Two novel marine Frontonia species, Frontonia mengi spec. nov. and Frontonia magna spec. nov. (Protozoa; Ciliophora), with notes on their phylogeny based on small-subunit rRNA gene sequence data

Fan, Xinpeng; Chen, Xiangrui; Song, Weibo; Al-Rasheid, Khaled A. S.; Warren, Alan

doi:10.1099/ijs.0.024794-0

Cited by 20 publications

(13 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The monophyly of subclass Peniculia demonstrated by previous works (Chen et al., 2014; Fan et al., 2011; Fan et al., 2013; Fokin et al., 2006; Gao et al., 2008; Pan, Gao, et al., 2013; Pan, Liu, et al., 2013; Xu et al, 2018) was confirmed by our phylogenetic analyses (both 18S rDNA‐ and COI‐based phylogenies). Moreover, coherently with previous studies on Peniculia, they pointed out that a monophyly of Frontonia is not supported by molecular data in the 18S rDNA‐ (Chen et al., 2014; Fan et al., 2011, 2013; Fokin et al., 2006; Gao et al., 2008, 2016; Ong'ondo et al., 2013; Pan, Gao, et al., 2013; Pan, Liu, et al., 2013; Zhao et al., 2016; Xu et al, 2018) and COI‐based phylogenies (Zhao et al., 2016).…”

Section: Discussionsupporting

confidence: 88%

Phylogeny of Neobursaridium reshapes the systematics of Paramecium (Oligohymenophorea, Ciliophora)

et al. 2020

View full text Add to dashboard Cite

The subclass Peniculia (Oligohymenophorea, Intramacronucleata) is one of the most known groups of the phylum Ciliophora, being composed by very notorious representatives, such as Paramecium and Frontonia. Nevertheless, phylogenetic relationships among genera within this subclass are still far from being resolved. Moreover, for several members of the group the characterization by molecular markers is still lacking, such as for Wenrichia, Clathrostoma, Paraclathrostoma, Didieria and, to date, also for Neobursaridium. The finding of one strain of Neobursaridium gigas from India led to the first molecular characterization of this uncommonly sampled ciliate. The 18S rDNA sequence and the COI sequence were obtained and used for phylogenetic analyses. Moreover, the partial mitochondrial genome of N. gigas was sequenced, annotated and employed for phylogenomics analysis. To increase the sampling effort for the Paramecium clade, several newly obtained 18S rDNA sequences of parameciids are herein presented. Unexpectedly, the inclusion of N. gigas's molecular data in phylogenetics/phylogenomics analyses did not help to solve the complex evolution relationships inside Peniculia. Conversely, it raised new and intriguing questions about Paramecium phylogeny, since N. gigas clustered inside Paramecium clade as sister species of Paramecium bursaria in all the performed analyses. A critical revision of past and present data led to rename N. gigas as Paramecium gigas (Balech, 1941) comb. nov., and triggered the revision of genus Paramecium, with the proposal of the new subgenus Gigaparamecium subgen. nov. Hypotheses on the evolution of giant morphologies in ciliates are also discussed.

show abstract

Section: Discussionsupporting

confidence: 88%

Phylogeny of Neobursaridium reshapes the systematics of Paramecium (Oligohymenophorea, Ciliophora)

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The peniculians are characterized by their three oral polykinetids aligned longitudinally in the oral cavit 5 19 33 71 72 73 . The present phylogenetic analyses are consistent with previous studies in recovering the peniculians as a group that occupies a basal position within the olighymenophorean assemblage and is most closely related to the hymenostomatians and peritrichs 74 75 .…”

Section: Discussionmentioning

confidence: 99%

The All-Data-Based Evolutionary Hypothesis of Ciliated Protists with a Revised Classification of the Phylum Ciliophora (Eukaryota, Alveolata)

Gao

Warren

Zhang

et al. 2016

Sci Rep

Self Cite

301

229

View full text Add to dashboard Cite

The phylum Ciliophora plays important roles in a wide range of biological studies. However, the evolutionary relationships of many groups remain unclear due to a lack of sufficient molecular data. In this study, molecular dataset was expanded with representatives from 55 orders and all major lineages. The main findings are: (1) 14 classes were recovered including one new class, Protocruziea n. cl.; (2) in addition to the two main branches, Postciliodesmatophora and Intramacronucleata, a third branch, the Mesodiniea, is identified as being basal to the other two subphyla; (3) the newly defined order Discocephalida is revealed to be a sister clade to the euplotids, strongly suggesting the separation of discocephalids from the hypotrichs; (4) the separation of mobilids from the peritrichs is not supported; (5) Loxocephalida is basal to the main scuticociliate assemblage, whereas the thigmotrichs are placed within the order Pleuronematida; (6) the monophyly of classes Phyllopharyngea, Karyorelictea, Armophorea, Prostomatea, Plagiopylea, Colpodea and Heterotrichea are confirmed; (7) ambiguous genera Askenasia, CyclotrichiumParaspathidium and Plagiocampa show close affiliation to the well known plagiopyleans; (8) validity of the subclass Rhynchostomatia is supported, and (9) the systematic positions of Halteriida and Linconophoria remain unresolved and are thus regarded as incertae sedis within Spirotrichea.

show abstract

“…Lynn (2008) divided the ciliate class Oligohymenophorea into six subclasses: Scuticociliatia, Peritrichia, Hymenostomatia, Peniculia, Apostomatia and Astomatia. Over the past 50 years, various studies have been carried out on the morphology, morphogenetic and phylogeny of this class, especially of the two main groups, scuticociliates and hymenostomes (Small 1967; Corliss 1979; Lynn & Small 2002; Fan et al. 2009, 2011; Miao et al.…”

Section: Introductionmentioning

confidence: 99%

Molecular evolution of Cinetochilum and Sathrophilus (Protozoa, Ciliophora, Oligohymenophorea), two genera of ciliates with morphological affinities to scuticociliates

Zhang¹,

Miao²,

Strüder‐Kypke³

et al. 2011

Zoologica Scripta

Self Cite

View full text Add to dashboard Cite

Song, W. (2011). Molecular evolution of Cinetochilum and Sathrophilus (Protozoa, Ciliophora, Oligohymenophorea), two genera of ciliates with morphological affinities to scuticociliates. -Zoologica Scripta, 40, 317-325. The ciliate order Loxocephalida sensu Li et al. (2006) has been considered to be systematically uncertain within the subclass Scuticociliatia. Loxocephalids display mixed morphological features and morphogenetic patterns that are found in two different oligohymenophorean subclasses: scuticociliates and hymenostomes. To reveal their phylogenetic positions, molecular information on this group is urgently needed but still inadequate. In the present study, we have sequenced the small subunit rRNA gene of two newly described loxocephalids, Cinetochilum ovale Gong & Song 2008; and Sathrophilus planus Fan et al. 2010; which have never been discussed based on molecular analysis. Results show: (i) all phylogenetic trees are nearly identical in placing Cinetochilum closest to the subclass Apostomatia and form a monophyletic group divergent from the typical scuticociliates, (ii) the genus Sathrophilus, together with Anoplophrya, a poorly known Astomatia, forms a peripheral branch separated from the scuticociliatian assemblage and (iii) the affiliation of the loxocephalid genera sensu Li et al. (2006) is not confirmed due to a dispersion in four deeply diverged clades. In addition, the polyphyly of the genus Cyclidium, shown in previous studies, is confirmed by our phylogenetic analyses and supported by the approximately unbiased test based on the new database in this work.

show abstract

Two novel marine Frontonia species, Frontonia mengi spec. nov. and Frontonia magna spec. nov. (Protozoa; Ciliophora), with notes on their phylogeny based on small-subunit rRNA gene sequence data

Cited by 20 publications

References 15 publications

Phylogeny of Neobursaridium reshapes the systematics of Paramecium (Oligohymenophorea, Ciliophora)

Phylogeny of Neobursaridium reshapes the systematics of Paramecium (Oligohymenophorea, Ciliophora)

The All-Data-Based Evolutionary Hypothesis of Ciliated Protists with a Revised Classification of the Phylum Ciliophora (Eukaryota, Alveolata)

Molecular evolution of Cinetochilum and Sathrophilus (Protozoa, Ciliophora, Oligohymenophorea), two genera of ciliates with morphological affinities to scuticociliates

Contact Info

Product

Resources

About