[The composition of a population of cloned cultures of revertant Vibrio cholerae L forms].

The process of L-transformation and L-transformed state duration have been studied for their effect on variability of main characters of revertant cultures of choleric vibrions L-forms at the population level with the use of cloned cultures of the choleric vibrions. The study was conducted on two strains of the choleric vibrion of the eltor biovar in different periods of storage in the L-transformed state (1, 3, 6 months). It has been revealed that characters of the species and biovar remained stable despite the influence of L-transforming agents.

[Genetic determination of the vibriocinogenicity trait in Vibrio cholerae of the El Tor biotype].

In two different strains of cholera vibrios two recA-dependent plasmids, pVib I (1.9-2.2 Md) and pVib II (5.

[Allomonads--a new group of microorganisms of the family Vibrionaceae. V. Taxonomic position of the allomonads based on a study of their DNA].

The DNA of Allomonas, a new group of microorganisms, has been studied to determine the taxonomic status of this group. In the nucleotide composition of the DNA of a typical representative of this group 57.4 mol % G + C have been revealed, which permits to sharply differentiate Allomonas from vibrios and Plesiomonas.

Allomonads - a new group of microorganisms of the Vibrionaceae family.

A total of 24 strains of microorganisms with basic marks relating them to the family of Vibrionaceae were isolated from human faeces, liquid sewage and waters of surface reservoirs contaminated with sewage. The study of biological, cultural and biochemical characteristics, determination of phenotypic similarity according to Adanson-Sneath, investigation of DNA composition and extent of DNA hybridization by the methods of gene taxonomy induced us to establish taxonomic independence of the discovered strains at the level of the genus Allomonas gen. nov.