Phylogenomic analysis of Odyssella thessalonicensis fortifies the common origin of Rickettsiales, Pelagibacter ubique and Reclimonas americana mitochondrion

The evolution of the Alphaproteobacteria and origin of the mitochondria are topics of considerable debate. Most studies have placed the mitochondria ancestor within the Rickettsiales order. Ten years ago, the bacterium Odyssella thessalonicensis was isolated from Acanthamoeba spp., and the 16S rDNA...

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Published in:PloS one 2011-09, Vol.6 (9), p.e24857-e24857
Main Authors: Georgiades, Kalliopi, Madoui, Mohammed-Amine, Le, Phuong, Robert, Catherine, Raoult, Didier
Format: Article
Language:English
Subjects:
Alphaproteobacteria
Alphaproteobacteria - genetics
Bacteria
Bayesian analysis
Bioinformatics
Biology
Candidatus Pelagibacter ubique
Deoxyribonucleic acid
DNA
DNA, Bacterial - genetics
DNA, Mitochondrial - genetics
E coli
Escherichia coli
Evolution
Evolution, Molecular
Genomes
Genomics
Legionella
Mitochondria
Mitochondria - genetics
Mitochondrial DNA
Phylogenetics
Phylogeny
Proteins
Proteobacteria
Rhizobiales
Rhodobacterales
Rickettsia
Rickettsia prowazekii
Rickettsiales
rRNA 16S
Sterols
Studies
Wolbachia
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description The evolution of the Alphaproteobacteria and origin of the mitochondria are topics of considerable debate. Most studies have placed the mitochondria ancestor within the Rickettsiales order. Ten years ago, the bacterium Odyssella thessalonicensis was isolated from Acanthamoeba spp., and the 16S rDNA phylogeny placed it within the Rickettsiales. Recently, the whole genome of O. thessalonicensis has been sequenced, and 16S rDNA phylogeny and more robust and accurate phylogenomic analyses have been performed with 65 highly conserved proteins. The results suggested that the O. thessalonicensis emerged between the Rickettsiales and other Alphaproteobacteria. The mitochondrial proteins of the Reclinomonas americana have been used to locate the phylogenetic position of the mitochondrion ancestor within the Alphaproteobacteria tree. Using the K tree score method, nine mitochondrion-encoded proteins, whose phylogenies were congruent with the Alphaproteobacteria phylogenomic tree, have been selected and concatenated for Bayesian and Maximum Likelihood phylogenies. The Reclinomonas americana mitochondrion is a sister taxon to the free-living bacteria Candidatus Pelagibacter ubique, and together, they form a clade that is deeply rooted in the Rickettsiales clade. The Reclinomonas americana mitochondrion phylogenomic study confirmed that mitochondria emerged deeply in the Rickettsiales clade and that they are closely related to Candidatus Pelagibacter ubique.
doi_str_mv 10.1371/journal.pone.0024857
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1932-6203
language eng
recordid cdi_plos_journals_1308588834
source PubMed Central(OpenAccess); Publicly Available Content (ProQuest)
subjects Alphaproteobacteria
Alphaproteobacteria - genetics
Bacteria
Bayesian analysis
Bioinformatics
Biology
Candidatus Pelagibacter ubique
Deoxyribonucleic acid
DNA
DNA, Bacterial - genetics
DNA, Mitochondrial - genetics
E coli
Escherichia coli
Evolution
Evolution, Molecular
Genomes
Genomics
Legionella
Mitochondria
Mitochondria - genetics
Mitochondrial DNA
Phylogenetics
Phylogeny
Proteins
Proteobacteria
Rhizobiales
Rhodobacterales
Rickettsia
Rickettsia prowazekii
Rickettsiales
rRNA 16S
Sterols
Studies
Wolbachia
title Phylogenomic analysis of Odyssella thessalonicensis fortifies the common origin of Rickettsiales, Pelagibacter ubique and Reclimonas americana mitochondrion
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