Phylogenomic analyses reveal subclass Scuticociliatia as the sister group of subclass Hymenostomatia within class Oligohymenophorea

Feng, Jia‐Xun; Jiang, Chuanqi; Warren, Alan; Tian, Miao; Cheng, Jun; Liu, Guanglong; Xiong, Jie; Miao, Wei

doi:10.1016/j.ympev.2015.05.007

Cited by 33 publications

(33 citation statements)

References 61 publications

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“…Another very frequent relationship is that of the Hymenostomatia as sister taxon to the Sessilida (Li et al, 2008;Sun et al, 2011;Utz et al, 2010;Zhan et al, 2009). In contrast, our analyses show that Hymenostomatia is sister to Scuticociliatia, confirming the phylogenomic analyses of Feng et al (2015). In a morphological sense, the two subclasses have the same pattern of somatic kinetids and a very similar oral apparatus (i.e.…”

Section: Relationships Within Oligohymenophoreasupporting

confidence: 82%

“…In the BI analysis, Paramecium, the only member of the Peniculia is a sister taxon to Peritrichia a finding similar to that of Feng et al (2015). However, in the ML analysis the position of Paramecium is sister to the clade formed by the scuticociliates and hymenostomes.…”

Section: Relationships Within Oligohymenophoreamentioning

confidence: 79%

“…In the phylogenomic analysis of Feng et al (2015), Paramecium, the only member of the Peniculia grouped as the sister taxon to the Peritrichia with strong support. Contrary to these studies, here Paramecium groups as sister to the clade formed by the Scuticociliatia and Hymenostomatia.…”

Section: Relationships Within Oligohymenophoreamentioning

confidence: 99%

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Phylogenomics solves a long-standing evolutionary puzzle in the ciliate world: The subclass Peritrichia is monophyletic

Gentekaki

Kolísko

Gong

et al. 2017

Molecular Phylogenetics and Evolution

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Section: Relationships Within Oligohymenophoreasupporting

confidence: 82%

Section: Relationships Within Oligohymenophoreamentioning

confidence: 79%

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Phylogenomics solves a long-standing evolutionary puzzle in the ciliate world: The subclass Peritrichia is monophyletic

Gentekaki

Kolísko

Gong

et al. 2017

Molecular Phylogenetics and Evolution

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“…This, along with limited taxon sampling, has resulted in numerous examples of incongruence with the morphological data (e.g., Foissner et al., ; Li, Lyu, Li et al., ; Song, Wilbert, Li, & Zhang, ). To infer more robust phylogeny, multigene sequences (e.g., SSU rDNA, ITS1‐5.8S‐ITS2 and LSU rDNA or phylogenomic data) with increased sampling are now increasingly performed to study the evolutionary relationships of ciliates (Chen et al., ; Feng et al., ; Gentekaki, Kolisko, Gong, & Lynn, ; Hewitt et al., ; Huang, Chen, Song, & Berger, ). For example, based on single and multigene sequences, the convergent evolution of Urostylids and Uroleptids hypothesis was proposed to reconcile morphological and molecular classifications of urostylids and oxytrichids, with the assignment of species with zigzag midventral pattern and dorsomarginal kineties to the non‐oxytrichid dorsomarginalians (Foissner et al., ; Hewitt et al., ).…”

Section: Introductionmentioning

confidence: 99%

Multigene‐based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family

et al. 2018

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The Urostylida is a major taxon of hypotrichs with many unresolved evolutionary relationships. Due to incomplete or inaccurate character states and a paucity of morphogenetic data, the phylogeny of several taxa within urostylids is unresolved. Molecular phylogeny studies based on single gene (SSU rDNA) data may lead to conflict between morphological classification and SSU rDNA tree. In this work, 20 new sequences (SSU rDNA, ITS1‐5.8S‐ITS2 and LSU rDNA) of five genera of urostylids are provided to further investigate the phylogenetic relationships of this group. The main findings are as follows: (i) the establishment of Hemicycliostylidae, a novel family presently including Hemicycliostyla and Australothrix, is supported by both single gene and concatenated phylogenies; (ii) all molecular data support the exclusion of Eschaneustyla from the family Epiclintidae; (iii) Australothrix, Bergeriella and Thigmokeronopsis are distinctly separated in all gene trees although they share the character that each posterior streak generates the ventral row together with the midventral pair; (iv) compared with closely related genera in all trees, that is Metaurostylopsis and Apourostylopsis, Neourostylopsis is characterized by having more than three frontal cirri arranged in distinct or indistinct corona rather than the length of the midventral complex; (v) Hemicycliostyla and Pseudourostyla, two morphologically similar genera, do not form a monophyletic group in all molecular trees, suggesting that the bicorona, multiple marginal cirral rows and high numbers of dorsal kineties may result from convergent evolution; (vi) species of Bakuella fall into three separate clades in all trees suggesting that this genus needs to be split.

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“…In the last decade, molecular phylogenetic analyses based on small subunit ribosomal RNA gene (SSU rDNA) sequences have increasingly been used to investigate evolutionary relationships within the class Oligohymenophorea (Strüder-Kypke et al 2000;Shang et al 2003Shang et al , 2006Shang and Song 2005;Miao et al 2008Miao et al , 2009Gao et al 2010Gao et al , 2012Gao et al , 2013Gao et al , 2016Feng et al 2015;Xiong et al 2015;Zhao et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Morphological Redescription and SSU rDNA-based Phylogeny of Two Freshwater Ciliates, Uronema nigricans and Lembadion lucens (Ciliophora, Oligohymenophorea), with Discussion on the Taxonomic Status of Uronemita sinensis

Liu¹,

Li²,

Qu³

et al. 2017

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Abstract. The morphology and phylogeny of two poorly known species, Uronema nigricans (Müller, 1786) Florentin, 1901 and Lembadion lucens (Maskell, 1887) Kahl, 1931, were respectively collected from a eutrophic freshwater river in Shenzhen and an oligotrophic lake in Zhanjiang (both in southern China) and investigated using standard taxonomic methods. The sampled population of Uronema nigricans was characterized by a cell size of 30-40 μm × 12-20 μm in vivo, an elongated elliptical outline with a prominent apical plate, and 13-15 somatic kineties. The sampled population of Lembadion lucens was characterized by a cell size of 45-80 μm × 20-50 μm in vivo, 25-35 somatic kineties, five or six caudal kinetosomes with cilia about 20 μm in length, and a single right-positioned contractile vacuole. The small subunit ribosomal RNA gene (SSU rDNA) of these species was sequenced and compared with those of their congeners to reveal nucleotide differences. The phylogenetic trees showed that the Shenzhen population of Uronema nigricans clusters with two other sequences under the name of "Uronema nigricans" (which are possibly misidentified) and then groups with Uronemita sinensis (Pan et al., 2013) Liu et al., 2016 with full support. Phylogenetic analyses indicated that genus Lembadion is monophyletic with full support provided by both Bayesian inference and maximum likelihood algorithms. Based on analyses of morphological and sequence data, Uronemita sinensis may represent a new genus between Uronema and Uronemita.

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Phylogenomic analyses reveal subclass Scuticociliatia as the sister group of subclass Hymenostomatia within class Oligohymenophorea

Cited by 33 publications

References 61 publications

Phylogenomics solves a long-standing evolutionary puzzle in the ciliate world: The subclass Peritrichia is monophyletic

Phylogenomics solves a long-standing evolutionary puzzle in the ciliate world: The subclass Peritrichia is monophyletic

Multigene‐based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family

Morphological Redescription and SSU rDNA-based Phylogeny of Two Freshwater Ciliates, Uronema nigricans and Lembadion lucens (Ciliophora, Oligohymenophorea), with Discussion on the Taxonomic Status of Uronemita sinensis

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