Screening for a novel Trichoderma vride strain highly producing cellulase via ultraviolet mutagenesis.

[Objective] The aim of this study was to find out a new Trichoderma vride K strain highly producing cellulase.[Method] Ultraviolet(UV) was used to induce mutagenesis on T.vride K and to select out a new Trichoderma vride strain highly producing cellulase from the first round and further selection.[Result] A new T.vride strain K6 with high yield of cellulase was obtained with the enzyme production amount of 1.39 times over that of starting strain K.This strain showed highest cellulase yield under the culture condition of 28 ℃ for 96 h.[Conclusion] The strain K6 selected out from induced mutation is endowed with better capacity of producing cellulase,which provides a new method for the utilization of straw.