ArticleThe Plant cell2024
ASYNAPSIS3 has diverse dosage-dependent effects on meiotic crossover formation in Brassica napus.
Article in The Plant cell, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Finding the right balance: ASY1 recruits opposing regulators to finetune DMC1 function during meiosis.The Plant cell · 2026Article
- The meiotic achilles' heel: vulnerability and resilience under environmental stress.Protoplasma · 2026Review
- The HORMA-domain protein ASY1 recruits the plant-specific cyclin SDS to promote DMC1-mediated meiotic recombination.The Plant cell · 2026Article
- Crossover control: A key to unlocking genetic diversity in plant breeding.Journal of integrative plant biology · 2026Review
- An overview of recent advances on wheat homologous and homoeologous recombination.Journal of experimental botany · 2026Review
- ZSL Orchestrates Synaptonemal Complex Assembly as a Central Region Scaffold to Ensure Synapsis Fidelity and Crossover Control in Polyploid Meiosis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Improved synapsis dynamics accompany meiotic stability inProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Genomic Divergence Shaped the Genetic Regulation of Meiotic Homologous Recombination in Brassica Allopolyploids.Molecular biology and evolution · 2025Article
- The synaptonemal complex stabilizes meiosis in allotetraploid Brassica napus and autotetraploid Arabidopsis thaliana.The New phytologist · 2025Article
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- The conserved ATPase PCH-2 controls the number and distribution of crossovers by antagonizing their formation inbioRxiv : the preprint server for biology · 2024Article
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Authors and funding
9 authors.
Funding
Abstract
Crossovers create genetic diversity and are required for equal chromosome segregation during meiosis. Crossover number and distribution are highly regulated by different mechanisms that are not yet fully understood, including crossover interference. The chromosome axis is crucial for crossover formation. Here, we explore the function of the axis protein ASYNAPSIS3. To this end, we use the allotetraploid species Brassica napus; due to its polyploid nature, this system allows a fine-grained dissection of the dosage of meiotic regulators. The simultaneous mutation of all 4 ASY3 alleles results in defective synapsis and drastic reduction of crossovers, which is largely rescued by the presence of only one functional ASY3 allele. Crucially, while the number of class I crossovers in mutants with 2 functional ASY3 alleles is comparable to that in wild type, this number is significantly increased in mutants with only one functional ASY3 allele, indicating that reducing ASY3 dosage increases crossover formation. Moreover, the class I crossovers on each bivalent in mutants with 1 functional ASY3 allele follow a random distribution, indicating compromised crossover interference. These results reveal the distinct dosage-dependent effects of ASY3 on crossover formation and provide insights into the role of the chromosome axis in patterning recombination.
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