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[Comparative study of a group of mutant strains of Trichoderma viride, producer of cellulolytic enzymes].

In the course of selection of Trichoderma viride, the producer of cellulolytic enzymes, the group of mutant strains characterized by a higher level of productivity are isolate. It is shown that the isolated mutants possess a number of common but differing them from original strains characters. These include: the small size of colonies ("dwarfs"), a lower capacity to carry out some biochemical reactions, and increased development rate and a higher resistance to lethal effect of nitrosoguanidine and nitrosoethyl urea. The data obtained indicate that in the series of populations of successively isolated mutants observed the stabilization of variability of the levels of C1 enzyme synthesis takes place. It is also shown that, unlike original cultures, the populations of mutant strains are characterized by a higher variability of Cx enzyme activity levels as compared with C1.