title: [Variation in the nucleotide sequences of a 16S rRNA gene fragment from cyanobacteria from picoplankton from Lake Baika from natural samples and laboratory cultures].
abstract: Nucleotide sequences were determined for the 16S rRNA gene 5T-terminal regions of 29 strains of picoplankton cyanobacteria from the lake Baikal in Russia and four strains from the lake Constance (Bodensee) in Germany. Sequences of a 387-bp region of the gene of cultivated strains designated A, B, C, D, and E had only a few (1-3) substitutions as compared with the 3-27 sequence of the clones obtained earlier by cloning from a pooled sample of Baikalian winter picoplankton. The specific 4-33 sequence obtained earlier from a dominant species of Baikalian picoplankton was not found in cultivated cyanobacteria.
authors.affiliation: semenova@lin.irk.ru
authors.forename: E A
authors.initials: EA
authors.lastname: Semenova
authors.forename: K D
authors.initials: KD
authors.lastname: Kuznedelov
authors.forename: M A
authors.initials: MA
authors.lastname: Grachev
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D000458:Cyanobacteria / Q000235:genetics*; D005618:Fresh Water; D008969:Molecular Sequence Data; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D014871:Water Microbiology
chemical_list: D012336:RNA, Ribosomal, 16S