ArticlePlant cell reports2019
OsVIN2 encodes a vacuolar acid invertase that affects grain size by altering sugar metabolism in rice.
Article in Plant cell reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed, 36 citations in OpenAlex.
- Effects of Haplotypes of the Rice Sucrose Transporter GenesInternational journal of molecular sciences · 2026Article
- Involvement of NtInvVR1 in the increase of reducing sugars during the curing of virginia tobacco.Scientific reports · 2026Article
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- Integrated Transcriptomic, Proteomic, and Metabolomic Analyses Reveal Mechanisms Underlying Day-Night Differences in Carbohydrate Metabolism between Diploid and Tetraploid Rice.Rice (New York, N.Y.) · 2025Article
- Rice grain size: current regulatory mechanisms and future perspectives.Journal of plant research · 2025Review
- Roles and Regulations of Acid Invertases in Plants: Current Knowledge and Future Perspectives.Plants (Basel, Switzerland) · 2025Review
- Wheat endosperm-specific transcription factor TaDOF6 enhances grain development by regulatingFrontiers in plant science · 2025Article
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- RAL6 encodes a seed allergenic protein that positively regulates grain weight and seed germination.Journal of plant research · 2024Article
- Genome-wide analysis of the passion fruit invertase gene family reveals involvement of PeCWINV5 in hexose accumulation.BMC plant biology · 2024Article
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- Functional Genome Analyses Reveal the Molecular Basis of Oil Accumulation in Developing Seeds of Castor Beans.International journal of molecular sciences · 2023Article
- Regulatory and functional divergence among members ofFrontiers in plant science · 2023Article
- Meta-QTL and haplo-pheno analysis reveal superior haplotype combinations associated with low grain chalkiness under high temperature in rice.Frontiers in plant science · 2023Article
- Integrative analysis of grapevine (Frontiers in nutrition · 2023Article
- Selection and Validation of 48 KASP Markers for Variety Identification and Breeding Guidance in Conventional and Hybrid Rice (Oryza sativa L.).Rice (New York, N.Y.) · 2022Article
- Review
- Fruit shape lociFrontiers in plant science · 2022Article
- Article
- Functional Characterization of a Cucumber (International journal of molecular sciences · 2021Article
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Authors and funding
18 authors at 3 institutions in 1 country.
Funding
Abstract
key messageOsVIN2, a vacuolar invertase, affects grain size and yield by altering sugar composition, transport, and starch accumulation in rice. Grain size, a major determinant of rice yield, is influenced by many developmental and environmental factors. Sugar metabolism plays vital roles in plant development. However, the way in which sugar metabolism affects rice grain size remains largely elusive. In this study, we characterized the small grain-size rice mutant sgs1. Histological analyses showed that reduced spikelet hull and endosperm size results from decreased cell size rather than cell number. Map-based cloning and complementation tests revealed that a DaiZ7 transposon insertion in a vacuolar invertase gene OsVIN2 is responsible for the mutant phenotype. Subcellular distribution and biochemical analysis indicated that OsVIN2 is located in the vacuolar lumen, and that its sucrose hydrolysis activity is maintained under acidic conditions. Furthermore, an altered sugar content with increased sucrose and decreased hexose levels, as well as changes in invertase and sucrose synthase activities, sugar transport gene expression, and starch constitution in sgs1 implies that OsVIN2 affects sucrose metabolism, including sugar composition, transport, and conversion from the source to the sink organs. Collectively, OsVIN2 is involved in sugar metabolism, and thus regulates grain size; our findings provide insights into grain development and also suggest a potential strategy to improve grain quality and yield in rice.
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