Taxonomy of the Phacus Oscillans (Euglenaceae) and Its Close Relatives-Balancing Morphological and Molecular Features1

Karnkowska, Anna; Milanowski, Rafał; Kwiatowski, Jan; Zakryś, Bożena

doi:10.1111/j.1529-8817.2009.00765.x

Cited by 30 publications

(32 citation statements)

References 36 publications

(45 reference statements)

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“…, Karnkowska‐Ishikawa et al. ). In photosynthetic euglenoids, the sequence divergences of this gene showed broad ranges among interspecies within genera; 0.8%–8.0% in Strombomonas , 0.9%–22.0% in Trachelomonas , 2.6% in Colacium , 5.9%–16.9% in Euglena , and 0.9%–15.7% in Phacus .…”

Section: Discussionmentioning

confidence: 99%

“…According to Karnkowska‐Ishikawa et al. (), relatively small Phacus species displaying clearly distinguishable morphologies showed lower molecular divergence than Euglena species; the nr SSU rDNA sequence divergence among them ranged from 4.8% (between Phacus polytrophos ASW08018 and P. pusillus CCAC0096) to 0.9% (between P. oscillans and P. smulkowskianus ACOI1226). Molecular divergence between species within the genus Monomorphina, however, ranged from 13.8% (between M. pyrum SAG1244‐5 and M. aenigmatica CCAP1261/9) to 10.0% (between M. pyrum ACOI2583 and M. pseudopyrum CCAC0093).…”

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confidence: 99%

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Phylogenetic Reappraisal of the Genus Monomorphina (Euglenophyceae) Based on Molecular and Morphological Data

Kim

Shin

Triemer

2012

Journal of Phycology

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A morphological and molecular examination of the genus Monomorphina was conducted on 46 strains isolated mainly from Korea. The strains were divided into two types based on morphological data: Monomorphina aenigmatica and M. pyrum - like species. Phylogenetic analysis based on a combined data set of nuclear SSU and LSU and plastid SSU and LSU rDNA showed that the strains could be divided into eight clades: Clade A of M. aenigmatica, Clade B of the isolates (M. pyropsis) from Michigan, USA, Clade C of M. pseudopyrum, Clade D of the isolates (M. pyroria) from Bremen, Germany, Clade E of M. soropyrum, Clade F of M. pyriformis, Clade G of M. parapyrum, and Clade H of M. pyrum. Six of these clades came from strains that would be considered M. pyrum sensu Kosmala et Zakryś, one of which could be recognized as a traditional species (M. pyrum) and five were designated as new species; each species had unique molecular signatures at nr SSU rDNA helix 17 and 17' and spacer E23_14'-E23_15. The species of Monomorphina had a wide range of genetic diversity with interspecies sequence similarity of 85.6%-97.1% and intraspecies similarity of 96.4%-99.9%. Our results suggested that genetic diversity found in the M. pyrum complex justifies the recognition of a minimum of eight species within this genus, based on specific molecular signatures and gene divergence of the nr SSU rDNA sequences.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Phylogenetic Reappraisal of the Genus Monomorphina (Euglenophyceae) Based on Molecular and Morphological Data

Kim

Shin

Triemer

2012

Journal of Phycology

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“…The last 10 years have seen much taxonomic reclassification of these organisms, based on morphological and molecular data. As a result, the number of previously recognized species has been greatly reduced (Zakryś, 1997;Zakryś et al, 1997Zakryś et al, , 2002Zakryś et al, , 2004Shin & Triemer, 2004;Kosmala et al, 2005Kosmala et al, , 2007aKosmala et al, , 2007bKosmala et al, , 2009Karnkowska-Ishikawa et al, 2010, 2011, 2013 and some new species have been described based solely on molecular data (Kosmala et al, 2007a(Kosmala et al, , 2009. Among the green euglenoids, as is the case with many other groups of organisms, it has become increasingly difficult to find a new species that is clearly distinct morphologically.…”

Section: Introductionmentioning

confidence: 99%

A new photosynthetic euglenoid isolated in Poland: Euglenaria clepsydroides sp. nov. (Euglenea)

Zakryś

Karnkowska

Łukomska‐Kowalczyk

et al. 2013

European Journal of Phycology

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In this paper, we describe a new photosynthetic euglenoid species, Euglenaria clepsydroides Zakryś, sp. nov., found in Poland. A large population of this species exists in a few, small, eutrophic bodies of water inside the Masurian Landscape Park (covering a part of the Masurian Lake District in Poland). The characteristic and atypical (hourglass-like) cell shape sets it well apart from the other species that have been described up to now. This atypical cell shape has so far been observed only in three speciesLepocinclis constricta, Euglena undulata and Euglena gymnodinioides -whose other morphological characteristics, such as the number and morphology of chloroplasts, the lack of mucocysts, and nuclear SSU rDNA sequence data, exclude the possibility that they could be close relatives of Euglenaria clepsydroides. On the phylogenetic tree, the new species is situated within the Euglenaria clade. While it is a sister group of the clade that includes representatives of Euglenaria anabaena, the two species are clearly morphologically distinct.

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“…Five of the species they recognized were new. Their study builds on others who have used molecular sequence criteria to diagnose euglenid species (Marin et al, 2003;Kosmala et al, 2007Kosmala et al, , 2009Karnkowska-Ishikawa et al, 2010;Kim et al, 2010;Linton et al, 2010).…”

Section: Taxonomic Recognition Of Cryptic Speciesmentioning

confidence: 99%

Seven new species ofOculatella(Pseudanabaenales, Cyanobacteria): taxonomically recognizing cryptic diversification

Osorio‐Santos¹,

Pietrasiak²,

Bohunická³

et al. 2014

European Journal of Phycology

150

165

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A total of 27 strains of Oculatella were isolated, characterized and sequenced, and analysed phylogenetically with an additional environmental clone from the Atacama Desert and 10 strains isolated and sequenced by others. The strains were clearly separated based upon phylogenetic analyses conducted with a concatenated alignment of the 16S rRNA and 16S-23S ITS region of the ribosomal operons in the genus Oculatella. Differences in secondary structure of the conserved domains of the ITS region, as well as comparative analysis of P-distance among ITS regions, served to separate the strains into distinct taxonomic units. Seven new species of Oculatella were described, including four from arid to semi-arid soils (O. atacamensis, O. mojaviensis, O. coburnii, O. neakameniensis) and three from more mesic habitats, including a temperate lake (O. hafneriensis), a desert waterfall (O. cataractarum) and a Hawaiian sea cave (O. kauaiensis). The soil forms show statistically significant morphological differences, but the ranges overlap to a degree that they are not diagnosable by morphology, and these four cryptic species are characterized here using molecular characters. The more mesic species, including the type species from Mediterranean hypogea, O. subterranea, are all morphologically distinct from each other and from all four soil taxa. This report is the first to use solely molecular criteria to distinguish cryptic species of cyanobacteria.

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Taxonomy of the Phacus Oscillans (Euglenaceae) and Its Close Relatives-Balancing Morphological and Molecular Features1

Cited by 30 publications

References 36 publications

Phylogenetic Reappraisal of the Genus Monomorphina (Euglenophyceae) Based on Molecular and Morphological Data

Phylogenetic Reappraisal of the Genus Monomorphina (Euglenophyceae) Based on Molecular and Morphological Data

A new photosynthetic euglenoid isolated in Poland: Euglenaria clepsydroides sp. nov. (Euglenea)

Seven new species ofOculatella(Pseudanabaenales, Cyanobacteria): taxonomically recognizing cryptic diversification

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