Molecular phylogeny of parabasalids with emphasis on the order Cristamonadida and its complex morphological evolution

Noda, Shohei; Mantini, Cléa; Bordereau, Christian; Kitade, Osamu; Dolan, Michael F.; Viscogliosi, Éric; Ohkuma, Moriya

doi:10.1016/j.ympev.2009.03.011

Cited by 24 publications

(56 citation statements)

References 33 publications

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“…The two sequences from Stephanonympha nelumbium from Cryptotermes domesticus, its type host, group together with only a few polymorphisms. However, the other two species of this genus, from Neotermes koshuensis and Cryptotermes cavifrons, branch separately in our analyses and in previous analyses (Gerbod et al, 2002;Noël et al, 2007;Noda et al, 2009;Cepicka et al, 2010). This separation is not supported, so it remains possible that with deeper taxon sampling, the genus Stephanonympha may yet resolve itself as monophyletic (Lecointre et al, 1993;Heath et al, 2008), although there is no indication of this from current data.…”

Section: Phylogeny Of the Family Calonymphidaesupporting

confidence: 54%

“…3). Previously published SSU and multigene phylogenies agree that this group is a part of the order Cristamonadida, along with the devescovinids, lophomonads and members of the genus Coronympha, and branches sister to a clade of members of the genera Koruga and Deltotrichonympha from the deepest-branching termite, Mastotermes darwiniensis (Gerbod et al, 2002;Noël et al, 2007;Noda et al, 2009;Cepicka et al, 2010). While the monophyly of the cristamonads in general and calonymphids specifically are both well established, relationships among and within calonymphid genera are less certain and in some cases the monophyly of genera is untested or questionable.…”

Section: Phylogeny Of the Family Calonymphidaementioning

confidence: 88%

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Molecular and morphological analysis of the family Calonymphidae with a description of Calonympha chia sp. nov., Snyderella kirbyi sp. nov., Snyderella swezyae sp. nov. and Snyderella yamini sp. nov.

Gile

James

Scheffrahn

et al. 2011

International Journal of Systematic and Evolutionary Microbiology

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Calonymphids are a group of multinucleate, multiflagellate protists belonging to the order Cristamonadida (Parabasalia) that are found exclusively in the hindgut of termites from the family Kalotermitidae. Despite their impressive morphological complexity and diversity, few species have been formally described and fewer still have been characterized at the molecular level. In this study, four novel species of calonymphids were isolated and characterized: Calonympha chia and Snyderella yamini spp. nov., from Neotermes castaneus and Calcaritermes nearcticus from Florida, USA, and Snyderella kirbyi and Snyderella swezyae, spp. nov., from Calcaritermes nigriceps and Cryptotermes cylindroceps from Colombia. Each of these species was distinguished from its congeners by residing in a distinct host and by differences at the molecular level. Phylogenetic analyses of small subunit (SSU) rDNA indicated that the genera Calonympha and Stephanonympha were probably not monophyletic, though the genus Snyderella, previously only represented by one sequence in molecular analyses, appeared with these new data to be monophyletic. This was in keeping with the traditional evolutionary view of the group in which the morphology of the genus Snyderella is considered to be derived, while that of the genus Stephanonympha is ancestral and therefore probably plesiomorphic.

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Section: Phylogeny Of the Family Calonymphidaesupporting

confidence: 54%

Section: Phylogeny Of the Family Calonymphidaementioning

confidence: 88%

Molecular and morphological analysis of the family Calonymphidae with a description of Calonympha chia sp. nov., Snyderella kirbyi sp. nov., Snyderella swezyae sp. nov. and Snyderella yamini sp. nov.

Gile

James

Scheffrahn

et al. 2011

International Journal of Systematic and Evolutionary Microbiology

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“…Because of a high level of sequence divergence of the SSU rRNA gene across parabasalid lineages, a lack of resolution and possible tree-construction artifacts have occurred, even though a large number of taxa have been investigated [26], [39], [43], [46]. To overcome this drawback, multiple protein-encoding genes such as glyceraldehyde-3-phosphate dehydrogenase (GAPDH), enolase, and tubulins have been examined [51]–[57].…”

Section: Introductionmentioning

confidence: 99%

“…Among these indicators, GAPDH sequences that contain a greater phylogenetic signal have given well-resolved trees largely congruent with the SSU rRNA gene phylogeny. Consequently, the GAPDH sequences have been used gradually in phylogenetic reconstructions, and the data of many important taxa have accumulated to cover a wide range of parabasalid diversity [46], [47].…”

Section: Introductionmentioning

confidence: 99%

Molecular Phylogeny and Evolution of Parabasalia with Improved Taxon Sampling and New Protein Markers of Actin and Elongation Factor-1α

et al. 2012

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BackgroundInferring the evolutionary history of phylogenetically isolated, deep-branching groups of taxa—in particular determining the root—is often extraordinarily difficult because their close relatives are unavailable as suitable outgroups. One of these taxonomic groups is the phylum Parabasalia, which comprises morphologically diverse species of flagellated protists of ecological, medical, and evolutionary significance. Indeed, previous molecular phylogenetic analyses of members of this phylum have yielded conflicting and possibly erroneous inferences. Furthermore, many species of Parabasalia are symbionts in the gut of termites and cockroaches or parasites and therefore formidably difficult to cultivate, rendering available data insufficient. Increasing the numbers of examined taxa and informative characters (e.g., genes) is likely to produce more reliable inferences.Principal FindingsActin and elongation factor-1α genes were identified newly from 22 species of termite-gut symbionts through careful manipulations and seven cultured species, which covered major lineages of Parabasalia. Their protein sequences were concatenated and analyzed with sequences of previously and newly identified glyceraldehyde-3-phosphate dehydrogenase and the small-subunit rRNA gene. This concatenated dataset provided more robust phylogenetic relationships among major groups of Parabasalia and a more plausible new root position than those previously reported.Conclusions/SignificanceWe conclude that increasing the number of sampled taxa as well as the addition of new sequences greatly improves the accuracy and robustness of the phylogenetic inference. A morphologically simple cell is likely the ancient form in Parabasalia as opposed to a cell with elaborate flagellar and cytoskeletal structures, which was defined as most basal in previous inferences. Nevertheless, the evolution of Parabasalia is complex owing to several independent multiplication and simplification events in these structures. Therefore, systematics based solely on morphology does not reflect the evolutionary history of parabasalids.

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“…Phylogenetic relationships among the parabasalids were first proposed on the basis of morphological differences mostly linked to the structure and development of the cytoskeleton (Honigberg 1963;Brugerolle 1976). More recently, nuclear small subunit (SSU) rRNA gene sequences comparison was extensively used in parabasalid reconstructions (for recent references, see Gerbod et al 2002;Keeling 2002;Hampl et al 2004Hampl et al , 2006Hampl et al , 2007Ohkuma et al 2005;Carpenter and Keeling 2007;Dufernez et al 2007;Noël et al 2007;Noda et al 2009). The SSU rRNA analyses were globally incongruent with the morphology-based classification of this group (Honigberg 1963;Brugerolle 1976) and many authors pointed out the need to revise parabasalid systematics.…”

Section: Introductionmentioning

confidence: 99%

Molecular identification and phylogenetic relationships of trichomonad isolates of galliform birds inferred from nuclear small subunit rRNA gene sequences

et al. 2009

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Histomonas meleagridis is the etiological agent of histomonosis or blackhead disease. Recently, genotyping, based on polymerase chain reaction and sequencing of internal transcribed spacer-1 sequences was applied to various isolates originating from fowl. Three genotypes were described: types I and II isolates were associated with clinical disease and probably derived from H. meleagridis, whereas, type III isolates were not disease-associated and likely corresponded to Parahistomonas wenrichi according to morphological observations. However, this latter species has never been characterized at the molecular level and its phylogenetic relationships with other parabasalids remained hypothetical. To confirm the identification of these isolates, small subunit rRNA gene sequences were obtained from representatives of types I, II, and III and analyzed in a broad phylogeny including 64 other parabasalid sequences. From our phylogenetic trees, we confirmed that types I and II isolates were closely related, if not identical, to H. meleagridis, while type III isolates represented P. wenrichi. Both species clustered together with high support. This grouping suggested that speciation leading to these two species inhabiting the same hosts and ecological niche occurred recently in birds. In addition, speciation was likely followed by loss of pathogenicity in P. wenrichi.

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Molecular phylogeny of parabasalids with emphasis on the order Cristamonadida and its complex morphological evolution

Cited by 24 publications

References 33 publications

Molecular and morphological analysis of the family Calonymphidae with a description of Calonympha chia sp. nov., Snyderella kirbyi sp. nov., Snyderella swezyae sp. nov. and Snyderella yamini sp. nov.

Molecular and morphological analysis of the family Calonymphidae with a description of Calonympha chia sp. nov., Snyderella kirbyi sp. nov., Snyderella swezyae sp. nov. and Snyderella yamini sp. nov.

Molecular Phylogeny and Evolution of Parabasalia with Improved Taxon Sampling and New Protein Markers of Actin and Elongation Factor-1α

Molecular identification and phylogenetic relationships of trichomonad isolates of galliform birds inferred from nuclear small subunit rRNA gene sequences

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