ArticlePlant molecular biology2014
OsJAR1 is required for JA-regulated floret opening and anther dehiscence in rice.
Article in Plant molecular biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.
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71 citing papers in PubMed, 129 citations in OpenAlex.
- Reproductive thermotolerance: from flower development to seed initiation.The New phytologist · 2026Review
- Insights into Candidate Pathways Associated with Multi-Pistil Formation in Chinese Chestnut (Biology · 2026Article
- Fine mapping and candidate gene analysis of tassel glume closure1 (tgc1) gene in maize (Zea mays L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- The Transcription Factor OsWRKY30 Regulates Rice Resistance to Southern Rice Black Streaked Dwarf Virus Disease.Rice (New York, N.Y.) · 2026Article
- Jasmonate regulates male sterility in cucumber.aBIOTECH · 2026Article
- Single-cell transcriptome sequencing (ScRNA-seq) uncovers the regulatory role of lodicule cells in rice floret opening (FO).Communications biology · 2026Article
- Mutation of BrDAD1 affects flower opening and anther dehiscence by regulating jasmonate-mediated BrMYB108-BrSWEET15 module.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Wheat TaSPL13-2B Improves Floret Fertility and Enhances Grain Number per Spikelet Through Jasmonic Acid Signalling Pathway.Plant biotechnology journal · 2026Article
- Brassinosteroid and jasmonic acid pathways mediate the effect of high temperature on the outcrossing rate of photo-thermo-sensitive genic male-sterile rice lines.BMC plant biology · 2026Article
- Temporal transcriptomics reveal crucial networks underlying jasmonate-mediated diurnal floret opening and closure in rice.Science China. Life sciences · 2025Article
- The C2H2 Zinc-Finger protein ELR1 negatively regulates cytokinin metabolism and signaling pathway in rice.Functional & integrative genomics · 2025Article
- Spatiotemporal localization of jasmonate in the regulation of fruit set in tomato.Journal of experimental botany · 2025Article
- Jasmonic Acid Oxidase (JAO): Balancing growth and defense in rice.Plant physiology · 2025Article
- Genetic and molecular mechanisms underlying the male sterility in rice.Journal of applied genetics · 2025Review
- Rice JASMONIC ACID OXIDASES control resting jasmonate metabolism to promote growth and repress basal immune responses.Plant physiology · 2025Article
- Circular cell clusters and calcium oxalate crystals: critical players in Solanaceae anther dehiscence.Planta · 2025Review
- Genome-wide identification of the Medicago sativa L. MYB family and its transcriptional dynamics during pollen development.BMC plant biology · 2025Article
- Global transcriptome dynamics of seagrass flowering and seed development process: insights from the iconic seagrassFrontiers in plant science · 2025Article
- Combined analysis of transcriptome and WGCNA reveals the mediating role of JA in the low male fertility of loquat H30-6.Frontiers in plant science · 2025Article
- Receptor-like Kinase GOM1 Regulates Glume-Opening in Rice.Plants (Basel, Switzerland) · 2024Article
11 more citing papers are in PubMed but not listed here.
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15 authors at 8 institutions in 4 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Jasmonates are important phytohormones regulating reproductive development. We used two recessive rice Tos17 alleles of OsJAR1, osjar1-2 and osjar1-3, to study the biological function of jasmonates in rice anthesis. The florets of both osjar1 alleles stayed open during anthesis because the lodicules, which control flower opening in rice, were not withering on time. Furthermore, dehiscence of the anthers filled with viable pollen, was impaired, resulting in lower fertility. In situ hybridization and promoter GUS transgenic analysis confirmed OsJAR1 expression in these floral tissues. Flower opening induced by exogenous applied methyl jasmonate was impaired in osjar1 plants and was restored in a complementation experiment with transgenics expressing a wild type copy of OsJAR1 controlled by a rice actin promoter. Biochemical analysis showed that OsJAR1 encoded an enzyme conjugating jasmonic acid (JA) to at least Ile, Leu, Met, Phe, Trp and Val and both osjar1 alleles had substantial reduction in content of JA-Ile, JA-Leu and JA-Val in florets. We conclude that OsJAR1 is a JA-amino acid synthetase that is required for optimal flower opening and closing and anther dehiscence in rice.
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