ArticlePlant physiology2021
Replication protein A large subunit (RPA1a) limits chiasma formation during rice meiosis.
Article in Plant physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 16 citations in OpenAlex.
- Genome-wide identification and characterization of the RPA gene family in maize.BMC plant biology · 2026Article
- RECQ4 restricts non-interfering crossover formation to fine-tune meiotic recombination rates in rice.Plant biotechnology journal · 2025Article
- Identification of a Novel Rice Chromosomal Translocation Line that Could Cause the Heterozygote Semi-Sterility and be Overcome by Genomic Duplication.Rice (New York, N.Y.) · 2025Article
- MORE FLORET1 Interacts with C-type Replication Protein A Complex and Regulates Male Meiosis in Rice.Rice (New York, N.Y.) · 2025Article
- Article
- RETINOBLASTOMA RELATED 1 switches mitosis to meiosis in rice.Plant communications · 2024Article
- HEI10 is subject to phase separation and mediates RPA1a degradation during meiotic interference-sensitive crossover formation.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- FANCM promotes class I interfering crossovers and suppresses class II non-interfering crossovers in wheat meiosis.Nature communications · 2022Article
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Authors and funding
11 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Replication protein A (RPA), a single-stranded DNA-binding protein, plays essential role in homologous recombination. However, because deletion of RPA causes embryonic lethality in mammals, the exact function of RPA in meiosis remains unclear. In this study, we generated an rpa1a mutant using CRISPR/Cas9 technology and explored its function in rice (Oryza sativa) meiosis. In rpa1a, 12 bivalents were formed at metaphase I, just like in wild-type, but chromosome fragmentations were consistently observed at anaphase I. Fluorescence in situ hybridization assays indicated that these fragmentations were due to the failure of the recombination intermediates to resolve. Importantly, the mutant had a highly elevated chiasma number, and loss of RPA1a could completely restore the 12 bivalent formations in the zmm (for ZIP1-4, MSH4/5, and MER3) mutant background. Protein-protein interaction assays showed that RPA1a formed a complex with the methyl methansulfonate and UV sensitive 81 (and the Fanconi anemia complementation group M-Bloom syndrome protein homologs (RECQ4A)-Topoisomerase3α-RecQ-mediated genome instability 1 complex to regulate chiasma formation and processing of the recombination intermediates. Thus, our data establish a pivotal role for RPA1a in promoting the accurate resolution of recombination intermediates and in limiting redundant chiasma formation during rice meiosis.
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