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Phylogenomics provides robust support for a two-domains tree of life.


ABSTRACT: Hypotheses about the origin of eukaryotic cells are classically framed within the context of a universal 'tree of life' based on conserved core genes. Vigorous ongoing debate about eukaryote origins is based on assertions that the topology of the tree of life depends on the taxa included and the choice and quality of genomic data analysed. Here we have reanalysed the evidence underpinning those claims and apply more data to the question by using supertree and coalescent methods to interrogate >3,000 gene families in archaea and eukaryotes. We find that eukaryotes consistently originate from within the archaea in a two-domains tree when due consideration is given to the fit between model and data. Our analyses support a close relationship between eukaryotes and Asgard archaea and identify the Heimdallarchaeota as the current best candidate for the closest archaeal relatives of the eukaryotic nuclear lineage.

SUBMITTER: Williams TA 

PROVIDER: S-EPMC6942926 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Phylogenomics provides robust support for a two-domains tree of life.

Williams Tom A TA   Cox Cymon J CJ   Foster Peter G PG   Szöllősi Gergely J GJ   Embley T Martin TM  

Nature ecology & evolution 20191209 1


Hypotheses about the origin of eukaryotic cells are classically framed within the context of a universal 'tree of life' based on conserved core genes. Vigorous ongoing debate about eukaryote origins is based on assertions that the topology of the tree of life depends on the taxa included and the choice and quality of genomic data analysed. Here we have reanalysed the evidence underpinning those claims and apply more data to the question by using supertree and coalescent methods to interrogate >3  ...[more]

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