oxysporum f. sp. cubense.