title: [Cytological study of early stages of regeneration of protoplasts of fungi and Streptomyces].
abstract: Early stages of Penicillium chrysogenum 51 and Streptomyces lividans 66 protoplast regeneration on solid media were studied microscopically under conditions of microcompartments. It was shown that at the early regeneration stages there were both rapid reversion into the mycelial form and a retarded one. In P. chrysogenum retarded regeneration resulted in formation of hypha-like structures or protoplast breaking into fragments of various sizes. Some of the fragments restored the cell walls and mycelial organization whereas the others lysed. As a result of the breaking and compartmentalization of the viable areas one protoplasts formed several centers of P. chrysogenum colony reversion. Retarded regeneration of protoplasts in S. lividans 66 resulted in their growth and multiplication in the protoplast-like L-form. On media with penicillin, glycine and horse serum there were isolated colonies of S. lividans L-forms subject to passages or reversion depending on the medium composition.
mesh_terms: D002473:Cell Wall / Q000648:ultrastructure; D003470:Culture Media; D010407:Penicillium / Q000648:ultrastructure*; D010408:Penicillium chrysogenum / Q000502:physiology / Q000648:ultrastructure*; D011523:Protoplasts / Q000502:physiology / Q000648:ultrastructure*; D013302:Streptomyces / Q000502:physiology / Q000648:ultrastructure*; D013997:Time Factors
chemical_list: D003470:Culture Media
vernacular_title: Tsitologicheskoe izuchenie rannikh étapov regeneratsii protoplastov gribov i streptomitsetov.