Sex-Biased Gene Expression and Dosage Compensation on the Artemia franciscana Z-Chromosome.
Authors: Huylmans, A.K., Toups, M.A., Macon, A., Gammerdinger, W.J. and Vicoso, B.
Journal: Genome Biol Evol
Volume: 11
Issue: 4
Pages: 1033-1044
eISSN: 1759-6653
DOI: 10.1093/gbe/evz053
Abstract:Males and females of Artemia franciscana, a crustacean commonly used in the aquarium trade, are highly dimorphic. Sex is determined by a pair of ZW chromosomes, but the nature and extent of differentiation of these chromosomes is unknown. Here, we characterize the Z chromosome by detecting genomic regions that show lower genomic coverage in female than in male samples, and regions that harbor an excess of female-specific SNPs. We detect many Z-specific genes, which no longer have homologs on the W, but also Z-linked genes that appear to have diverged very recently from their existing W-linked homolog. We assess patterns of male and female expression in two tissues with extensive morphological dimorphism, gonads, and heads. In agreement with their morphology, sex-biased expression is common in both tissues. Interestingly, the Z chromosome is not enriched for sex-biased genes, and seems to in fact have a mechanism of dosage compensation that leads to equal expression in males and in females. Both of these patterns are contrary to most ZW systems studied so far, making A. franciscana an excellent model for investigating the interplay between the evolution of sexual dimorphism and dosage compensation, as well as Z chromosome evolution in general.
Source: PubMed
Sex-Biased Gene Expression and Dosage Compensation on the <i>Artemia franciscana</i> Z-Chromosome
Authors: Huylmans, A.K., Toups, M.A., Macon, A., Gammerdinger, W.J. and Vicoso, B.
Journal: GENOME BIOLOGY AND EVOLUTION
Volume: 11
Issue: 4
Pages: 1033-1044
ISSN: 1759-6653
DOI: 10.1093/gbe/evz053
Source: Web of Science (Lite)
Sex-biased gene expression and dosage compensation on the Artemia franciscana Z chromosome
Authors: Huylmans, A.K., Toups, M.A., Gammerdinger, W.J., Macon, A. and Vicoso, B.
Journal: Genome Biology and Evolution
Volume: 11
Pages: 1033-1044
Publisher: Oxford University Press
ISSN: 1759-6653
Source: Manual
Sex-Biased Gene Expression and Dosage Compensation on the Artemia franciscana Z-Chromosome.
Authors: Huylmans, A.K., Toups, M.A., Macon, A., Gammerdinger, W.J. and Vicoso, B.
Journal: Genome biology and evolution
Volume: 11
Issue: 4
Pages: 1033-1044
eISSN: 1759-6653
ISSN: 1759-6653
DOI: 10.1093/gbe/evz053
Abstract:Males and females of Artemia franciscana, a crustacean commonly used in the aquarium trade, are highly dimorphic. Sex is determined by a pair of ZW chromosomes, but the nature and extent of differentiation of these chromosomes is unknown. Here, we characterize the Z chromosome by detecting genomic regions that show lower genomic coverage in female than in male samples, and regions that harbor an excess of female-specific SNPs. We detect many Z-specific genes, which no longer have homologs on the W, but also Z-linked genes that appear to have diverged very recently from their existing W-linked homolog. We assess patterns of male and female expression in two tissues with extensive morphological dimorphism, gonads, and heads. In agreement with their morphology, sex-biased expression is common in both tissues. Interestingly, the Z chromosome is not enriched for sex-biased genes, and seems to in fact have a mechanism of dosage compensation that leads to equal expression in males and in females. Both of these patterns are contrary to most ZW systems studied so far, making A. franciscana an excellent model for investigating the interplay between the evolution of sexual dimorphism and dosage compensation, as well as Z chromosome evolution in general.
Source: Europe PubMed Central