Phylogenomic analysis of Emiliania huxleyi provides evidence for haptophyte-stramenopile association and a chimeric haptophyte nuclear genome

Marine Genomics
John J Miller, Charles F Delwiche

Abstract

Emiliania huxleyi is a haptophyte alga of uncertain phylogenetic affinity containing a secondarily derived, chlorophyll c containing plastid. We sought to characterize its relationships with other taxa by quantifying the bipartitions in which it was included from a group of single protein phylogenetic trees in a way that allowed for variation in taxonomic content and accounted for paralogous sequences. The largest number of sequences supported a phylogenetic relationship of E. huxleyi with the stramenopiles, in particular Aureococcus anophagefferens. Far fewer nuclear sequences gave strong support to the placement of this coccolithophorid with the cryptophyte, Guillardia theta. The majority of the sequences that did support this relationship did not have plastid related functions. These results suggest that the haptophytes may be more closely allied with the heterokonts than with the cryptophytes. Another small set of genes associated E. huxleyi with the Viridiplantae with high support. While these genes could have been acquired with a plastid, the lack of plastid related functions among the proteins for which they code and the lack of other organisms with chlorophyll c containing plastids within these bipartitions suggests oth...Continue Reading

References

Jan 1, 1981·Bio Systems·T Cavalier-Smith
Oct 25, 1996·Science·A GoffeauS G Oliver
Sep 1, 1996·Genome Research·M F BonaldoM B Soares
Sep 1, 1997·Nucleic Acids Research·S F AltschulD J Lipman
Sep 5, 1997·Science·F R BlattnerY Shao
Oct 24, 1997·Science·R L TatusovD J Lipman
Dec 16, 1998·Science·UNKNOWN C. elegans Sequencing Consortium
Oct 6, 1999·Genome Research·X Huang, A Madan
Nov 26, 1999·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·S SatoS Tabata
Mar 25, 2000·Science·M D AdamsJ C Venter
May 29, 2000·Trends in Genetics : TIG·P RiceA Bleasby
Feb 23, 2002·Nature·V WoodL Cerrutti
Apr 6, 2002·Science·Stephen A GoffSteven Briggs
Jul 19, 2002·Nature·W SundaS Huntsman
Oct 9, 2002·Nature·Malcolm J GardnerBart Barrell
May 21, 2003·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Niji OhtaTsuneyoshi Kuroiwa
Nov 19, 2003·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Yasukazu NakamuraSatoshi Tabata
Dec 23, 2003·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Takakazu KanekoSatoshi Tabata
Feb 14, 2004·Molecular Biology and Evolution·Hwan Su YoonDebashish Bhattacharya
Mar 23, 2004·Nucleic Acids Research·Robert C Edgar
Mar 27, 2004·Science·Mitchell S AbrahamsenVivek Kapur
Jul 17, 2004·Science·Paul G FalkowskiF J R Taylor
Oct 2, 2004·Science·E Virginia ArmbrustDaniel S Rokhsar
Feb 25, 2005·Nature·Brendan LoftusNeil Hall
Apr 22, 2005·Journal of Molecular Biology·Nicola J PatronPatrick J Keeling
Apr 30, 2005·Nature Reviews. Genetics·Frédéric DelsucHervé Philippe
May 6, 2005·Nature·L EichingerA Kuspa
May 27, 2005·Molecular Biology and Evolution·Tsvetan R BachvaroffCharles F Delwiche
Jul 16, 2005·Science·Najib M El-SayedNeil Hall
Nov 24, 2005·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·M Virginia Sánchez PuertaCharles F Delwiche
Feb 24, 2006·Journal of Molecular Biology·Nicola J PatronPatrick J Keeling
Oct 13, 2006·Genome Génome / Conseil National De Recherches Canada·Fabien BurkiJan Pawlowski
Nov 11, 2006·Science·Erica SodergrenRita Wright
Jan 16, 2007·Science·Jane M CarltonPatricia J Johnson
Apr 27, 2007·Proceedings of the National Academy of Sciences of the United States of America·Brian PalenikIgor V Grigoriev

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Citations

Feb 5, 2016·Nature Communications·Grażyna M DurakGlen L Wheeler
Feb 23, 2019·PLoS Genetics·Eduard Ocaña-PallarèsIñaki Ruiz-Trillo

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