title: [Role of intraspecific phenotypic diversity in the ecology of escherichia coli and staphylococcus aureus].
abstract: Investigating a complex of biological characteristics, including the inactivating ability of some antiinfectious resistance agents (lysozyme, complement, immunoglobulins, the bactericide component of interferon) in 229 and 257 E. coli and S. aureus strains, respectively, isolated from various sources has revealed the phenotypical polymorphism in the populations of these microorganisms, whose degree and specific features may be characterized by the indices of biological diversity and by the spectra of dominant biological profiles. Interpopulational variability in the bacteria was found to be determined by the specific features of their colonized ecotopes and to reflect the level of their adaptation to their inhabitance. There is a view of the organizational structure of the bacterial species as a whole complex of discrete populations of microorganisms, which include representatives of phenotypically different clone lines that occupy the optimum and some marginal econiches whose relation is supported by migration processes.
authors.affiliation: Depatment of Persistance of Microorganisms of Institute of Ecology and Genetic of Microorganisms, Orenburg.
authors.forename: O V
authors.initials: OV
authors.lastname: Bukhrin
authors.forename: V A
authors.initials: VA
authors.lastname: Gritsenko
authors.forename: D G
authors.initials: DG
authors.lastname: Deriabin
mesh_terms: D000220:Adaptation, Biological; D004463:Ecology; D004926:Escherichia coli / Q000235:genetics* / Q000472:pathogenicity; D006801:Humans; D010641:Phenotype; D013211:Staphylococcus aureus / Q000235:genetics* / Q000472:pathogenicity; D014774:Virulence