Variation in promiscuity and sexual selection drives avian rate of Faster‐Z evolution

Wright, Alison E.; Harrison, Peter W.; Zimmer, Fabian; Montgomery, Stephen H.; Pointer, Marie A.; Mank, Judith E.

doi:10.1111/mec.13113

Cited by 92 publications

(131 citation statements)

References 105 publications

(309 reference statements)

Supporting

Mentioning

122

Contrasting

Order By: Relevance

“…Chromosomal location was defined by orthology in chicken, allowing us to capitalize on the stability of avian genomes (18). Due to the incomplete Z chromosome dosage compensation in birds (21)(22)(23) and the unique evolutionary forces shaping sex chromosomes (24)(25)(26)(27), we focus only on the autosomal orthologs here and have dealt with the Z-linked orthologs separately (28).…”

Section: Resultsmentioning

confidence: 99%

Sexual selection drives evolution and rapid turnover of male gene expression

Harrison

Wright

Zimmer

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

201

336

View full text Add to dashboard Cite

The profound and pervasive differences in gene expression observed between males and females, and the unique evolutionary properties of these genes in many species, have led to the widespread assumption that they are the product of sexual selection and sexual conflict. However, we still lack a clear understanding of the connection between sexual selection and transcriptional dimorphism, often termed sex-biased gene expression. Moreover, the relative contribution of sexual selection vs. drift in shaping broad patterns of expression, divergence, and polymorphism remains unknown. To assess the role of sexual selection in shaping these patterns, we assembled transcriptomes from an avian clade representing the full range of sexual dimorphism and sexual selection. We use these species to test the links between sexual selection and sex-biased gene expression evolution in a comparative framework. Through ancestral reconstruction of sex bias, we demonstrate a rapid turnover of sex bias across this clade driven by sexual selection and show it to be primarily the result of expression changes in males. We use phylogenetically controlled comparative methods to demonstrate that phenotypic measures of sexual selection predict the proportion of male-biased but not female-biased gene expression. Although male-biased genes show elevated rates of coding sequence evolution, consistent with previous reports in a range of taxa, there is no association between sexual selection and rates of coding sequence evolution, suggesting that expression changes may be more important than coding sequence in sexual selection. Taken together, our results highlight the power of sexual selection to act on gene expression differences and shape genome evolution.sperm competition | sex-biased gene expression | gene expression evolution | sexual dimorphism | sexual conflict N umerous studies across a range of organisms have convergently shown that the majority of variation in overall gene expression is explained by sex (1-6). These sex-biased genes have distinct evolutionary properties, namely they show faster rates of sequence and expression divergence, as well as rapid rates of turnover, broadly consistent with sexual selection (7, 8). The sizable proportion of genes exhibiting sex-biased expression suggests that sexual selection has the potential to shape many aspects of genome biology. Recent studies of intrasexual variation in gene expression differences between males and females of the same species have revealed patterns of overall transcription consistent with the degree of phenotypic sexual dimorphism (9, 10), and experimental manipulation of sex-specific selection affects sex-biased gene expression over short time scales (11-13). These studies together suggest that increasing sexual selection across species should lead to increased turnover in sex-biased gene expression and a greater sexualization of the transcriptome over longer evolutionary timescales.The elevated rates of coding sequence evolution often (14) but not always (15) observed for m...

show abstract

Section: Resultsmentioning

confidence: 99%

Sexual selection drives evolution and rapid turnover of male gene expression

Harrison

Wright

Zimmer

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

201

336

View full text Add to dashboard Cite

show abstract

“…The distinct pattern of inheritance in sex chromosomes means that they experience evolutionary forces different from the rest of the genome (Mank et al 2010), and they have hence been subject to a number of evolutionary studies in birds (Wang et al 2014;Zhou et al 2014), also using transcriptomic data (Balakrishnan et al 2013;Künstner et al 2010;Ramstad et al 2016;Wright et al 2015). Wright et al (2015) studied sequence and expression data of sex chromosomes simultaneously in six species of birds using RNA-seq data. The authors found that gene divergence between the species was higher on the Z-chromosome than on autosomal chromosomes.…”

Section: Sex Differencesmentioning

confidence: 99%

“…Chung et al 2015;Mueller et al 2015). Wright et al (2014) [3] {18, 22, 23}; Harrison et al (2015) [3] {18, 22, 23}; Li et al (2015) [2] {3, 22, 24}; Smith et al (2015) [2] {12, 16}; Wright et al (2015) [3] {18, 22, 23} Anser cygnoides Swan Goose a Harrison et al (2015) [3] {18, 22, 23}; Lu et al (2015) [1, 2] {15}; Tariq et al (2015) [2] {28}; Wright et al (2015) [3] {18, 22, 23}; Chen et al (2017b) [2] {28}; Cao et al (2017) Harrison et al (2015) [3] {18, 22, 23}; Wright et al (2014) [3] {18, 22, 23}; Wright et al (2015) [3] {18, 22, 23} Numida meleagris Helmeted Guineafowl Harrison et al (2015) [3] {18, 22, 23}; Wright et al (2015) [3] {18, 22, 23} Pavo cristatus Indian Peafowl Harrison et al (2015) [3] {18, 22, 23}; Wright et al (2015) [3] {18, 22, 23}…”

Section: Characterisation Of Transcriptomesmentioning

confidence: 99%

“…This classification scheme was initiated to generate consistent descriptions of gene products that can be used across species boundaries (Gene Ontology Consortium 2004). GO analyses are frequently used in transcriptome studies to help reduce complexity and highlight biological processes , and also, of course, in avian studies (Balakrishnan et al 2013;Ekblom et al 2014;Peterson et al 2012;Santure et al 2011;Vijayakumar et al 2014;Wright et al 2015). By classifying the genes that were differentially expressed between migratory and sedentary Dark-eyed Juncos Junco hyemalis through GO analysis, Fudickar et al (2016) found that genes involved in lipid transport and metabolism were overrepresented in migrant individuals while genes involved in reproductive processes were overrepresented in resident individuals.…”

Section: Biological Interpretation Of Rna-seq Datamentioning

confidence: 99%

“…Common Pheasant Harrison et al (2015) [3] {18, 22, 23}; Wright et al (2015) (Richardson et al 2017). To facilitate future molecular ecology and evolution studies in the European Starling, Richardson et al (2017) characterised the liver transcriptome of this species.…”

Section: Phasianus Colchicusmentioning

confidence: 99%

See 2 more Smart Citations

Avian transcriptomics: opportunities and challenges

Jax

Kraus

2018

J Ornithol

View full text Add to dashboard Cite

Recent developments in next-generation sequencing technologies have greatly facilitated the study of whole transcriptomes in model and non-model species. Studying the transcriptome and how it changes across a variety of biological conditions has had major implications for our understanding of how the genome is regulated in different contexts, and how to interpret adaptations and the phenotype of an organism. The aim of this review is to highlight the potential of these new technologies for the study of avian transcriptomics, and to summarise how transcriptomics has been applied in ornithology. A total of 81 peer-reviewed scientific articles that used transcriptomics to answer questions within a broad range of study areas in birds are used as examples throughout the review. We further provide a quick guide to highlight the most important points which need to be take into account when planning a transcriptomic study in birds, and discuss how researchers with little background in molecular biology can avoid potential pitfalls. Suggestions for further reading are supplied throughout. We also discuss possible future developments in the technology platforms used for ribonucleic acid sequencing. By summarising how these novel technologies can be used to answer questions that have long been asked by ornithologists, we hope to bridge the gap between traditional ornithology and genomics, and to stimulate more interdisciplinary research.

show abstract

Population genetics and phylogeographic history of the insular lizard Podarcis lilfordi (Gunther, 1874) from the Balearic Islands based on genome‐wide polymorphic data

Otalora,

Riera,

Tavecchia

et al. 2024

Ecology and Evolution

View full text Add to dashboard Cite

Islands provide a great system to explore the processes that maintain genetic diversity and promote local adaptation. We explored the genomic diversity of the Balearic lizard Podarcis lilfordi, an endemic species characterized by numerous small insular populations with large phenotypic diversity. Using the newly available genome for this species, we characterized more than 300,000 SNPs, merging genotyping‐by‐sequencing (GBS) data with previously published restriction site‐associated DNA sequencing (RAD‐Seq) data, providing a dataset of 16 island populations (191 individuals) across the range of species distribution (Menorca, Mallorca, and Cabrera). Results indicate that each islet hosts a well‐differentiated population (FST = 0.247 ± 0.09), with no recent immigration/translocation events. Contrary to expectations, most populations harbor a considerable genetic diversity (mean nucleotide diversity, Pi = 0.144 ± 0.021), characterized by overall low inbreeding values (FIS < 0.1). While the genetic diversity significantly decreased with decreasing islet surface, maintenance of substantial genetic diversity even in tiny islets suggests variable selection or other mechanisms that buffer genetic drift. Maximum‐likelihood tree based on concatenated SNP data confirmed the existence of the two major independent lineages of Menorca and Mallorca/Cabrera. Multiple lines of evidence, including admixture and root testing, robustly placed the origin of the species in the Mallorca Island, rather than in Menorca. Outlier analysis mainly retrieved a strong signature of genome differentiation between the two major archipelagos, especially in the sexual chromosome Z. A set of proteins were target of multiple outliers and primarily associated with binding and catalytic activity, providing interesting candidates for future selection studies. This study provides the framework to explore crucial aspects of the genetic basis of phenotypic divergence and insular adaptation.

show abstract

Variation in promiscuity and sexual selection drives avian rate of Faster‐Z evolution

Cited by 92 publications

References 105 publications

Sexual selection drives evolution and rapid turnover of male gene expression

Sexual selection drives evolution and rapid turnover of male gene expression

Avian transcriptomics: opportunities and challenges

Population genetics and phylogeographic history of the insular lizard Podarcis lilfordi (Gunther, 1874) from the Balearic Islands based on genome‐wide polymorphic data

Contact Info

Product

Resources

About