Unknown

Dataset Information

0

Modulation of Prdm9-controlled meiotic chromosome asynapsis overrides hybrid sterility in mice.


ABSTRACT: Hybrid sterility is one of the reproductive isolation mechanisms leading to speciation. Prdm9, the only known vertebrate hybrid-sterility gene, causes failure of meiotic chromosome synapsis and infertility in male hybrids that are the offspring of two mouse subspecies. Within species, Prdm9 determines the sites of programmed DNA double-strand breaks (DSBs) and meiotic recombination hotspots. To investigate the relation between Prdm9-controlled meiotic arrest and asynapsis, we inserted random stretches of consubspecific homology on several autosomal pairs in sterile hybrids, and analyzed their ability to form synaptonemal complexes and to rescue male fertility. Twenty-seven or more megabases of consubspecific (belonging to the same subspecies) homology fully restored synapsis in a given autosomal pair, and we predicted that two or more DSBs within symmetric hotspots per chromosome are necessary for successful meiosis. We hypothesize that impaired recombination between evolutionarily diverged chromosomes could function as one of the mechanisms of hybrid sterility occurring in various sexually reproducing species.

SUBMITTER: Gregorova S 

PROVIDER: S-EPMC5902161 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

altmetric image

Publications

Modulation of <i>Prdm9-</i>controlled meiotic chromosome asynapsis overrides hybrid sterility in mice.

Gregorova Sona S   Gergelits Vaclav V   Chvatalova Irena I   Bhattacharyya Tanmoy T   Valiskova Barbora B   Fotopulosova Vladana V   Jansa Petr P   Wiatrowska Diana D   Forejt Jiri J  

eLife 20180314


Hybrid sterility is one of the reproductive isolation mechanisms leading to speciation. <i>Prdm9</i>, the only known vertebrate hybrid-sterility gene, causes failure of meiotic chromosome synapsis and infertility in male hybrids that are the offspring of two mouse subspecies. Within species, <i>Prdm9</i> determines the sites of programmed DNA double-strand breaks (DSBs) and meiotic recombination hotspots. To investigate the relation between <i>Prdm9</i>-controlled meiotic arrest and asynapsis, w  ...[more]

Similar Datasets

| S-EPMC6324875 | biostudies-literature
| S-EPMC2483523 | biostudies-literature
| S-EPMC4756437 | biostudies-literature
| S-EPMC6827376 | biostudies-literature
| S-EPMC4841592 | biostudies-literature
| S-EPMC7743643 | biostudies-literature
| S-EPMC3486856 | biostudies-other
2014-06-01 | GSE49462 | GEO
| S-EPMC4624946 | biostudies-literature
2014-06-01 | E-GEOD-49462 | biostudies-arrayexpress