Heejin Kim, Jaeil Kim, Namil Son, Pallas Kuo, Chris Morgan, Aurélie Chambon, Dohwan Byun, Jihye Park, Youngkyung Lee, Yeong Mi Park, John A Fozard, Julie Guérin, Aurélie Hurel, Christophe Lambing, Martin Howard, Ildoo Hwang, Raphael Mercier, Mathilde Grelon, Ian R Henderson, Kyuha Choi
Meiosis is a specialized eukaryotic division that produces genetically diverse gametes for sexual reproduction. During meiosis, homologous chromosomes pair and undergo reciprocal exchanges, called crossovers, which recombine genetic variation. Meiotic crossovers are stringently controlled with at least one obligate exchange forming per chromosome pair, while closely spaced crossovers are inhibited by interference. In Arabidopsis, crossover positions can be explained by a diffusion-mediated coarsening model, in which large, approximately evenly spaced foci of the pro-crossover E3 ligase HEI10 grow at the expense of smaller, closely spaced clusters...
February 20, 2024: Nature Plants