ArticlePlant physiology2011
Impaired function of the tonoplast-localized sucrose transporter in rice, OsSUT2, limits the transport of vacuolar reserve sucrose and affects plant growth.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.
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100 citing papers in PubMed, 218 citations in OpenAlex.
- Genomic Insights into the Genetic Diversity, Selection Signals, and Agronomic Traits of Rice (Plants (Basel, Switzerland) · 2026Article
- BnaA07.SUC2 regulated by BnaA05.MYC2 in jasmonate pathway promotes oilseed rape susceptibility to Plasmodiophora brassicae.PLoS pathogens · 2026Article
- Identification and Functional Characterization of Anthocyanidin 3-O-Glucosyltransferases OsA3GT1 and OsA3GT2 in Black Rice.Rice (New York, N.Y.) · 2026Article
- OsSTK-Mediated Sakuranetin Biosynthesis and Carbon Flux Orchestrate Growth and Defence in Rice.Plant biotechnology journal · 2026Article
- Towards a Holistic View of the Orchestration Between Sugar Transporters in Cereal Crops.Plants (Basel, Switzerland) · 2026Article
- Genome-wide analysis of the sugarcane SUT gene family reveals ShSUT4 as a key regulator of abiotic stress responses.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Mutation of OsKIF14.3, a Kinesin-14 Subfamily Protein, Altered Starch Metabolism and Caused Yellowish Leaf in Rice.International journal of molecular sciences · 2025Article
- Tonoplast sucrose transporter SUT4-dependent sugar partitioning modulates phenological transitions and reproductive success in poplar.The Plant journal : for cell and molecular biology · 2025Article
- Spatiotemporal Transcriptome Profiling Reveals Nutrient Transport Dynamics in Rice Nodes and Roots During Reproductive Development.International journal of molecular sciences · 2025Article
- Article
- Grain under pressure: Harnessing biochemical pathways to beat drought and heat in wheat.The Plant journal : for cell and molecular biology · 2025Review
- How vacuolar sugar transporters evolve and control cellular sugar homeostasis, organ development and crop yield.Nature plants · 2025Review
- Haplotype-resolved genome assembly and genome-wide association study identifies the candidate gene closely related to sugar content and tuber yield inHorticulture research · 2025Article
- Carbohydrate flow during grain filling: Phytohormonal regulation and genetic control in rice (Oryza sativa).Journal of integrative plant biology · 2025Review
- Gene Pyramiding Strategies for Sink Size and Source Capacity for High-Yield Japonica Rice Breeding.Rice (New York, N.Y.) · 2025Review
- Sugar transporters: mediators of carbon flow between plants and microbes.Frontiers in plant science · 2025Review
- Sucrose induces flowering by degradation of the floral repressor Ghd7 via K48-linked polyubiquitination in rice.Journal of integrative plant biology · 2024Article
- Cytochemical localization and synthesis mechanism of the glucomannan in pseudobulbs ofHorticulture research · 2024Article
- Current perspectives on the regulatory mechanisms of sucrose accumulation in sugarcane.Heliyon · 2024Review
- Plasma membrane-localized hexose transporter OsSWEET1b, affects sugar metabolism and leaf senescence.Plant cell reports · 2024Article
40 more citing papers are in PubMed but not listed here.
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Authors and funding
15 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Physiological functions of sucrose (Suc) transporters (SUTs) localized to the tonoplast in higher plants are poorly understood. We here report the isolation and characterization of a mutation in the rice (Oryza sativa) OsSUT2 gene. Expression of OsSUT2-green fluorescent protein in rice revealed that OsSUT2 localizes to the tonoplast. Analysis of the OsSUT2 promoter::β-glucuronidase transgenic rice indicated that this gene is highly expressed in leaf mesophyll cells, emerging lateral roots, pedicels of fertilized spikelets, and cross cell layers of seed coats. Results of Suc transport assays in yeast were consistent with a H(+)-Suc symport mechanism, suggesting that OsSUT2 functions in Suc uptake from the vacuole. The ossut2 mutant exhibited a growth retardation phenotype with a significant reduction in tiller number, plant height, 1,000-grain weight, and root dry weight compared with the controls, the wild type, and complemented transgenic lines. Analysis of primary carbon metabolites revealed that ossut2 accumulated more Suc, glucose, and fructose in the leaves than the controls. Further sugar export analysis of detached leaves indicated that ossut2 had a significantly decreased sugar export ability compared with the controls. These results suggest that OsSUT2 is involved in Suc transport across the tonoplast from the vacuole lumen to the cytosol in rice, playing an essential role in sugar export from the source leaves to sink organs.
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