The chromatin determinants and Ph1 gene effect at wheat sites with contrasting recombination frequency

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F23%3A00577906" target="_blank" >RIV/61389030:_____/23:00577906 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/23:73619459

Result on the web

<a href="https://doi.org/10.1016/j.jare.2023.01.002" target="_blank" >https://doi.org/10.1016/j.jare.2023.01.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jare.2023.01.002" target="_blank" >10.1016/j.jare.2023.01.002</a>

Result language

angličtina

Original language name

The chromatin determinants and Ph1 gene effect at wheat sites with contrasting recombination frequency

Original language description

Introduction: Meiotic recombination is one of the most important processes of evolution and adaptation to environmental conditions. Even though there is substantial knowledge about proteins involved in the process, targeting specific DNA loci by the recombination machinery is not well understood. Objectives: This study aims to investigate a wheat recombination hotspot (H1) in comparison with a “regular” recombination site (Rec7) on the sequence and epigenetic level in conditions with functional and non-functional Ph1 locus. Methods: The DNA sequence, methylation pattern, and recombination frequency were analyzed for the H1 and Rec7 in three mapping populations derived by crossing introgressive wheat line 8.1 with cv. Chinese Spring (with Ph1 and ph1 alleles) and cv. Tähti. Results: The H1 and Rec7 loci are 1.586 kb and 2.538 kb long, respectively. High-density mapping allowed to delimit the Rec7 and H1 to 19 and 574 bp and 593 and 571 bp CO sites, respectively. A new method (ddPing) allowed screening recombination frequency in almost 66 thousand gametes. The screening revealed a 5.94-fold higher recombination frequency at the H1 compared to the Rec7. The H1 was also found out of the Ph1 control, similarly as gamete distortion. The recombination was strongly affected by larger genomic rearrangements but not by the SNP proximity. Moreover, chromatin markers for open chromatin and DNA hypomethylation were found associated with crossover occurrence except for the CHH methylation. Conclusion: Our results, for the first time, allowed study of wheat recombination directly on sequence, shed new light on chromatin landmarks associated with particular recombination sites, and deepened knowledge about role of the Ph1 locus in control of wheat recombination processes. The results are suggesting more than one recombination control pathway. Understanding this phenomenon may become a base for more efficient wheat genome manipulation, gene pool enrichment, breeding, and study processes of recombination itself.

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

10608 - Biochemistry and molecular biology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Advanced Research

ISSN

2090-1232

e-ISSN

2090-1224

Volume of the periodical

53

Issue of the periodical within the volume

Nov

Country of publishing house

EG - EGYPT

Number of pages

11

Pages from-to

75-85

UT code for WoS article

001102834900001

EID of the result in the Scopus database

2-s2.0-85146132437