The role of extracellular chitinase in the biocontrol activity of Trichoderma
virens was examined using genetically manipulated strains of this fungus. The T.
virens strains in which the chitinase gene (cht42) was disrupted (KO) or
constitutively over-expressed (COE) were constructed through genetic
transformation. The resulting transformants were stable and showed patterns
similar to the wild-typ... hiện toàn bộ