Direct Evidence for Crossover and Chromatid Interference in Meiosis of Two Plant Hybrids (Lolium Multiflorum × Festuca Pratensis And Allium Cepa × A. Roylei)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00120875" target="_blank" >RIV/00216224:14310/21:00120875 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1093/jxb/eraa455" target="_blank" >https://doi.org/10.1093/jxb/eraa455</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/jxb/eraa455" target="_blank" >10.1093/jxb/eraa455</a>

Result language

angličtina

Original language name

Direct Evidence for Crossover and Chromatid Interference in Meiosis of Two Plant Hybrids (Lolium Multiflorum × Festuca Pratensis And Allium Cepa × A. Roylei)

Original language description

Crossing over, apart from its strictly genetic role, also performs a critical mechanical function, by bonding homologues in meiosis. Hence, it is responsible for an orderly reduction of the chromosome number. As such, it is strictly controlled in frequency and distribution. The well-known crossover control is the positive crossover interference which reduces the probability of a crossover in the vicinity of an already formed crossover. A poorly studied aspect of the control is the chromatid interference. Such analyses are possible in very few organisms as they require observation of all four products of a single meiosis. Here, we provide direct evidence of chromatid interference. Using in situ probing in two interspecific plant hybrids (Lolium multiflorum × Festuca pratensis and Allium cepa × A. roylei) during anaphase I, we demonstrate that the involvement of four chromatids in double crossovers is significantly more frequent than expected (64% vs. 25%). We also provide a physical measure of the crossover interference distance, covering ca. 30-40% of the relative chromosome arm length, and show that the centromere acts as a barrier for crossover interference. The two arms of a chromosome appear to act as independent units in the process of crossing over. Chromatid interference has to be seriously addressed in genetic mapping approaches and further studies.

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

—

OECD FORD branch

10603 - Genetics and heredity (medical genetics to be 3)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Journal of Experimental Botany

ISSN

0022-0957

e-ISSN

1460-2431

Volume of the periodical

72

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

254-267

UT code for WoS article

000648886400010

EID of the result in the Scopus database

2-s2.0-85102929034