ArticlePlant physiology2023
Tomato sucrose transporter SlSUT4 participates in flowering regulation by modulating gibberellin biosynthesis.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 54 citations in OpenAlex.
- Steady-stateFrontiers in plant science · 2026Article
- Genome-wide analysis and functional characterization of theFrontiers in plant science · 2026Article
- Genome-Wide Identification and Expression Analysis of theCurrent issues in molecular biology · 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
- Regulation of jasmonic acid signalling in tomato cold stress response: Insights into the MYB15-LOXD and MYB15-MYC2-LOXD regulatory modules.Plant biotechnology journal · 2025Article
- Metabolic engineering ofApplied and environmental microbiology · 2025Article
- How vacuolar sugar transporters evolve and control cellular sugar homeostasis, organ development and crop yield.Nature plants · 2025Review
- Integrated metabolome analysis and transcript profiles revealed a potential role of SWEETs in sugar accumulation during Carrot taproot development.BMC plant biology · 2025Article
- Molecular breeding of tomato: Advances and challenges.Journal of integrative plant biology · 2025Review
- Genetic engineering of RuBisCO by multiplex CRISPR editing small subunits in rice.Plant biotechnology journal · 2025Article
- Sugar transporters: mediators of carbon flow between plants and microbes.Frontiers in plant science · 2025Review
- Constitutive expression of full-length or partial ofFrontiers in plant science · 2025Article
- Tomato SlARF5 participate in the flower organ initiation process and control plant height.BMC plant biology · 2024Article
- Article
- Sugar import mediated by sugar transporters and cell wall invertases for seed development inHorticulture research · 2024Article
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- Genome-Wide Identification and Expression Analysis of the SUT Family from Three Species of Sapindaceae Revealed Their Role in the Accumulation of Sugars in Fruits.Plants (Basel, Switzerland) · 2023Article
- Molecular Mechanisms of Dual Potato Reproduction.Physiologia plantarumReview
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The functions of sucrose transporters (SUTs) differ among family members. The physiological function of SUT1 has been studied intensively, while that of SUT4 in various plant species including tomato (Solanum lycopersicum) is less well-understood. In this study, we characterized the function of tomato SlSUT4 in the regulation of flowering using a combination of molecular and physiological analyses. SlSUT4 displayed transport activity for sucrose when expressed in yeast (Saccharomyces cerevisiae), and it localized at both the plasma membrane and tonoplast. SlSUT4 interacted with SlSUT1, causing partial internalization of the latter, the main phloem loader of sucrose in tomato. Silencing of SlSUT4 promoted SlSUT1 localization to the plasma membrane, contributing to increased sucrose export and thus increased sucrose level in the shoot apex, which promoted flowering. Both silencing of SlSUT4 and spraying with sucrose suppressed gibberellin biosynthesis through repression of ent-kaurene oxidase and gibberellin 20-oxidase-1 (2 genes encoding key enzymes in gibberellin biosynthesis) expression by SlMYB76, which directly bound to their promoters. Silencing of SlMYB76 promoted gibberellin biosynthesis. Our results suggest that SlSUT4 is a functional SUT in tomato; downregulation of SlSUT4 expression enhances sucrose transport to the shoot apex, which promotes flowering by inhibiting gibberellin biosynthesis.
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