title: Dispersal and phylogenetic diversity of nonmarine picocyanobacteria, inferred from 16S rRNA gene and cpcBA-intergenic spacer sequence analyses.
abstract: More than 20 Synechococcus and Cyanobium isolates were obtained from central European subalpine lakes and sequenced for their 16S rRNA gene and part of the phycocyanin operon (cpc), specifically the intergenic spacer (IGS) between cpcB and cpcA, and corresponding flanking regions (cpcBA-IGS). Maximum-likelihood analyses revealed the existence of at least six to seven clusters of nonmarine picocyanobacteria within the picophytoplankton clade and support the conjecture of global dispersal for some closely related picocyanobacterial genotypes.
authors.affiliation: Institute for Limnology, Austrian Academy of Sciences, A-5310 Mondsee, Austria. crosbie@neb.com
authors.forename: Nicholas D
authors.initials: ND
authors.lastname: Crosbie
authors.forename: Matthias
authors.initials: M
authors.lastname: Pöckl
authors.forename: Thomas
authors.initials: T
authors.lastname: Weisse
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D000458:Cyanobacteria / Q000145:classification* / Q000235:genetics*; D017931:DNA Primers; D017753:Ecosystem; D005798:Genes, Bacterial / Q000235:genetics*; D014644:Genetic Variation; D007438:Introns; D008969:Molecular Sequence Data; D005810:Multigene Family; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D017422:Sequence Analysis, DNA
chemical_list: D001426:Bacterial Proteins; D017931:DNA Primers; D012336:RNA, Ribosomal, 16S