Expression Evolution of Ancestral XY Gametologs across All Major Groups of Placental Mammals


Por: Martinez-Pacheco, Monica, Tenorio, Mariela, Almonte, Laura, Fajardo, Vicente, Godinez, Alan, Fernandez, Diego, Cornejo-Paramo, Paola, Diaz-Barba, Karina, Halbert, Jean, Liechti, Angelica, Szekely, Tamas, Urrutia, Araxi O., Cortez, Diego

Publicada: 1 nov 2020
Resumen:
Placental mammals present 180 million-year-old Y chromosomes that have retained a handful of dosage-sensitive genes. However, the expression evolution of Y-linked genes across placental groups has remained largely unexplored. Here, we expanded the number of Y gametolog sequences by analyzing ten additional species from previously unexplored groups. We detected seven remarkably conserved genes across 25 placental species with known Y repertoires. We then used RNA-seq data from 17 placental mammals to unveil the expression evolution of XY gametologs. We found that Y gametologs followed, on average, a 3-fold expression loss and that X gametologs also experienced some expression reduction, particularly in primates. Y gametologs gained testis specificity through an accelerated expression decay in somatic tissues. Moreover, despite the substantial expression decay of Y genes, the combined expression of XY gametologs in males is higher than that of both X gametologs in females. Finally, our work describes several features of the Y chromosome in the last common mammalian ancestor.

Filiaciones:
Martinez-Pacheco, Monica:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Tenorio, Mariela:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Almonte, Laura:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Fajardo, Vicente:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Godinez, Alan:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Fernandez, Diego:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Cornejo-Paramo, Paola:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Diaz-Barba, Karina:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico

Halbert, Jean:
 Univ Lausanne, Ctr Integrat Genom, Lausanne, Switzerland

Liechti, Angelica:
 Univ Lausanne, Ctr Integrat Genom, Lausanne, Switzerland

Szekely, Tamas:
 Univ Bath, Milner Ctr Evolut, Dept Biol & Biochem, Bath, Avon, England

Urrutia, Araxi O.:
 Univ Nacl Autonoma Mexico, Ecol Inst, Mexico City, DF, Mexico

 Univ Bath, Milner Ctr Evolut, Dept Biol & Biochem, Bath, Avon, England

Cortez, Diego:
 UNAM, Ctr Genome Sci, Cuernavaca, Morelos, Mexico
ISSN: 17596653





GENOME BIOLOGY AND EVOLUTION
Editorial
Oxford University Press, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 12 Número: 11
Páginas: 2015-2028
WOS Id: 000599652700010
ID de PubMed: 32790864