Sexual dimorphism and the evolution of sex-biased gene expression in the brown alga ectocarpus

Molecular Biology and Evolution
Agnieszka LipinskaSusana M Coelho

Abstract

Males and females often have marked phenotypic differences, and the expression of these dissimilarities invariably involves sex differences in gene expression. Sex-biased gene expression has been well characterized in animal species, where a high proportion of the genome may be differentially regulated in males and females during development. Male-biased genes tend to evolve more rapidly than female-biased genes, implying differences in the strength of the selective forces acting on the two sexes. Analyses of sex-biased gene expression have focused on organisms that exhibit separate sexes during the diploid phase of the life cycle (diploid sexual systems), but the genetic nature of the sexual system is expected to influence the evolutionary trajectories of sex-biased genes. We analyze here the patterns of sex-biased gene expression in Ectocarpus, a brown alga with haploid sex determination (dioicy) and a low level of phenotypic sexual dimorphism. In Ectocarpus, female-biased genes were found to be evolving as rapidly as male-biased genes. Moreover, genes expressed at fertility showed faster rates of evolution than genes expressed in immature gametophytes. Both male- and female-biased genes had a greater proportion of sites expe...Continue Reading

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Citations

Jan 6, 2016·BMC Evolutionary Biology·Agnieszka P LipinskaOlivier De Clerck
Aug 8, 2015·Molecular Biology and Evolution·Rémy LuthringerSusana M Coelho
May 30, 2016·Comptes rendus biologies·Laure Mignerot, Susana M Coelho
Sep 14, 2016·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jussi LehtonenGeoff A Parker
Oct 27, 2015·PloS One·Agnieszka P LipinskaSusana M Coelho
Aug 31, 2016·Annual Review of Genetics·Sonja Grath, John Parsch
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Dec 28, 2018·Molecular Biology and Evolution·Christelle FraïsseBeatriz Vicoso
Jan 23, 2019·The New Phytologist·Susana M CoelhoJ Mark Cock
Feb 23, 2019·BMC Evolutionary Biology·Carrie A Whittle, Cassandra G Extavour
Nov 30, 2018·Nature Communications·Monia T RussoMaria I Ferrante
Jun 1, 2019·Annual Review of Microbiology·James Umen, Susana Coelho
Aug 16, 2017·Nature Ecology & Evolution·Judith E Mank
Feb 16, 2019·Genome Biology·Agnieszka P LipinskaSusana M Coelho
Sep 3, 2020·EvoDevo·Susana M CoelhoJ Mark Cock
Jun 21, 2017·Genetics·Carrie A Whittle, Cassandra G Extavour
Feb 8, 2020·Scientific Reports·Ji Won ChoiHwan Su Yoon
Oct 16, 2016·Genome Biology and Evolution·Liandong YangShunping He
Jun 10, 2017·Genome Biology·Agnieszka P LipinskaSusana M Coelho
Jul 28, 2020·Trends in Genetics : TIG·Amy L Dapper, Michael J Wade
Jun 13, 2021·Science Advances·Alexander AndersVictor Sourjik
Jun 8, 2021·Journal of Evolutionary Biology·Svenja HeeschSusana M Coelho
Jun 3, 2021·The New Phytologist·Yacine BadisJ Mark Cock

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