Abstract :
[en] A special cluster of filamentous, false-branched
cyanobacteria, isolated from littoral mat samples in coastal
lakes of the Larsemann Hills region (coll. by D. Hodgson)
was studied by a polyphasic approach. This morphotype
has several characters corresponding to the traditional
genera Leptolyngbya (morphology of trichomes), Pseudophormidium
(type of false branching) or Schizothrix
(occasional multiple arrangement of trichomes in the
sheaths). However, this cluster of strains is distinctly isolated
according to its phylogenetic position (based on 16S
rRNA gene sequences), and thus, a separate generic classification
is justified. The cytomorphology of this generic
entity is also characteristic. Therefore, a new genus
(Plectolyngbya with the type species P. hodgsonii) was
described.
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