The evolution of huge Y chromosomes in Coccinia grandis and its sister, Coccinia schimperi

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081707%3A_____%2F22%3A00557231" target="_blank" >RIV/68081707:_____/22:00557231 - isvavai.cz</a>

Výsledek na webu

<a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2021.0294" target="_blank" >https://royalsocietypublishing.org/doi/10.1098/rstb.2021.0294</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rstb.2021.0294" target="_blank" >10.1098/rstb.2021.0294</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The evolution of huge Y chromosomes in Coccinia grandis and its sister, Coccinia schimperi

Popis výsledku v původním jazyce

Microscopically dimorphic sex chromosomes in plants are rare, reducing our ability to study them. One difficulty has been the paucity of cultivatable species pairs for cytogenetic, genomic and experimental work. Here, we study the newly recognized sisters Coccinia grandis and Coccinia schimperi, both with large Y chromosomes as we here show for Co. schimperi. We built genetic maps for male and female Co. grandis using a full-sibling family, inferred gene sex-linkage, and, with Co. schimperi transcriptome data, tested whether X- and Y-alleles group by species or by sex. Most sex-linked genes for which we could include outgroups grouped the X- and Y-alleles by species, but some 10% instead grouped the two species' X-alleles. There was no relationship between XY synonymous-site divergences in these genes and gene position on the non-recombining part of the X, suggesting recombination arrest shortly before or after species divergence, here dated to about 3.6 Ma. Coccinia grandis and Co. schimperi are the species pair with the most heteromorphic sex chromosomes in vascular plants (the condition in their sister remains unknown), and future work could use them to study mechanisms of Y chromosome enlargement and parallel degeneration, or to test Haldane's rule about lower hybrid fitness in the heterogametic sex.This article is part of the theme issue 'Sex determination and sex chromosome evolution in land plants'.

Název v anglickém jazyce

The evolution of huge Y chromosomes in Coccinia grandis and its sister, Coccinia schimperi

Popis výsledku anglicky

Microscopically dimorphic sex chromosomes in plants are rare, reducing our ability to study them. One difficulty has been the paucity of cultivatable species pairs for cytogenetic, genomic and experimental work. Here, we study the newly recognized sisters Coccinia grandis and Coccinia schimperi, both with large Y chromosomes as we here show for Co. schimperi. We built genetic maps for male and female Co. grandis using a full-sibling family, inferred gene sex-linkage, and, with Co. schimperi transcriptome data, tested whether X- and Y-alleles group by species or by sex. Most sex-linked genes for which we could include outgroups grouped the X- and Y-alleles by species, but some 10% instead grouped the two species' X-alleles. There was no relationship between XY synonymous-site divergences in these genes and gene position on the non-recombining part of the X, suggesting recombination arrest shortly before or after species divergence, here dated to about 3.6 Ma. Coccinia grandis and Co. schimperi are the species pair with the most heteromorphic sex chromosomes in vascular plants (the condition in their sister remains unknown), and future work could use them to study mechanisms of Y chromosome enlargement and parallel degeneration, or to test Haldane's rule about lower hybrid fitness in the heterogametic sex.This article is part of the theme issue 'Sex determination and sex chromosome evolution in land plants'.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10608 - Biochemistry and molecular biology

Projekt

<a href="/cs/project/GJ19-02476Y" target="_blank" >GJ19-02476Y: Identifikace a charakterizace genů podílejících se na determinaci pohlavnosti u Silene latifolia</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Philosophical Transactions of the Royal Society B-Biological Sciences

ISSN

0962-8436

e-ISSN

1471-2970

Svazek periodika

377

Číslo periodika v rámci svazku

1850

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

20210294

Kód UT WoS článku

000781348400014

EID výsledku v databázi Scopus

2-s2.0-85126841909