Evolution and functioning of an X–A balance sex-determining system in hops

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F14864347%3A_____%2F25%3AN0000009" target="_blank" >RIV/14864347:_____/25:N0000009 - isvavai.cz</a>

Result on the web

<a href="https://www.nature.com/articles/s41477-025-02017-6" target="_blank" >https://www.nature.com/articles/s41477-025-02017-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41477-025-02017-6" target="_blank" >10.1038/s41477-025-02017-6</a>

Result language

angličtina

Original language name

Evolution and functioning of an X–A balance sex-determining system in hops

Original language description

Chromosomal sex-determining systems with male heterogamety include actively male-determining-Y and X–A balance systems, both of which are found in animals and plants. The sex-determining genes have been identified in several active-Y plant systems, but the evolution and functioning of X–A balance systems remains mysterious. Here we sequenced and compared the genomes of two hop species. The evolution of the hop X–A balance system involved an ancient recombination suppression event across a large X chromosome region shared by both species. In one species, an autosome fused to this ancestral sex chromosome, and recombination was subsequently suppressed again. The two evolutionary strata created in this neo-X have degenerated to different degrees and evolved correspondingly different dosage compensation levels that correlate with histone modification patterns. Finally, we identified an X-specific ETR1-like ethylene receptor in the ancestral X region. Its dosage may affect sex determination, as part of the counting mechanism of this X–A balance system.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40401 - Agricultural biotechnology and food biotechnology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nature Plants

ISSN

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e-ISSN

2055-0278

Volume of the periodical

11

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

1339-1352

UT code for WoS article

001511353700001

EID of the result in the Scopus database

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