Seeking the true Oscillatoria

Mühlsteinová, Radka; Hauer, Tomáš; Ley, Paul De; Pietrasiak, Nicole

doi:10.23855/preslia.2018.151

Cited by 22 publications

(8 citation statements)

References 30 publications

(41 reference statements)

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“…A recent methodological taxonomic study proposed the strain O. princeps CCALA 1115 as an epitype best matching the original description (Mühlsteinová et al. 2018). 16S rRNA gene phylogeny reconstructed a clearly defined clade of several strains of O. princeps , accompanied with O. kawamurae with a congruent morphology.…”

Section: Resultsmentioning

confidence: 66%

“…1, 3, 5.14, S1) reconstructed an isolated monophyletic clade containing a prominent group of both traditionally and lately described genera, including the recently established epitype of Oscillatoria (Mühlsteinová et al. 2018). Another marine benthic group of Oscillatoria ‐like taxa is phylogenetically distant and belongs to Coleofasciculales (see below).…”

Section: Resultsmentioning

confidence: 99%

“…More specifically, the epitype of Oscillatoria was proposed (Mühlsteinová et al. 2018), Komárek et al. (2020) partly addressed the polyphyly in Synechococcus , and Gama et al.…”

Section: Resultsmentioning

confidence: 99%

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An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis

Strunecký

Ivanova

Mareš

2023

Journal of Phycology

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Cyanobacterial taxonomy is facing a period of rapid changes thanks to the ease of 16S rRNA gene sequencing and established workflows for description of new taxa. Since the last comprehensive review of the cyanobacterial system in 2014 until 2021, at least 273 species in 140 genera were newly described. These taxa were mainly placed into previously defined orders and families although several new families were proposed. However, the classification of most taxa still relied on hierarchical relationships inherited from the classical morphological taxonomy. Similarly, the obviously polyphyletic orders such as Synechococcales and Oscillatoriales were left unchanged. In this study, the rising number of genomic sequences of cyanobacteria and well‐described reference strains allowed us to reconstruct a robust phylogenomic tree for taxonomic purposes. A less robust but better sampled 16S rRNA gene phylogeny was mapped to the phylogenomic backbone. Based on both these phylogenies, a polyphasic classification throughout the whole phylum of Cyanobacteria was created, with ten new orders and fifteen new families. The proposed system of cyanobacterial orders and families relied on a phylogenomic tree but still employed phenotypic apomorphies where possible to make it useful for professionals in the field. It was, however, confirmed that morphological convergence of phylogenetically distant taxa was a frequent phenomenon in cyanobacteria. Moreover, the limited phylogenetic informativeness of the 16S rRNA gene, resulting in ambiguous phylogenies above the genus level, emphasized the integration of genomic data as a prerequisite for the conclusive taxonomic placement of a vast number of cyanobacterial genera in the future.

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Section: Resultsmentioning

confidence: 66%

Section: Resultsmentioning

confidence: 99%

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An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis

Strunecký

Ivanova

Mareš

2023

Journal of Phycology

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“…It is The copyright holder for this preprint this version posted April 10, 2021. ; https://doi.org/10.1101/2021.04.09.439031 doi: bioRxiv preprint Hentschke et al 2021 18 (Komárek et al, 2013) and cannot be surely assigned to this genus, because of limited available data (only one photo and not conclusive phylogeny in Sharp et al, 2009). Many other papers show Lyngbya as a polyphyletic genus (Engene et al, 2018;Caires et al, 2018b;Mühlsteinová et al, 2018) and to identify the true Lyngbya clade, a robust revision of the genus is needed. This has been done, for example, by Mühlsteinová et al (2018) to establish the true Oscillatoria clade.…”

Section: Discussionmentioning

confidence: 99%

“…Many other papers show Lyngbya as a polyphyletic genus (Engene et al, 2018;Caires et al, 2018b;Mühlsteinová et al, 2018) and to identify the true Lyngbya clade, a robust revision of the genus is needed. This has been done, for example, by Mühlsteinová et al (2018) to establish the true Oscillatoria clade. According to this, we didn´t include the genus Lyngbya in Zarkiaceae and chose to consider the Lyngbya cf.…”

Section: Discussionmentioning

confidence: 99%

Establishment of the family Zarkiaceae (Oscillatoriales, Cyanobacteria) and description of the new marine genera Zarkia (Zarkiaceae, Oscillatoriales) and Romeriopsis (Leptolyngbyaceae, Synechococcales), from northern Portugal

Hentschke

Pinheiro

Ramos

et al. 2021

Preprint

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The morphology, 16S rRNA gene phylogeny and the 16S-23S rRNA gene ITS secondary structures of three strains of marine Cyanobacteria, isolated from inter- and subtidal environments from north Portugal were studied, resulting in the description of Zarkia subtidalensis gen. et. sp. nov. (Zarkiaceae fam. nov.) and Romeriopsis marina gen. et. sp. nov (Leptolyngbyaceae). No diacritical morphological characters were found either for the new family or for the new genera. The 16S rRNA gene Maximum Likelihood and Bayesian phylogenies supported that Zarkia and Zarkiaceae are members of the Oscillatoriales, positioned close to Microcoleaceae genera, but distant from Microcoleus. Romeriopsis is positioned within the Leptolyngbyaceae and is closely related to Alkalinema. The secondary structures of the D1-D1′, Box B, V2 and V3 helices corroborate with the phylogenetic results. Furthermore, our study supports previous observations of polyphyletic Oscillatoriales families and reinforces the need for their taxonomical revision.

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Seeking the true Oscillatoria

Cited by 22 publications

References 30 publications

An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis

An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis

Establishment of the family Zarkiaceae (Oscillatoriales, Cyanobacteria) and description of the new marine genera Zarkia (Zarkiaceae, Oscillatoriales) and Romeriopsis (Leptolyngbyaceae, Synechococcales), from northern Portugal

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