ArticlePlant biotechnology journal2022
OsCOMT, encoding a caffeic acid O-methyltransferase in melatonin biosynthesis, increases rice grain yield through dual regulation of leaf senescence and vascular development.
Article in Plant biotechnology journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 78 citations in OpenAlex.
- The TaCOMT1A-Synthesised Sakuranetin Is a Novel Biostimulant Enhancing Drought Tolerance and Yield in Wheat.Plant biotechnology journal · 2026Article
- Time-Course Transcriptome, Metabolome, and Weighted Gene Co-Expression Network Analysis Reveal the Roles of thePlants (Basel, Switzerland) · 2025Article
- Melatonin in crop plants: from biosynthesis through pleiotropic effects to enhanced stress resilience.Journal of applied genetics · 2025Review
- Integrative multi-transcriptomic analysis uncovers core genes and potential defense mechanisms in rice-Magnoporthe oryzae interaction.Plant cell reports · 2025Article
- Melatonin suppresses ethylene biosynthesis by inhibiting transcription factor MdREM10 during apple fruit ripening.Horticulture research · 2025Article
- Genome-wide association study identifies QTL and candidate genes for grain size and weight in a Triticum turgidum collection.The plant genome · 2025Article
- Comparative Efficacy of Melatonin and Brassinolide in Mitigating the Adverse Effects of Cadmium onInternational journal of molecular sciences · 2025Article
- Exogenous Melatonin Boosts Heat Tolerance inPlants (Basel, Switzerland) · 2024Article
- A Novel Single Base Mutation inInternational journal of molecular sciences · 2024Article
- Synergistic effects of melatonin and 24-epibrassinolide on chickpea water deficit tolerance.BMC plant biology · 2024Article
- Spatiotemporal transcriptomic atlas of rhizome formation in Oryza longistaminata.Plant biotechnology journal · 2024Article
- Foliar application of melatonin improve the number of secondary branches and secondary branch grains quality of rice.PloS one · 2024Article
- Gibberellin signaling regulates lignin biosynthesis to modulate rice seed shattering.The Plant cell · 2023Article
- Genetic Basis of Grain Size and Weight in Rice, Wheat, and Barley.International journal of molecular sciences · 2023Review
- Impact of Exogenous Melatonin Application on Photosynthetic Machinery under Abiotic Stress Conditions.Plants (Basel, Switzerland) · 2023Review
- Optimizing Grain Yield and Radiation Use Efficiency through Synergistic Applications of Nitrogen and Potassium Fertilizers in Super Hybrid Rice.Plants (Basel, Switzerland) · 2023Article
- Characterization of novel loci controlling seed oil content in Brassica napus by marker metabolite-based multi-omics analysis.Genome biology · 2023Article
- Global Phosphoproteomic Analysis Reveals the Defense and Response Mechanisms of Japonica Rice under Low Nitrogen Stress.International journal of molecular sciences · 2023Article
- Human Naa50 Shows SerotoninAntioxidants (Basel, Switzerland) · 2023Article
- Multi-model genome-wide association studies of leaf anatomical traits and vein architecture in rice.Frontiers in plant science · 2023Article
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Authors and funding
16 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Melatonin, a natural phytohormone in plants, plays multiple critical roles in plant growth and stress responses. Although melatonin biosynthesis-related genes have been suggested to possess diverse biological functions, their roles and functional mechanisms in regulating rice grain yield remain largely unexplored. Here, we uncovered the roles of a caffeic acid O-methyltransferase (OsCOMT) gene in mediating rice grain yield through dual regulation of leaf senescence and vascular development. In vitro and in vivo evidence revealed that OsCOMT is involved in melatonin biosynthesis. Transgenic assays suggested that OsCOMT significantly delays leaf senescence at the grain filling stage by inhibiting degradation of chlorophyll and chloroplast, which, in turn, improves photosynthesis efficiency. In addition, the number and size of vascular bundles in the culms and leaves were significantly increased in the OsCOMT-overexpressing plants, while decreased in the knockout plants, suggesting that OsCOMT plays a positive role in vascular development of rice. Further evidence indicated that OsCOMT-mediated vascular development might owe to the crosstalk between melatonin and cytokinin. More importantly, we found that OsCOMT is a positive regulator of grain yield, and overexpression of OsCOMT increase grain yield per plant even in a high-yield variety background, suggesting that OsCOMT can be used as an important target for enhancing rice yield. Our findings shed novel insights into melatonin-mediated leaf senescence and vascular development and provide a possible strategy for genetic improvement of rice grain yield.
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