The evolution of cichlid fish egg-spots is linked with a cis-regulatory change.
The evolution of cichlid fish egg-spots is linked with a cis-regulatory change.
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DOI:
10.1038/ncomms6149
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发表时间:
2014-10-09
影响因子:
16.6
通讯作者:
Salzburger, Walter
中科院分区:
文献类型:
--
作者:
Santos, M. Emilia;Braasch, Ingo;Boileau, Nicolas;Meyer, Britta S.;Sauteur, Loic;Boehne, Astrid;Belting, Heinz-Georg;Affolter, Markus;Salzburger, Walter
The origin of novel phenotypic characters is a key component in organismal diversification; yet, the mechanisms underlying the emergence of such evolutionary novelties are largely unknown. Here we examine the origin of egg-spots, an evolutionary innovation of the most species-rich group of cichlids, the haplochromines, where these conspicuous male fin colour markings are involved in mating. Applying a combination of RNAseq, comparative genomics and functional experiments, we identify two novel pigmentation genes, fhl2a and fhl2b, and show that especially the more rapidly evolving b-paralog is associated with egg-spot formation. We further find that egg-spot bearing haplochromines, but not other cichlids, feature a transposable element in the cis-regulatory region of fhl2b. Using transgenic zebrafish, we finally demonstrate that this region shows specific enhancer activities in iridophores, a type of pigment cells found in egg-spots, suggesting that a cis-regulatory change is causally linked to the gain of expression in egg-spot bearing haplochromines. The mechanisms underlying the emergence of novel morphological traits are largely unknown. Here, the authors show that cis-regulatory changes controlling the expression of the fhl2b pigmentation gene are associated with the evolution of egg-spots colour markings in the male fins of a group of cichlids.
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影响因子:
3.7
作者:
Egger B;Klaefiger Y;Theis A;Salzburger W
通讯作者:
Salzburger W
影响因子:
2
作者:
Heule, C.;Salzburger, W.
通讯作者:
Salzburger, W.
DOI:
10.1242/dev.096719
发表时间:
2013-07
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Frohnhöfer HG;Krauss J;Maischein HM;Nüsslein-Volhard C
通讯作者:
Nüsslein-Volhard C
DOI:
10.1007/978-1-61779-228-1_23
发表时间:
2011-01-01
期刊:
MOLECULAR METHODS FOR EVOLUTIONARY GENETICS
影响因子:
--
作者:
Bessa, Jose;Luis Gomez-Skarmeta, Jose
通讯作者:
Luis Gomez-Skarmeta, Jose
DOI:
10.1093/bioinformatics/bts199
发表时间:
2012-06-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Kearse M;Moir R;Wilson A;Stones-Havas S;Cheung M;Sturrock S;Buxton S;Cooper A;Markowitz S;Duran C;Thierer T;Ashton B;Meintjes P;Drummond A
通讯作者:
Drummond A