A phylogenomic study of endosymbiotic bacteria
(2004) In Molecular biology and evolution 21(6). p.1110-1122- Abstract
- Endosymbiotic bacteria of aphids, Buchnera aphidicola, and tsetse flies, Wigglesworthia glossinidia, are descendents of free-living gamma-Proteobacteria. The acceleration of sequence evolution in the endosymbiont genomes is here estimated from a phylogenomic analysis of the gamma-Proteobacteria. The tree topologies associated with the most highly conserved genes suggest that the endosymbionts form a sister group with Escherichia coli, Salmonella sp., and Yersinia pestis. Our results indicate that deviant tree topologies result from high substitution rates and biased nucleotide patterns, rather than from lateral gene transfer, as previously suggested. A reinvestigation of the relative rate increase in the endosymbiont genomes reveals... (More)
- Endosymbiotic bacteria of aphids, Buchnera aphidicola, and tsetse flies, Wigglesworthia glossinidia, are descendents of free-living gamma-Proteobacteria. The acceleration of sequence evolution in the endosymbiont genomes is here estimated from a phylogenomic analysis of the gamma-Proteobacteria. The tree topologies associated with the most highly conserved genes suggest that the endosymbionts form a sister group with Escherichia coli, Salmonella sp., and Yersinia pestis. Our results indicate that deviant tree topologies result from high substitution rates and biased nucleotide patterns, rather than from lateral gene transfer, as previously suggested. A reinvestigation of the relative rate increase in the endosymbiont genomes reveals variability among genes that correlate with host-associated metabolic dependencies. The conclusion is that host-level selection has retarded both the loss of genes and the acceleration of sequence evolution in endocellular symbionts. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/146880
- author
- Canbäck, Björn LU ; Tamas, I and Andersson, S G E
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Molecular biology and evolution
- volume
- 21
- issue
- 6
- pages
- 1110 - 1122
- publisher
- Oxford University Press
- external identifiers
-
- wos:000221599300016
- pmid:15014155
- scopus:2442667671
- ISSN
- 0737-4038
- DOI
- 10.1093/molbev/msh122
- language
- English
- LU publication?
- yes
- id
- 1ff7c7d5-4601-454c-9809-85f0c6fd9bef (old id 146880)
- date added to LUP
- 2016-04-01 11:40:30
- date last changed
- 2022-01-26 08:33:46
@article{1ff7c7d5-4601-454c-9809-85f0c6fd9bef,
abstract = {{Endosymbiotic bacteria of aphids, Buchnera aphidicola, and tsetse flies, Wigglesworthia glossinidia, are descendents of free-living gamma-Proteobacteria. The acceleration of sequence evolution in the endosymbiont genomes is here estimated from a phylogenomic analysis of the gamma-Proteobacteria. The tree topologies associated with the most highly conserved genes suggest that the endosymbionts form a sister group with Escherichia coli, Salmonella sp., and Yersinia pestis. Our results indicate that deviant tree topologies result from high substitution rates and biased nucleotide patterns, rather than from lateral gene transfer, as previously suggested. A reinvestigation of the relative rate increase in the endosymbiont genomes reveals variability among genes that correlate with host-associated metabolic dependencies. The conclusion is that host-level selection has retarded both the loss of genes and the acceleration of sequence evolution in endocellular symbionts.}},
author = {{Canbäck, Björn and Tamas, I and Andersson, S G E}},
issn = {{0737-4038}},
language = {{eng}},
number = {{6}},
pages = {{1110--1122}},
publisher = {{Oxford University Press}},
series = {{Molecular biology and evolution}},
title = {{A phylogenomic study of endosymbiotic bacteria}},
url = {{http://dx.doi.org/10.1093/molbev/msh122}},
doi = {{10.1093/molbev/msh122}},
volume = {{21}},
year = {{2004}},
}