The bacterivorous ciliate Cyclidium glaucoma isolated from a sewage treatment plant: Molecular and cytological descriptions for barcoding

Guggiari, Matteo; Peck, Robert K.

doi:10.1016/j.ejop.2007.11.004

Cited by 16 publications

(11 citation statements)

References 37 publications

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“…The clade containing Paratetrahymena and Cardiostomatella is a deeply divergent sister group to the large clade containing scuticociliates (0.52 BI, 31% ML, 22% MP). Cyclidium porcatum and Cyclidium glaucoma occupy anomalous positions based on their morphology (Esteban et al 1993; Guggiari and Peck 2008), being basal to other pleuronematid scuticociliates and distant from Cyclidium plouneouri and one another. Scuticociliates, Sathrophilus , and the Paratetrahymena – Cardiostomatella clade form a poorly supported group (0.50 BI, 36% ML, 26% MP) that appears to be a sister group (0.51 BI, 43% ML, 25% MP) to the single representative of the subclass Astomatia.…”

Section: Resultsmentioning

confidence: 99%

Description of Paratetrahymena parawassi n. sp. using Morphological and Molecular Evidence and a Phylogenetic Analysis of Paratetrahymena and Other Taxonomically Ambiguous Genera in the Order Loxocephalida (Ciliophora, Oligohymenophorea)

Zhang

Fan

Clamp

et al. 2010

J Eukaryotic Microbiology

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The marine scuticociliate Paratetrahymena parawassi n. sp. is described on the basis of morphology, especially infraciliature, and the sequence of its small subunit (SSU) rRNA gene to become the second known member of its genus. Paratetrahymena and other ciliates in the order Loxocephalida possess a mixture of morphological and morphogenetic features characteristic of the subclasses Hymenostomatia and Scuticociliatia. Accordingly, we used SSU rRNA sequences to analyze the phylogeny of Paratetrahymena and three other loxocephalid genera. Paratetrahymena and Cardiostomatella vermiformis formed a moderately well-supported clade that diverged at a deep level from all other scuticociliates, supporting separation of loxocephalids from other scuticociliates as a suprafamilial taxon. Sathrophilus holtae was a sister taxon to Paratetrahymena and Cardiostomatella in a poorly supported, unresolved relationship; nevertheless, association of all three genera into a single clade was supported by an approximately unbiased (AU) test. Any association of these genera singly or as a group with the Hymenostomatia was rejected decisively by AU tests and by a complete absence in the loxocephalids of the unique nucleotide identities that distinguish hymenostomes. Therefore, the morphological and morphogenetic similarities of loxocephalids to hymenostomes may be plesiomorphies, and the conflicting mix of scuticociliate and hymenostome characteristics seen in loxocephalids may result from differing rates of character evolution. Dexiotrichides pangi and Urocentrum, which is currently classified as a peniculid, formed a small clade that associated with hymenostomes and peritrichs. Monophyly of the Loxocephalida with Dexiotrichides and/or Urocentrum included was not rejected by AU; however, inclusion of Urocentrum in the Peniculia was rejected by AU tests. A hypothesis is offered to explain the lack of resolution of loxocephalid ciliates and Urocentrum in phylogenetic trees, namely that their phylogenetic positions are influenced by a combination of heterogeneous data and long-branch attraction caused by poor representation of taxa in analyses. The well-known genus Cyclidium, a member of the order Pleuronematida, was revealed to be polyphyletic as a byproduct of our analyses of loxocephalids. In particular, Cyclidium porcatum appears to fall outside the clade containing typical members of the subclass Scuticociliatia and thus invites investigation as a possible member of the order Loxocephalida.

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Section: Resultsmentioning

confidence: 99%

Description of Paratetrahymena parawassi n. sp. using Morphological and Molecular Evidence and a Phylogenetic Analysis of Paratetrahymena and Other Taxonomically Ambiguous Genera in the Order Loxocephalida (Ciliophora, Oligohymenophorea)

Zhang

Fan

Clamp

et al. 2010

J Eukaryotic Microbiology

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“…Most of the plagiopylid-like sequences were affiliated to the hydrogenosome-bearing genera Trimyema and Epalxella, described from submarine hydrothermal vents and a meromictic alpine lake (Baumgartner et al 2002;Stoeck et al 2007). The Cyclidiumrelated phylotypes clustered together with the anaerobic Cyclidium porcatum (Clarke et al 1993;Guggiari and Peck 2008) and with other environmental sequences originating from anoxic habitats (e.g. Framvaren Fjord, Cariaco Basin).…”

Section: Black Seamentioning

confidence: 89%

“…The Cyclidium ‐related phylotypes clustered together with the anaerobic Cyclidium porcatum (Clarke et al. ; Guggiari and Peck ) and with other environmental sequences originating from anoxic habitats (e.g. Framvaren Fjord, Cariaco Basin).…”

Section: Black Seamentioning

confidence: 95%

Ciliates along Oxyclines of Permanently Stratified Marine Water Columns

Edgcomb

Pachiadaki

2014

J Eukaryotic Microbiology

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“…The COI gene is on average 2000-2200 nucleotides long. The characteristic feature of ciliate COI is a 108 amino acid insert in the first half of the gene, present in all species sequenced so far (Pritchard et al, 1986;Ziaie & Suyama, 1987;Pritchard et al, 1990b;Burger et al, 2000;Brunk et al, 2003;Barth et al, 2006;Lynn & Strüder-Kypke, 2006;Snoke et al, 2006;Chantangsi et al, 2007;Guggiari & Peck, 2008;Przyboś et al, 2008;Catania et al, 2009;Gentekaki & Lynn, 2009;Segade et al, 2009). This insert is located in the so-called barcoding region, used to discriminate species based on sequence divergence (Hebert et al, 2003a(Hebert et al, , 2003b.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the mitochondrial cytochromecoxidase subunit I (COI) gene in ciliates (Alveolata, Ciliophora) and evaluation of its suitability as a biodiversity marker

Strüder‐Kypke

Lynn

2010

Systematics and Biodiversity

110

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The bacterivorous ciliate Cyclidium glaucoma isolated from a sewage treatment plant: Molecular and cytological descriptions for barcoding

Cited by 16 publications

References 37 publications

Description of Paratetrahymena parawassi n. sp. using Morphological and Molecular Evidence and a Phylogenetic Analysis of Paratetrahymena and Other Taxonomically Ambiguous Genera in the Order Loxocephalida (Ciliophora, Oligohymenophorea)

Description of Paratetrahymena parawassi n. sp. using Morphological and Molecular Evidence and a Phylogenetic Analysis of Paratetrahymena and Other Taxonomically Ambiguous Genera in the Order Loxocephalida (Ciliophora, Oligohymenophorea)

Ciliates along Oxyclines of Permanently Stratified Marine Water Columns

Comparative analysis of the mitochondrial cytochromecoxidase subunit I (COI) gene in ciliates (Alveolata, Ciliophora) and evaluation of its suitability as a biodiversity marker

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