ArticlePloS one2012
The tonoplast-localized sucrose transporter in Populus (PtaSUT4) regulates whole-plant water relations, responses to water stress, and photosynthesis.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 96 citations in OpenAlex.
- Vein-Specific Overexpression of Galactinol Synthase Gene Improves Salinity Tolerance in Poplar.Plant, cell & environment · 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
- Plant SUT Sucrose Transporters: Structure, Evolution and Biological Functions.Current protein & peptide science · 2026Review
- Tonoplast sucrose transporter SUT4-dependent sugar partitioning modulates phenological transitions and reproductive success in poplar.The Plant journal : for cell and molecular biology · 2025Article
- Overexpression of plasma membrane SUT1 in poplar alters lateral sucrose partitioning in stem and promotes leaf necrosis.Plant direct · 2025Article
- Multiplex Editing of theThe CRISPR journal · 2023Article
- Effects of β-caryophyllene and oxygen availability on cholesterol and fatty acids in breast cancer cells.PloS one · 2023Article
- Tonoplast Sucrose Trafficking Modulates Starch Utilization and Water Deficit Behavior in Poplar Leaves.Plant & cell physiology · 2022Article
- Priming Seeds with Indole and (Z)-3-Hexenyl Acetate Enhances Resistance Against Herbivores and Stimulates Growth.Journal of chemical ecology · 2022Article
- Genome-wide analysis and characterization ofFrontiers in plant science · 2022Article
- Coordination Between Phloem Loading and Structure Maintains Carbon Transport Under Drought.Frontiers in plant science · 2022Article
- Differential regulation of drought stress by biological membrane transporters and channels.Plant cell reports · 2021Review
- Plant SWEETs: from sugar transport to plant-pathogen interaction and more unexpected physiological roles.Plant physiology · 2021Review
- Phylogenetic relationships of sucrose transporters (SUTs) in plants and genome-wide characterization ofPeerJ · 2021Article
- Defoliation-induced compensatory transpiration is compromised inPlant direct · 2020Article
- A novel sucrose transporter gene IbSUT4 involves in plant growth and response to abiotic stress through the ABF-dependent ABA signaling pathway in Sweetpotato.BMC plant biology · 2020Article
- Subcellular Targeting of Plant Sucrose Transporters Is Affected by Their Oligomeric State.Plants (Basel, Switzerland) · 2020Article
- Characterization of a vacuolar sucrose transporter, HbSUT5, from Hevea brasiliensis: involvement in latex production through regulation of intracellular sucrose transport in the bark and laticifers.BMC plant biology · 2019Article
- The Tolerance of Salinity in Rice Requires the Presence of a Functional Copy of FLN2.Biomolecules · 2019Article
- Shared expression of crassulacean acid metabolism (CAM) genes pre-dates the origin of CAM in the genus Yucca.Journal of experimental botany · 2019Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Populus sucrose (Suc) transporter 4 (PtaSUT4), like its orthologs in other plant taxa, is tonoplast localized and thought to mediate Suc export from the vacuole into the cytosol. In source leaves of Populus, SUT4 is the predominantly expressed gene family member, with transcript levels several times higher than those of plasma membrane SUTs. A hypothesis is advanced that SUT4-mediated tonoplast sucrose fluxes contribute to the regulation of osmotic gradients between cellular compartments, with the potential to mediate both sink provisioning and drought tolerance in Populus. Here, we describe the effects of PtaSUT4-RNA interference (RNAi) on sucrose levels and raffinose family oligosaccharides (RFO) induction, photosynthesis, and water uptake, retention and loss during acute and chronic drought stresses. Under normal water-replete growing conditions, SUT4-RNAi plants had generally higher shoot water contents than wild-type plants. In response to soil drying during a short-term, acute drought, RNAi plants exhibited reduced rates of water uptake and delayed wilting relative to wild-type plants. SUT4-RNAi plants had larger leaf areas and lower photosynthesis rates than wild-type plants under well-watered, but not under chronic water-limiting conditions. Moreover, the magnitude of shoot water content, height growth, and photosynthesis responses to contrasting soil moisture regimes was greater in RNAi than wild-type plants. The concentrations of stress-responsive RFOs increased in wild-type plants but were unaffected in SUT4-RNAi plants under chronically dry conditions. We discuss a model in which the subcellular compartmentalization of sucrose mediated by PtaSUT4 is regulated in response to both sink demand and plant water status in Populus.
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