Meiotic gene evolution: can you teach a new dog new tricks?
Meiosis, the basis of sex, evolved through iterative gene duplications. To understand whether subsequent duplications have further enriched the core meiotic "tool-kit," we investigated the fate of meiotic gene duplicates following whole genome duplication (WGD), a common occurrence in eukaryotes. We show that meiotic genes return to a single copy more rapidly than genome-wide average in angiosperms, one of the lineages in which WGD is most vividly exemplified. The rate at which duplicates are lost decreases through time, a tendency that is also observed genome-wide and may thus prove to be a general trend post-WGD. The sharpest decline is observed for the subset of genes mediating meiotic recombination; however, we found no evidence that the presence of these duplicates is counterselected in two recent polyploid crops selected for fertility. We therefore propose that their loss is passive, highlighting how quickly WGDs are resolved in the absence of selective duplicate retention.
INRA, UMR1318, Institut Jean-Pierre Bourgin, Versailles, FranceAgroParisTech, Institut Jean-Pierre Bourgin, Versailles, France.
Andrew H
AH
Lloyd
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, France.
Marion
M
Ranoux
UMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Sonia
S
Vautrin
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, FranceUMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Natasha
N
Glover
INRA UPR 1258, Centre National des Ressources Génomiques Végétales, Castanet-Tolosan, France.
Joelle
J
Fourment
INRA, UMR1318, Institut Jean-Pierre Bourgin, Versailles, FranceAgroParisTech, Institut Jean-Pierre Bourgin, Versailles, France.
Delphine
D
Charif
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, FranceUMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Frederic
F
Choulet
INRA, UMR1349-IGEPP, Le Rheu, France.
Gilles
G
Lassalle
INRA UPR 1258, Centre National des Ressources Génomiques Végétales, Castanet-Tolosan, France.
William
W
Marande
INRA, UMR1318, Institut Jean-Pierre Bourgin, Versailles, FranceAgroParisTech, Institut Jean-Pierre Bourgin, Versailles, France.
Joseph
J
Tran
INRA, UMR1318, Institut Jean-Pierre Bourgin, Versailles, FranceAgroParisTech, Institut Jean-Pierre Bourgin, Versailles, France.
Fabienne
F
Granier
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, FranceUMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Lise
L
Pingault
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, FranceUMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Arnaud
A
Remay
INRA, UMR1318, Institut Jean-Pierre Bourgin, Versailles, FranceAgroParisTech, Institut Jean-Pierre Bourgin, Versailles, France.
Catherine
C
Marquis
INRA-CNRS-UEVE, Unité de Recherche en Génomique Végétale, Evry, France.
Harry
H
Belcram
INRA-CNRS-UEVE, Unité de Recherche en Génomique Végétale, Evry, France.
Boulos
B
Chalhoub
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, FranceUMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Catherine
C
Feuillet
INRA UPR 1258, Centre National des Ressources Génomiques Végétales, Castanet-Tolosan, France.
Hélène
H
Bergès
INRA UMR1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand, FranceUMR1095 Genetics Diversity and Ecophysiology of Cereals, University Blaise Pascal, Clermont-Ferrand, France.
Pierre
P
Sourdille
INRA, UMR1318, Institut Jean-Pierre Bourgin, Versailles, FranceAgroParisTech, Institut Jean-Pierre Bourgin, Versailles, France eric.jenczewski@versailles.inra.fr.
Eric
E
Jenczewski
D019143:Evolution, Molecular; D020440:Gene Duplication; D018745:Genome, Plant; D059765:Homologous Recombination; D019684:Magnoliopsida / Q000235:genetics*; D008540:Meiosis
duplication; evolution; genome; meiosis; polyploidy; whole genome duplication