ArticleJournal of experimental botany2024
OsRH52A, a DEAD-box protein, regulates functional megaspore specification and is required for embryo sac development in rice.
Article in Journal of experimental botany, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 4 citations in OpenAlex.
- The OsGSK1-OsBZR3-OsJAZ4 module integrates nitrate signaling with brassinosteroid and jasmonic acid crosstalk to drive cell wall remodeling for salt recovery in rice.Plant communications · 2026Article
- Fine mapping of the dominant female sterility gene and novel model of hybrid seed production in cabbage (Brassica oleracea L. var. capitata).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 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
- Unlocking fertility in the female gametophyte: a DEAD-box RNA helicase is essential for embryo sac development and seed setting.Journal of experimental botany · 2024Article
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
Abstract
The development of the embryo sac is an important factor that affects seed setting in rice. Numerous genes associated with embryo sac (ES) development have been identified in plants; however, the function of the DEAD-box RNA helicase family genes is poorly known in rice. Here, we characterized a rice DEAD-box protein, RH52A, which is localized in the nucleus and cytoplasm and highly expressed in the floral organs. The knockout mutant rh52a displayed partial ES sterility, including degeneration of the ES (21%) and the presence of a double-female-gametophyte (DFG) structure (11.8%). The DFG developed from two functional megaspores near the chalazal end in one ovule, and 3.4% of DFGs were able to fertilize via the sac near the micropylar pole in rh52a. RH52A was found to interact with MFS1 and ZIP4, both of which play a role in homologous recombination in rice meiosis. RNA-sequencing identified 234 down-regulated differentially expressed genes associated with reproductive development, including two, MSP1 and HSA1b, required for female germline cell specification. Taken together, our study demonstrates that RH52A is essential for the development of the rice embryo sac and provides cytological details regarding the formation of DFGs.
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