ArticleJournal of experimental botany2009
Sucrose transporter1 functions in phloem loading in maize leaves.
Article in Journal of experimental botany, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers.
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116 citing papers in PubMed, 286 citations in OpenAlex.
- The loss of COP1 delays senescence and inhibits root growth through modulation of sucrose allocation and availability.Plant physiology · 2026Article
- SnRK2.6 phosphorylates sucrose transporter ZmSUT1 to enhance yield by modulating leaf senescence in maize.Science advances · 2026Article
- Molecular mechanisms and evolutionary adaptations of transporters for photosynthates and specialized metabolites in plants.Plant cell reports · 2026Review
- The sucrose-trehalose 6-phosphate nexus is conserved in flowering plants with different phloem loading and carbon storage strategies.Journal of experimental botany · 2026Article
- Towards a Holistic View of the Orchestration Between Sugar Transporters in Cereal Crops.Plants (Basel, Switzerland) · 2026Article
- Article
- Assembly of Arundinella anomala genome to facilitate single-cell resolved functional and developmental characterization of CNature plants · 2026Article
- Plant SUT Sucrose Transporters: Structure, Evolution and Biological Functions.Current protein & peptide science · 2026Review
- Engineering vascular potassium transport increases yield and drought resilience of cassava.Nature plants · 2025Article
- Transcriptomic insights into gibberellin-3-mediated regulation of bud dormancy and metabolic transition in pitaya (Hylocereus polyrhizus).Plant cell reports · 2025Article
- Systems analysis of long-term heat stress responses in the C4 grass Setaria viridis.The Plant cell · 2025Article
- Overexpression of plasma membrane SUT1 in poplar alters lateral sucrose partitioning in stem and promotes leaf necrosis.Plant direct · 2025Article
- The transcription factors ERF105 and NAC72 regulate expression of a sugar transporter gene and hexose accumulation in grape.The Plant cell · 2024Article
- Article
- The role of sugar transporters in the battle for carbon between plants and pathogens.Plant biotechnology journal · 2024Review
- Sugar transporters PpSWEET9a and PpSWEET14 synergistically mediate peach sucrose allocation from source leaves to fruit.Communications biology · 2024Article
- From acidity to sweetness: a comprehensive review of carbon accumulation in grape berries.Molecular horticulture · 2024Review
- Widely-targeted metabolomics and transcriptomics identify metabolites associated with flowering regulation of Choy Sum.Scientific reports · 2024Article
- Current perspectives on the regulatory mechanisms of sucrose accumulation in sugarcane.Heliyon · 2024Review
- Genome-wide analysis of sugar transporter gene family inFrontiers in plant science · 2024Article
56 more citing papers are in PubMed but not listed here.
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In most plants, sucrose is exported from source leaves to carbon-importing sink tissues to sustain their growth and metabolism. Apoplastic phloem-loading species require sucrose transporters (SUTs) to transport sucrose into the phloem. In many dicot plants, genetic and biochemical evidence has established that SUT1-type proteins function in phloem loading. However, the role of SUT1 in phloem loading in monocot plants is not clear since the rice (Oryza sativa) and sugarcane (Saccharum hybrid) SUT1 orthologues do not appear to function in phloem loading of sucrose. A SUT1 gene was previously cloned from maize (Zea mays) and shown to have expression and biochemical activity consistent with a hypothesized role in phloem loading. To determine the biological function of SUT1 in maize, a sut1 mutant was isolated and characterized. sut1 mutant plants hyperaccumulate carbohydrates in mature leaves and display leaf chlorosis with premature senescence. In addition, sut1 mutants have greatly reduced stature, altered biomass partitioning, delayed flowering, and stunted tassel development. Cold-girdling wild-type leaves to block phloem transport phenocopied the sut1 mutants, supporting a role for maize SUT1 in sucrose export. Furthermore, application of (14)C-sucrose to abraded sut1 mutant and wild-type leaves showed that sucrose export was greatly diminished in sut1 mutants compared with wild type. Collectively, these data demonstrate that SUT1 is crucial for efficient phloem loading of sucrose in maize leaves.
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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.