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Phylogenetic position of Geitleribactron purpureum (Synechococcales, Cyanobacteria / Cyanophyceae) and its implications for the taxonomy of Chamaesiphonaceae and Leptolyngbyaceae
- Source :
- Fottea. 16:104-111
- Publication Year :
- 2016
- Publisher :
- Palacky University Olomouc, 2016.
-
Abstract
- Over the last decades, the taxonomy of cyanobacteria has been considerably improved and restructured due to the increase in data output from molecular phylogeny. Recently, a new protocol was developed that enables reliable sequencing of 16S rRNA genes in cultivation-resistant cyanobacteria using analysis of single cells, filaments, or colonies. In the current study, we examined a sample of a heteropolar unicellular cyanobacterium, Geitleribactron purpureum, from the holotype material (deep epilithon of Lake Tovel, Western Dolomites, Italy). We isolated and purified single colonies of G. purpureum, and subjected them to direct PCR and 16S rRNA gene sequencing. We obtained a congruent set of sequences that formed a unique, isolated cyanobacterial lineage, showing phylogenetic clustering among simple filamentous genera of the family Leptolyngbyaceae. We provide evidence for deep polyphyly in Chamaesiphonaceae, and suggest that Geitleribactron should be re-classified in the Leptolyngbyaceae.
- Subjects :
- 0106 biological sciences
Cyanobacteria
Synechococcales
Phylogenetic tree
010604 marine biology & hydrobiology
Holotype
Plant Science
Biology
biology.organism_classification
16S ribosomal RNA
010603 evolutionary biology
01 natural sciences
Polyphyly
Botany
Molecular phylogenetics
Taxonomy (biology)
Subjects
Details
- ISSN :
- 18054927 and 18025439
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Fottea
- Accession number :
- edsair.doi...........75288453f5c7277ad734ed4b6f08f8f4