title: The cyanobiont in an Azolla fern is neither Anabaena nor Nostoc.
abstract: The cyanobacterial symbionts in the fern Azolla have generally been ascribed to either the Anabaena or Nostoc genera. By using comparisons of the sequences of the phycocyanin intergenic spacer and a fragment of the 16S rRNA, we found that the cyanobiont from an Azolla belongs to neither of these genera.
authors.affiliation: Molecular and Cellular Biology, University of New England, Armidale, NSW 2351, Australia.
authors.forename: Judith A
authors.initials: JA
authors.lastname: Baker
authors.forename: Barrie
authors.initials: B
authors.lastname: Entsch
authors.forename: David B
authors.initials: DB
authors.lastname: McKay
mesh_terms: D000595:Amino Acid Sequence; D017033:Anabaena / Q000235:genetics; D017124:Conserved Sequence; D000458:Cyanobacteria / Q000235:genetics*; D029624:Ferns / Q000382:microbiology*; D008969:Molecular Sequence Data; D009586:Nitrogen Fixation; D010798:Phycocyanin / Q000235:genetics; D010802:Phylogeny; D013559:Symbiosis
chemical_list: D010798:Phycocyanin