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Comment
. 2018 Mar 29;14(3):e1007215.
doi: 10.1371/journal.pgen.1007215. eCollection 2018 Mar.

Asgard archaea do not close the debate about the universal tree of life topology

Violette Da Cunha  1   2 , Morgan Gaia  1 , Arshan Nasir  3 , Patrick Forterre  1   2
Affiliations
Comment

Asgard archaea do not close the debate about the universal tree of life topology

Violette Da Cunha et al. PLoS Genet. .
No abstract available

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Maximum-likelihood tree of EF2 without bacteria.
Maximum-likelihood single-protein tree of EF2 without bacteria (LG+R6 model) after inclusion of Asgard sequences. Eukaryotes, Thaumarchaeota, Crenarchaeota, and Euryarchaeota are indicated in blue, orange, dark green, and light green, respectively. Asgard sequences are indicated in purple. Odin and Thorarchaea seem to possess probable paralogs retrievable with BLASTp searches that were not included because they are different in length than the other Asgard sequences and contain specific indels. The scale bar represents the average number of substitutions per site. Values at nodes represent support calculated by nonparametric bootstrap (out of 100).
Fig 2
Fig 2. Phylogenetic trees of the concatenations of the 11 Woese proteins and the 6 AU-relevant Woese proteins, without bacteria.
(a) Maximum-likelihood tree of the concatenated 11 Woese proteins with the Asgard sequences (LG+R7). No satisfactory convergence could be obtained in Bayesian inference with the CAT-GTR model at the time of this submission. (b) Phylogenetic tree of the concatenated 6 AU-relevant Woese proteins with the Asgard sequences. ML (LG+F+R8) and Bayesian inference (CAT-GTR model; maxdiff = 0.09) trees were identical, and supports from both were reported on the topology (nonparametric bootstrap, out of 100, in black, and posterior probabilities in red, respectively). All other combinations of chains (4 independent chains)—despite moderate convergences (maxdiff between 0.01 and 0.03)—yielded the same global topology, with the Asgards grouped with Euryarchaeota. For both trees, the scale bar represents the average number of substitutions per site.
See this image and copyright information in PMC

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References

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