Phylogeny of Dissimilatory Sulfite Reductases Supports an Early Origin of Sulfate Respiration
It is concluded that the high similarity of bacterial and archaeal DSRs reflects their common origin from a conserved DSR, which was either present before the split between the domains Bacteria, Archaea, and Eucarya or laterally transferred between Bacteria and Archaea soon after domain divergence.
A kingdom-level phylogeny of eukaryotes based on combined protein data.
The sequences of four of the most broadly taxonomically sampled proteins available are combined to create a roughly parallel data set to that of SSU rRNA, showing strong support for most major groups and several major supergroups.
Phylogenomic analyses support the monophyly of Excavata and resolve relationships among eukaryotic “supergroups”
A phylogenomic analysis of a dataset of 143 proteins and 48 taxa indicates that Excavata forms a monophyletic suprakingdom-level group that is one of the 3 primary divisions within eukaryotes, along with unikonts and a megagroup of Archaeplastida, Rhizaria, and the chromalveolate lineages.
The tree of eukaryotes.
Multiple Lateral Transfers of Dissimilatory Sulfite Reductase Genes between Major Lineages of Sulfate-Reducing Prokaryotes
Findings complicate the use of dsrAB genes to infer phylogenetic relationships among sulfate reducers in molecular diversity studies, but establish a framework to resolve the origins and diversification of this ancient respiratory lifestyle among organisms mediating a key step in the biogeochemical cycling of sulfur.
The real ‘kingdoms’ of eukaryotes
On the age of eukaryotes: evaluating evidence from fossils and molecular clocks.
- Laura Eme, Susan C. Sharpe, Matthew W. Brown, A. Roger
- BiologyCold Spring Harbor Perspectives in Biology
- 1 August 2014
It is shown that for major eukaryote groups estimated dates of divergence, as well as their credible intervals, are heavily influenced by the relaxed molecular clock models and methods used, and by the nature and treatment of fossil calibrations.
Testing congruence in phylogenomic analysis.
Concaterpillar, a hierarchical clustering method based on likelihood-ratio testing that identifies congruent loci for phylogenomic analysis, is developed, which produces a phylogeny with stronger support for five eukaryote supergroups including the Opisthokonts, the Plantae, the stramenopiles + Apicomplexa, the Amoebozoa, and the Excavata.
Ancient origin of the integrin-mediated adhesion and signaling machinery
- A. Sebé-Pedrós, A. Roger, Franz Lang, N. King, I. Ruiz-Trillo
- BiologyProceedings of the National Academy of Sciences
- 17 May 2010
A comparative genomic analysis of the integrin adhesion machinery is reported, finding that core components are encoded in the genome of the apusozoan protist Amastigomonas sp.