Uncoupling of sexual reproduction from homologous recombination in homozygous Oenothera species

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F11%3A00175914" target="_blank" >RIV/62156489:43410/11:00175914 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Uncoupling of sexual reproduction from homologous recombination in homozygous Oenothera species

Popis výsledku v původním jazyce

Salient features of the first meiotic division are independent segregation of chromosomes and homologous recombination (HR). In no sexually reproducing, homozygous species studied to date HR is absent. In this study, we constructed the first linkage mapsof homozygous, bivalent-forming Oenothera species and provide evidence that HR was exclusively confined to the chromosome ends of all linkage groups in our population. Co-segregation of complementary DNA-based markers with the major group of AFLP markers indicates that HR has only a minor role in generating genetic diversity of this taxon despite its efficient adaptation capability. Uneven chromosome condensation during meiosis in Oenothera may account for restriction of HR. The use of plants with ancient chromosomal arm arrangement demonstrates that limitation of HR occurred before and independent from species hybridizations and reciprocal translocations of chromosome arms-a phenomenon, which is widespread in the genus. We propose tha

Název v anglickém jazyce

Uncoupling of sexual reproduction from homologous recombination in homozygous Oenothera species

Popis výsledku anglicky

Salient features of the first meiotic division are independent segregation of chromosomes and homologous recombination (HR). In no sexually reproducing, homozygous species studied to date HR is absent. In this study, we constructed the first linkage mapsof homozygous, bivalent-forming Oenothera species and provide evidence that HR was exclusively confined to the chromosome ends of all linkage groups in our population. Co-segregation of complementary DNA-based markers with the major group of AFLP markers indicates that HR has only a minor role in generating genetic diversity of this taxon despite its efficient adaptation capability. Uneven chromosome condensation during meiosis in Oenothera may account for restriction of HR. The use of plants with ancient chromosomal arm arrangement demonstrates that limitation of HR occurred before and independent from species hybridizations and reciprocal translocations of chromosome arms-a phenomenon, which is widespread in the genus. We propose tha

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Heredity

ISSN

0018-067X

e-ISSN

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Svazek periodika

107

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

87-94

Kód UT WoS článku

291635500011

EID výsledku v databázi Scopus

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