Effects of ploidy and sex-locus genotype on gene expression patterns in the fire ant Solenopsis invicta.

Détails

Ressource 1Télécharger: BIB_45EBC2A70F39.P001.pdf (661.55 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_45EBC2A70F39
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Effects of ploidy and sex-locus genotype on gene expression patterns in the fire ant Solenopsis invicta.
Périodique
Proceedings of the Royal Society. B Biological Sciences
Auteur(s)
Nipitwattanaphon M., Wang J., Ross K.G., Riba-Grognuz O., Wurm Y., Khurewathanakul C., Keller L.
ISSN
1471-2954 (Electronic)
ISSN-L
0962-8452
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
281
Numéro
1797
Pages
20141776
Langue
anglais
Résumé
Males in many animal species differ greatly from females in morphology, physiology and behaviour. Ants, bees and wasps have a haplodiploid mechanism of sex determination whereby unfertilized eggs become males while fertilized eggs become females. However, many species also have a low frequency of diploid males, which are thought to develop from diploid eggs when individuals are homozygous at one or more sex determination loci. Diploid males are morphologically similar to haploids, though often larger and typically sterile. To determine how ploidy level and sex-locus genotype affect gene expression during development, we compared expression patterns between diploid males, haploid males and females (queens) at three developmental timepoints in Solenopsis invicta. In pupae, gene expression profiles of diploid males were very different from those of haploid males but nearly identical to those of queens. An unexpected shift in expression patterns emerged soon after adult eclosion, with diploid male patterns diverging from those of queens to resemble those of haploid males, a pattern retained in older adults. The finding that ploidy level effects on early gene expression override sex effects (including genes implicated in sperm production and pheromone production/perception) may explain diploid male sterility and lack of worker discrimination against them during development.
Mots-clé
Hymenoptera, complementary sex-determination, diploid male, doublesex, microarray, sex determination
Pubmed
Web of science
Création de la notice
24/09/2014 16:55
Dernière modification de la notice
20/08/2019 13:51
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