ArticlePlant physiology1998
The H+-sucrose cotransporter NtSUT1 is essential for sugar export from tobacco leaves
Article in Plant physiology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers.
What it found
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Who cites it
92 citing papers in PubMed, 243 citations in OpenAlex.
- Plant SUT Sucrose Transporters: Structure, Evolution and Biological Functions.Current protein & peptide science · 2026Review
- Immunohistochemical Localization of Proteins in the Phloem: Problems and Solutions.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Genome-wide identification and evolutionary analysis of SUT genes reveals key regulators of drought stress response in finger millet (Eleusine coracana).Journal, genetic engineering & biotechnology · 2025Article
- Improving crop yield potential: Underlying biological processes and future prospects.Food and energy security · 2023Review
- Mobile forms of carbon in trees: metabolism and transport.Tree physiology · 2022Review
- Sugar loading is not required for phloem sap flow in maize plants.Nature plants · 2022Article
- Cellular export of sugars and amino acids: role in feeding other cells and organisms.Plant physiology · 2021Review
- Evidence for phloem loading via the abaxial bundle sheath cells in maize leaves.The Plant cell · 2021Article
- Ectopic Expression ofFrontiers in plant science · 2021Article
- Far-red radiation stimulates dry mass partitioning to fruits by increasing fruit sink strength in tomato.The New phytologist · 2020Article
- Plant glucose transporter structure and function.Pflugers Archiv : European journal of physiology · 2020Review
- Exaptive Evolution of Target of Rapamycin Signaling in Multicellular Eukaryotes.Developmental cell · 2020Review
- The sucrose transporter MdSUT4.1 participates in the regulation of fruit sugar accumulation in apple.BMC plant biology · 2020Article
- TOR dynamically regulates plant cell-cell transport.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Improved Yield and Photosynthate Partitioning in AVP1 Expressing Wheat (Frontiers in plant science · 2020Article
- Symplasmic phloem unloading and radial post-phloem transport via vascular rays in tuberous roots of Manihot esculenta.Journal of experimental botany · 2019Article
- Overexpression of PsnSuSy1, 2 genes enhances secondary cell wall thickening, vegetative growth, and mechanical strength in transgenic tobacco.Plant molecular biology · 2019Review
- Genome-wide identification of MST, SUT and SWEET family sugar transporters in root parasitic angiosperms and analysis of their expression during host parasitism.BMC plant biology · 2019Article
- Influence of starch deficiency on photosynthetic and post-photosynthetic carbon isotope fractionations.Journal of experimental botany · 2019Article
- Genome-Wide Association Study Reveals Candidate Genes for Flowering Time Variation in Common Bean (Frontiers in plant science · 2019Article
32 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In many species translocation of sucrose from the mesophyll to the phloem is carrier mediated. A sucrose/H+-symporter cDNA, NtSUT1, was isolated from tobacco (Nicotiana tabacum) and shown to be highly expressed in mature leaves and at low levels in other tissues, including floral organs. To study the in vivo function of NtSUT1, tobacco plants were transformed with a SUT1 antisense construct under control of the cauliflower mosaic virus 35S promoter. Upon maturation, leaves of transformants expressing reduced amounts of SUT1 mRNA curled downward, and strongly affected plants developed chloroses and necroses that led to death. The leaves exhibited impaired ability to export recently fixed 14CO2 and were unable to export transient starch during extended periods of darkness. As a consequence, soluble carbohydrates accumulated and photosynthesis was reduced. Autoradiographs of leaves show a heterogenous pattern of CO2 fixation even after a 24-h chase. The 14C pattern does not change with time, suggesting that movement of photosynthate between mesophyll cells may also be impaired. The affected lines show a reduction in the development of the root system and delayed or impaired flowering. Taken together, the effects observed in a seed plant (tobacco) demonstrate the importance of SUT1 for sucrose loading into the phloem via an apoplastic route and possibly for intermesophyll transport as well.
Identifiers
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.