Original paper
Morphological and molecular characterisation of a stigonematalean cyanobacterium isolated from a Spanish cave
Hoffmann, Lucien; Gugger, Muriel; Asencio-Martinez, Atonia D.
Algological Studies/Archiv für Hydrobiologie, Supplement Volumes No. 109 (2003), p. 259 - 265
published: Aug 1, 2003
DOI: 10.1127/1864-1318/2003/0109-0259
ArtNo. ESP142014800004, Price: 29.00 €
Abstract
A heterocystous cyanobacterium was isolated from a Spanish cave. It is characterised by a heterotrichous habit, the presence of hormocysts and the oblique divisions giving rise to Y-shaped true branchings. The phylogenetic tree constructed with a distance method on the nearly complete 16S rRNA gene shows that the isolate belongs to the group of heterocystous cyanobacteria. It does, however, not cluster with so far published stigonematalean sequences, but with a sequence of the false-branching genus Scytonema. The taxonomic and phylogenetic position of the isolate is discussed.
Keywords
cave • cyanobacteria • cyanophyceae • morphology • phylogeny • 16s rrna gene sequence • stigonematales • taxonomy