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Castellani, M.* ; Zhang, M.* ; Thangavel, G.* ; Mata-Sucre, Y.* ; Lux, T. ; Campoy, J.A.* ; Marek, M.* ; Huettel, B.* ; Sun, H.* ; Mayer, K.F.X. ; Schneeberger, K.* ; Marques, A.R.*

Meiotic recombination dynamics in plants with repeat-based holocentromeres shed light on the primary drivers of crossover patterning.

Nat. Plants 10, 423-438 (2024)
Verlagsversion DOI PMC
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
Centromeres strongly affect (epi)genomic architecture and meiotic recombination dynamics, influencing the overall distribution and frequency of crossovers. Here we show how recombination is regulated and distributed in the holocentric plant Rhynchospora breviuscula, a species with diffused centromeres. Combining immunocytochemistry, chromatin analysis and high-throughput single-pollen sequencing, we discovered that crossover frequency is distally biased, in sharp contrast to the diffused distribution of hundreds of centromeric units and (epi)genomic features. Remarkably, we found that crossovers were abolished inside centromeric units but not in their proximity, indicating the absence of a canonical centromere effect. We further propose that telomere-led synapsis of homologues is the feature that best explains the observed recombination landscape. Our results hint at the primary influence of mechanistic features of meiotic pairing and synapsis rather than (epi)genomic features and centromere organization in determining the distally biased crossover distribution in R. breviuscula, whereas centromeres and (epi)genetic properties only affect crossover positioning locally.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Complex Protein Zyp1; Double-strand Breaks; Chromosome Synapsis; Ubiquitin Ligase; Meiosis; Genome; Arabidopsis; Alignment; Chromatin; Rna
ISSN (print) / ISBN 2055-026X
e-ISSN 2055-0278
Zeitschrift Nature Plants
Quellenangaben Band: 10, Heft: 3, Seiten: 423-438 Artikelnummer: , Supplement: ,
Verlag Nature Publishing Group
Verlagsort London
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Plant Genome and Systems Biology (PGSB)
Förderungen PROBRAL (Coordination Foundation for the Improvement of Higher Education Personnel/DAAD) programme
German Academic Exchange Service (DAAD), India
DFG
European Union (European Research Council Starting Grant)
Deutsche Forschungsgemeinschaft (DFG)
Max Planck Society
Deutsche Forschungsgemeinschaft (German Research Foundation)