Involvement of Trichoderma trichothecenes in the biocontrol activity and induction of plant defense-related genes.

ABSTRACT: Trichoderma species produce trichothecenes, most notably trichodermin and harzianum A (HA), by a biosynthetic pathway in which several of the involved proteins have significant differences in functionality compared to their Fusarium orthologues. In addition, the genes encoding these proteins show a genomic organization differing from that of the Fusarium tri clusters. Here we describe the isolation of Trichoderma arundinaceum IBT 40837 transformants which have a disrupted or silenced tri4 gene, a gene encoding a cytochrome P450 monooxygenase that oxygenates trichodiene to give rise to isotrichodiol, and the effect of tri4 gene disruption and silencing on the expression of other tri genes. Our results indicate that the tri4 gene disruption resulted in a reduced antifungal activity against B

SUBMITTER: Malmierca MG 

PROVIDER: S-EPMC3416386 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature