Fottea 2018, 18(1):130-136 | DOI: 10.5507/fot.2017.023

Difference without distinction? Gaps in cyanobacterial systematics; when more is just too much

Petr Dvořák1, Eva Jahodářová1, Dale A. Casamatta2*, Petr Hašler1, Aloisie Poulíčková1
1 Department of Botany, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
2 Department of Biology, University of North Florida, 1 UNF Drive, Jacksonville, Florida, USA; *Corresponding author e-mail: dcasamat@unf.edu, phone: +1 904 620 1936

Cyanobacteria are amongst the most abundant, ubiquitous, ecologically and evolutionarily significant microbes on Earth. Unique among the Bacteria in their capacity to be identified using morphology, understanding the evolutionary relationships and describing the diversity of this lineage is both important and challenging. The advent of modern sequencing technology has proven a boon to those studying cyanobacterial systematics as it has provided copious amounts of sequence data (mainly of the 16S rRNA gene sequence). However, this influx of data has also led to taxonomic confusion and recognition of polyphyly in many genera. Thus, the purpose of this paper is to describe this apparent paradox of increasing data yet poor phylogenetic resolutions by employing the Poisson Tree Process (PTP) algorithm and to propose some ameliorative efforts.

Keywords: convergence, cyanobacteria, DNA database, metagenomics, phylogeny, species concept, taxonomy

Received: September 24, 2017; Accepted: November 7, 2017; Prepublished online: February 27, 2018; Published: March 31, 2018  Show citation

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Dvořák, P., Jahodářová, E., Casamatta, D.A., Hašler, P., & Poulíčková, A. (2018). Difference without distinction? Gaps in cyanobacterial systematics; when more is just too much. Fottea, 18(1), 130-136. doi: 10.5507/fot.2017.023
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