Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species
It has been suggested that positive selection, in particular selection favoring a change in the protein sequence, plays a role in the evolution of olfactory receptor (OR) gene repertoires in fish and mammals. ORs are 7-transmembrane domain (TM) proteins, members of the G-protein–coupled receptor sup...
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fthighwire:oai:open-archive.highwire.org:jhered:101/3/325 2023-05-15T18:20:08+02:00 Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species Steiger, Silke S. Fidler, Andrew E. Mueller, Jakob C. Kempenaers, Bart 2010-05-01 00:00:00.0 text/html http://jhered.oxfordjournals.org/cgi/content/short/101/3/325 https://doi.org/10.1093/jhered/esp105 en eng Oxford University Press http://jhered.oxfordjournals.org/cgi/content/short/101/3/325 http://dx.doi.org/10.1093/jhered/esp105 Copyright (C) 2010, American Genetic Association Original Articles TEXT 2010 fthighwire https://doi.org/10.1093/jhered/esp105 2010-05-01T13:22:34Z It has been suggested that positive selection, in particular selection favoring a change in the protein sequence, plays a role in the evolution of olfactory receptor (OR) gene repertoires in fish and mammals. ORs are 7-transmembrane domain (TM) proteins, members of the G-protein–coupled receptor superfamily in vertebrate genomes, and responsible for odorant binding and discrimination. OR gene repertoires in birds are surprisingly large and diverse, suggesting that birds have a keen olfactory sense. The aim of this study is to investigate signatures of positive selection in an expanded OR clade (group-γ-c) that seems to be a characteristic of avian genomes. Using maximum-likelihood methods that estimate the d N /d S ratios and account for the effects of recombination, we show here that there is evidence for positive selection in group-γ-c partial OR coding sequences of 9 bird species that are likely to have different olfactory abilities: the blue tit ( Cyanistes caeruleus ), the black coucal ( Centropus grillii ), the brown kiwi ( Apteryx australis ), the canary ( Serinus canaria ), the galah ( Eolophus roseicapillus ), the kakapo ( Strigops habroptilus ), the mallard ( Anas platyrhynchos ), the red jungle fowl ( Gallus gallus ), and the snow petrel ( Pagodroma nivea ). Positively selected codons were predominantly located in TMs, which in other vertebrates are involved in odorant binding. Our data suggest that 1) at least some avian OR genes have been subjected to adaptive evolution, 2) the extent of such adaptive evolution differs between bird species, and 3) positive selective pressures may have been stronger on the group-γ-c OR genes of species that have well-developed olfactory abilities. Text Snow Petrel HighWire Press (Stanford University) Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) Journal of Heredity 101 3 325 333 |
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HighWire Press (Stanford University) |
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English |
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Original Articles |
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Original Articles Steiger, Silke S. Fidler, Andrew E. Mueller, Jakob C. Kempenaers, Bart Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species |
topic_facet |
Original Articles |
description |
It has been suggested that positive selection, in particular selection favoring a change in the protein sequence, plays a role in the evolution of olfactory receptor (OR) gene repertoires in fish and mammals. ORs are 7-transmembrane domain (TM) proteins, members of the G-protein–coupled receptor superfamily in vertebrate genomes, and responsible for odorant binding and discrimination. OR gene repertoires in birds are surprisingly large and diverse, suggesting that birds have a keen olfactory sense. The aim of this study is to investigate signatures of positive selection in an expanded OR clade (group-γ-c) that seems to be a characteristic of avian genomes. Using maximum-likelihood methods that estimate the d N /d S ratios and account for the effects of recombination, we show here that there is evidence for positive selection in group-γ-c partial OR coding sequences of 9 bird species that are likely to have different olfactory abilities: the blue tit ( Cyanistes caeruleus ), the black coucal ( Centropus grillii ), the brown kiwi ( Apteryx australis ), the canary ( Serinus canaria ), the galah ( Eolophus roseicapillus ), the kakapo ( Strigops habroptilus ), the mallard ( Anas platyrhynchos ), the red jungle fowl ( Gallus gallus ), and the snow petrel ( Pagodroma nivea ). Positively selected codons were predominantly located in TMs, which in other vertebrates are involved in odorant binding. Our data suggest that 1) at least some avian OR genes have been subjected to adaptive evolution, 2) the extent of such adaptive evolution differs between bird species, and 3) positive selective pressures may have been stronger on the group-γ-c OR genes of species that have well-developed olfactory abilities. |
format |
Text |
author |
Steiger, Silke S. Fidler, Andrew E. Mueller, Jakob C. Kempenaers, Bart |
author_facet |
Steiger, Silke S. Fidler, Andrew E. Mueller, Jakob C. Kempenaers, Bart |
author_sort |
Steiger, Silke S. |
title |
Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species |
title_short |
Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species |
title_full |
Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species |
title_fullStr |
Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species |
title_full_unstemmed |
Evidence for Adaptive Evolution of Olfactory Receptor Genes in 9 Bird Species |
title_sort |
evidence for adaptive evolution of olfactory receptor genes in 9 bird species |
publisher |
Oxford University Press |
publishDate |
2010 |
url |
http://jhered.oxfordjournals.org/cgi/content/short/101/3/325 https://doi.org/10.1093/jhered/esp105 |
long_lat |
ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
geographic |
Nivea |
geographic_facet |
Nivea |
genre |
Snow Petrel |
genre_facet |
Snow Petrel |
op_relation |
http://jhered.oxfordjournals.org/cgi/content/short/101/3/325 http://dx.doi.org/10.1093/jhered/esp105 |
op_rights |
Copyright (C) 2010, American Genetic Association |
op_doi |
https://doi.org/10.1093/jhered/esp105 |
container_title |
Journal of Heredity |
container_volume |
101 |
container_issue |
3 |
container_start_page |
325 |
op_container_end_page |
333 |
_version_ |
1766197621492285440 |