Phylogenomics Places Orphan Protistan Lineages in a Novel Eukaryotic Super-Group

被引：89

作者：

Brown, Matthew W. ^{[1
,2
]}

Heiss, Aaron A. ^{[3
,4
,5
,6
]}

Kamikawa, Ryoma ^{[7
]}

Inagaki, Yuji ^{[8
,9
]}

Yabuki, Akinori ^{[10
]}

Tice, Alexander K. ^{[1
,2
]}

Shiratori, Takashi ^{[8
]}

Ishida, Ken-Ichiro ^{[8
]}

Hashimoto, Tetsuo ^{[8
,9
]}

Simpson, Alastair G. B. ^{[3
,4
]}

Roger, Andrew J. ^{[4
,11
]}

机构：

[1] Mississippi State Univ, Dept Biol Sci, Mississippi State, MS 39762 USA

[2] Mississippi State Univ, Inst Genom Biocomp & Biotechnol, Mississippi State, MS 39762 USA

[3] Dalhousie Univ, Dept Biol, Halifax, NS, Canada

[4] Dalhousie Univ, Ctr Comparat Genom & Evolutionary Bioinformat, Halifax, NS, Canada

[5] Amer Museum Nat Hist, Dept Invertebrate Zool, New York, NY 10024 USA

[6] Amer Museum Nat Hist, Sackler Inst Comparat Genom, New York, NY 10024 USA

[7] Kyoto Univ, Grad Sch Human & Environm Studies, Grad Sch Global Environm Studies, Kyoto, Japan

[8] Univ Tsukuba, Grad Sch Life & Environm Sci, Ibaraki, Japan

[9] Univ Tsukuba, Ctr Computat Sci, Ibaraki, Japan

[10] Japan Agcy Marine Earth Sci & Technol JAMSTEC, Yokosuka, Kanagawa, Japan

[11] Dalhousie Univ, Dept Biochem & Mol Biol, Halifax, NS, Canada

来源：

GENOME BIOLOGY AND EVOLUTION | 2018年 / 10卷 / 02期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会; 日本学术振兴会;

关键词：

eukaryote tree of life; concatenated phylogenetic analysis; protist; site-heterogeneous models; TREE; LIFE; EVOLUTION; ANIMALS; MODELS; ROOT; CLASSIFICATION; OPISTHOKONTS; AFFINITIES; FLAGELLATE;

D O I：

10.1093/gbe/evy014

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Recent phylogenetic analyses position certain "orphan" protist lineages deep in the tree of eukaryotic life, but their exact placements are poorly resolved. We conducted phylogenomic analyses that incorporate deeply sequenced transcriptomes from representatives of collodictyonids (diphylleids), rigifilids, Mantamonas, and ancyromonads (planomonads). Analyses of 351 genes, using site-heterogeneous mixture models, strongly support a novel super-group-level clade that includes collodictyonids, rigifilids, and Mantamonas, which we name "CRuMs". Further, they robustly place CRuMs as the closest branch to Amorphea (including animals and fungi). Ancyromonads are strongly inferred to be more distantly related to Amorphea than are CRuMs. They emerge either as sister to malawimonads, or as a separate deeper branch. 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. This makes both groups crucial in examinations of the deepest-level history of extant eukaryotes.

引用

页码：427 / 433

页数：7

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