ArticleRice (New York, N.Y.)2020
RGG1, Involved in the Cytokinin Regulatory Pathway, Controls Grain Size in Rice.
Article in Rice (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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Who cites it
25 citing papers in PubMed, 49 citations in OpenAlex.
- Plant G proteins: Versatile signaling hubs for synergistic improvement of agronomic traits.Journal of integrative plant biology · 2026Review
- Multi-omics Analysis Reveals the Hormonal Basis of Differential Response to Nighttime Heat Temperature Between Superior and Inferior Rice Grains.Rice (New York, N.Y.) · 2026Article
- The effect of alternate wetting and drying (AWD) on spikelet fertility, grain traits and the biosynthesis of 2-acetyl-1-pyrroline (2-AP) in rice grown under high temperature.BMC plant biology · 2025Article
- Rice grain size: current regulatory mechanisms and future perspectives.Journal of plant research · 2025Review
- Regulation of Rice Grain Quality by Exogenous Kinetin During Grain-Filling Period.Plants (Basel, Switzerland) · 2025Article
- Gγ-protein GS3 Function in Tight Genetic Relation with OsmiR396/GS2 to Regulate Grain Size in Rice.Rice (New York, N.Y.) · 2024Article
- Molecular mechanisms controlling grain size and weight and their biotechnological breeding applications in maize and other cereal crops.Journal of advanced research · 2024Review
- RNA-Seq Reveals That Multiple Pathways Are Involved in Tuber Expansion in Tiger Nuts (International journal of molecular sciences · 2024Article
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- RGA1 regulates grain size, rice quality and seed germination in the small and round grain mutant srg5.BMC plant biology · 2024Article
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- GR5 acts in the G protein pathway to regulate grain size in rice.Plant communications · 2024Article
- MADS1-regulated lemma and awn development benefits barley yield.Nature communications · 2024Article
- Biggest of tinies: natural variation in seed size and mineral distribution in the ancient crop tef [Frontiers in plant science · 2024Article
- Genetic Basis of Grain Size and Weight in Rice, Wheat, and Barley.International journal of molecular sciences · 2023Review
- Natural allelic variation in GRAIN SIZE AND WEIGHT 3 of wild rice regulates the grain size and weight.Plant physiology · 2023Article
- A transcriptional Regulator Gar Regulates the Growth and Virulence of Xanthomonas oryzae pv. oryzae.Current microbiology · 2023Article
- Ectopic Expression of a Maize GeneInternational journal of molecular sciences · 2023Article
- Fine mapping ofMolecular breeding : new strategies in plant improvement · 2022Article
- Article
Corrections and comments
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Authors and funding
13 authors at 2 institutions in 1 country.
Funding
Abstract
Heterotrimeric GTP binding proteins (G proteins) and cytokinin play important roles in regulating plant growth and development. However, little is known about the mechanism by which they coordinate the regulation of grain size in rice. We functionally characterized one gene, RGG1, encoding a type-A Gγ subunit. Strong GUS staining was detected in young panicles and spikelets, suggesting a role for this gene in modulating panicle-related trait development. Overexpression of RGG1 in Nipponbare (NIP) and Wuyunjing 30 (WYJ30) significantly decreased plant height, panicle length and grain length by regulating cell division. However, rgg1 mutants generated by the CRISPR/Cas9 system exhibited no obvious phenotypic differences, which may be due to the extremely low expression level of this gene in vivo. The transcriptomes of young panicles of NIP, the NIP-rgg1-2 mutant and the NIP-OE2 overexpression line were sequenced, and the results showed that many differentially expressed genes (DEGs) were associated with the cytokinin biosynthetic pathway. We confirmed this result by measuring the endogenous cytokinin levels and found that cytokinin content was lower in the overexpression lines. Additionally, increased expression of RGG1 decreased sensitivity to low concentrations of 6-benzylaminopurine (6-BA). Our results reveal a novel G protein-cytokinin module controlling grain size in rice and will be beneficial for understanding the mechanisms by which G proteins regulate grain size and plant development.
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