Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes

@article{Lax2018HemimastigophoraIA,
  title={Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes},
  author={Gordon Lax and Yana Eglit and Laura Eme and Erin M. Bertrand and Andrew J. Roger and Alastair G. B. Simpson},
  journal={Nature},
  year={2018},
  volume={564},
  pages={410-414}
}
Almost all eukaryote life forms have now been placed within one of five to eight supra-kingdom-level groups using molecular phylogenetics1–4. The ‘phylum’ Hemimastigophora is probably the most distinctive morphologically defined lineage that still awaits such a phylogenetic assignment. First observed in the nineteenth century, hemimastigotes are free-living predatory protists with two rows of flagella and a unique cell architecture5–7; to our knowledge, no molecular sequence data or cultures… Expand
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References

SHOWING 1-10 OF 54 REFERENCES
Collodictyon—An Ancient Lineage in the Tree of Eukaryotes
TLDR
This work investigates the evolutionary origin of the poorly studied protist Collodictyon by sequencing a cDNA library as well as the 18S and 28S ribosomal DNA (rDNA) genes, and suggests that it constitutes a new lineage in the global eukaryote phylogeny. Expand
Phylogenomics demonstrates that breviate flagellates are related to opisthokonts and apusomonads
TLDR
The balance of evidence suggests that the breviate lineage forms the deepest branch within Obazoa, and a 159-protein supermatrix is constructed, indicating that this protein complex involved in metazoan multicellularity may have evolved earlier in eukaryote evolution than previously thought. Expand
An Alternative Root for the Eukaryote Tree of Life
TLDR
A carefully vetted data set, consisting of 37 nuclear-encoded proteins of close bacterial ancestry (euBacs) and their closest bacterial relatives, augmented by deep sequencing of the Acrasis kona (Heterolobosea, Discoba), produces a highly robust, fully resolved global phylogeny of eukaryotes. Expand
Phylogenomics Places Orphan Protistan Lineages in a Novel Eukaryotic Super-Group
TLDR
CRuMs and ancyromonads represent two distinct major groups that branch deeply on the lineage that includes animals, near the most commonly inferred root of the eukaryote tree, which makes both groups crucial in examinations of the deepest-level history of extant eucaryotes. Expand
Untangling the early diversification of eukaryotes: a phylogenomic study of the evolutionary origins of Centrohelida, Haptophyta and Cryptista
Assembling the global eukaryotic tree of life has long been a major effort of Biology. In recent years, pushed by the new availability of genome-scale data for microbial eukaryotes, it has becomeExpand
Morphological Identification and Single-Cell Genomics of Marine Diplonemids
TLDR
The use of single-cell genomics (SCG) and microscopy is used to characterize ten marine diplonemids, isolated from a range of depths in the eastern North Pacific Ocean, and models of highly conserved genes indicate a high density of non-canonical introns, lacking conventional GT-AG splice sites. Expand
A revised six‐kingdom system of life
  • T. Cavalier-smith
  • Biology, Medicine
  • Biological reviews of the Cambridge Philosophical Society
  • 1998
TLDR
A revised six‐kingdom system of life is presented, down to the level of infraphylum, modified in the light of molecular phylogenetic evidence that Myxozoa are actually Animalia, not Protozoa, and that mesozoans are related to bilaterian animals. Expand
The eukaryotic tree of life from a global phylogenomic perspective.
  • Fabien Burki
  • Biology, Medicine
  • Cold Spring Harbor perspectives in biology
  • 2014
TLDR
The pros and cons of phylogenomics are discussed and the eukaryotic supergroups are reviewed in light of earlier work that laid the foundation for the current view of the tree, including the position of the root. Expand
The hemimastigophora (Hemimastix amphikineta nov. gen., nov. spec.), a new protistan phylum from gondwanian soils.
TLDR
The phylum Hemimastigophora nov. phylum is established to include H. amphikineta and possibly Spironema multiciliatum Klebs, 1892, and clear evidence for a certain affinity is lacking but some relationship with the Euglenophyta is lacking. Expand
Morphological Identities of Two Different Marine Stramenopile Environmental Sequence Clades: Bicosoeca kenaiensis (Hilliard, 1971) and Cantina marsupialis (Larsen and Patterson, 1990) gen. nov., comb. nov.
TLDR
It is determined that two different species represented the two different MAST‐13 clades: a lorica‐bearing Bicosoeca kenaiensis and a microaerophilic flagellate previously named “Cafeteria marsupialis”, which established a new genus for these isolates, Cantina gen. nov. Expand
...
1
2
3
4
5
...