Počet záznamů: 1
The chromatin determinants and Ph1 gene effect at wheat sites with contrasting recombination frequency
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SYSNO ASEP 0577906 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The chromatin determinants and Ph1 gene effect at wheat sites with contrasting recombination frequency Tvůrce(i) Majka, Maciej (UEB-Q) ORCID
Janáková, Eva (UEB-Q) ORCID
Jakobson, I. (EE)
Järve, K. (EE)
Cápal, Petr (UEB-Q) RID, ORCID
Korchanová, Zuzana (UEB-Q) ORCID
Lampar, Adam (UEB-Q) ORCID
Juračka, Jakub (UEB-Q) ORCID
Valárik, Miroslav (UEB-Q) RID, ORCIDCelkový počet autorů 9 Zdroj.dok. Journal of Advanced Research - ISSN 2090-1232
Roč. 53, Nov (2023), s. 75-85Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. EG - Egypt Klíč. slova Crossovers ; DNA methylation ; Hotspot ; Ph1 locus ; Recombination ; Wheat Obor OECD Biochemistry and molecular biology CEP GA18-11688S GA ČR - Grantová agentura ČR QK1710302 GA MZe - Ministerstvo zemědělství QK22010293 GA MZe - Ministerstvo zemědělství EF16_019/0000827 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UEB-Q - RVO:61389030 UT WOS 001102834900001 EID SCOPUS 85146132437 DOI https://doi.org/10.1016/j.jare.2023.01.002 Anotace 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. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2024 Elektronická adresa https://doi.org/10.1016/j.jare.2023.01.002
Počet záznamů: 1