White rot fungi, breeding method and use thereof

From the paper

Abstract

The invention relates to Trametes Versicolor YS-L613 and a breeding method and application thereof. The Trametes Versicolor YS-L613 is prepared by the method through mutation breeding. The breeding method is to take Trametes Versicolor as a starting strain, adopt composite mutation breeding technology which combines UV, 60 CO, ultraviolet rays, nitrosoguanidine, ion implantation and microwave treatment, and breed the YS-L613 strain for high-yield production of laccase. The invention performs breeding operation through physiochemical treatment methods such as ion implantation, the ultraviolet rays and mutagen, finally obtains the YS-L613 strain for high-yield production of the laccase, and adopts experimental automatic control technology, strain fermentation control technology and strain extraction technology to develop laccase products. As proved by experiments of the laccase in pulp bleaching, fiber modification and pulp deinking, utilization of the laccase in the paper-making industry can improve the quality of paper, reduce environmental pollution and save the cost.