Proteome Evolution of Deep-Sea Hydrothermal Vent Alvinellid Polychaetes Supports the Ancestry of Thermophily and Subsequent Adaptation to Cold in Some Lineages

被引:16
|
作者
Fontanillas, Eric [1 ]
Galzitskaya, Oxana V. [2 ]
Lecompte, Odile [3 ]
Lobanov, Mikhail Y. [2 ]
Tanguy, Arnaud [1 ]
Mary, Jean [1 ]
Girguis, Peter R. [4 ]
Hourdez, Stephane [1 ]
Jollivet, Didier [1 ]
机构
[1] UPMC Univ Paris 06, Adaptat & Divers Milieu Marin, Sorbonne Univ, CNRS UMR 7144,Stn Biol Roscoff,Equipe ABICE, F-29688 Roscoff, France
[2] RAS, Inst Prot Res, Lab Prot Phys, Inst Skaya St 4, Moscow 142290, Russia
[3] Fac Med, UMR7357, CSTB ICUBE, 4 Rue Kirschleger, F-67085 Strasbourg, France
[4] Harvard Univ, Biol Labs, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA
来源
GENOME BIOLOGY AND EVOLUTION | 2017年 / 9卷 / 02期
关键词
hydrothermal vents; thermal adaptation; RNAseq; protein composition; selection; REPRODUCTIVE-BIOLOGY; THERMAL-STABILITY; HIGH-TEMPERATURE; WORM; METAZOAN; THERMOSTABILITY; ENVIRONMENT; DESBRUYERES; MECHANISMS; INTERFACE;
D O I
10.1093/gbe/evw298
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Temperature, perhaps more than any other environmental factor, is likely to influence the evolution of all organisms. It is also a very interesting factor to understand how genomes are shaped by selection over evolutionary timescales, as it potentially affects the whole genome. Among thermophilic prokaryotes, temperature affects both codon usage and protein composition to increase the stability of the transcriptional/translational machinery, and the resulting proteins need to be functional at high temperatures. Among eukaryotes less is known about genome evolution, and the tube-dwelling worms of the family Alvinellidae represent an excellent opportunity to test hypotheses about the emergence of thermophily in ectothermic metazoans. The Alvinellidae are a group of worms that experience varying thermal regimes, presumably having evolved into these niches over evolutionary times. Here we analyzed 423 putative orthologous loci derived from 6 alvinellid species including the thermophilic Alvinella pompejana and Paralvinella sulfincola. This comparative approach allowed us to assess amino acid composition, codon usage, divergence, direction of residue changes and the strength of selection along the alvinellid phylogeny, and to design a new eukaryotic thermophilic criterion based on significant differences in the residue composition of proteins. Contrary to expectations, the alvinellid ancestor of all present-day species seems to have been thermophilic, a trait subsequently maintained by purifying selection in lineages that still inhabit higher temperature environments. In contrast, lineages currently living in colder habitats likely evolved under selective relaxation, with some degree of positive selection for low-temperature adaptation at the protein level.
引用
收藏
页码:279 / 296
页数:18
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