ArticlePlant physiology2014
Expression of Sucrose Transporter cDNAs Specifically in Companion Cells Enhances Phloem Loading and Long-Distance Transport of Sucrose but Leads to an Inhibition of Growth and the Perception of a Phosphate Limitation.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed, 84 citations in OpenAlex.
- Protocol for cell-specific ratiometric quantification of apoplastic pH in Arabidopsis seedlings.STAR protocols · 2026Article
- Regulatory DNA Sequences Controlling Gene Expression in Leaf Phloem Cells.Methods in molecular biology (Clifton, N.J.) · 2026Review
- Limited phosphate resources are efficiently allocated to each organ by the PHR1-EIN3/EIL1 module to coordinate their establishment.Science advances · 2025Article
- Decoding Long-Distance Communication Under Mineral Stress: Advances in Vascular Signalling and Molecular Tools for Plant Resilience.Plant, cell & environment · 2025Review
- Regulated to respond: dual localization and dynamic control of AVP1 in plant carbon partitioning.Frontiers in plant science · 2025Review
- Fast and simple fluorometric measurement of phloem loading exposes auxin-dependent regulation of Arabidopsis sucrose transporter AtSUC2.The Plant journal : for cell and molecular biology · 2024Article
- Metabolism ofPlants (Basel, Switzerland) · 2024Article
- Milestones in understanding transport, sensing, and signaling of the plant nutrient phosphorus.The Plant cell · 2024Review
- Integrated Analysis of Metabolome and Transcriptome Reveals Insights for Low Phosphorus Tolerance in Wheat Seedling.International journal of molecular sciences · 2023Article
- OverexpressingPhysiology and molecular biology of plants : an international journal of functional plant biology · 2023Article
- Role of miRNAs in sucrose stress response, reactive oxygen species, and anthocyanin biosynthesis inFrontiers in plant science · 2023Article
- Improving crop yield potential: Underlying biological processes and future prospects.Food and energy security · 2023Review
- JULGI-mediated increment in phloem transport capacity relates to fruit yield in tomato.Plant biotechnology journal · 2022Article
- Transcriptome Analysis Reveals Roles of Sucrose in Anthocyanin Accumulation in 'Kuerle Xiangli' (Genes · 2022Article
- An overview of sucrose transporter (SUT) genes family in rice.Molecular biology reports · 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
- Diurnal Changes in Water Soluble Carbohydrate Components in Leaves and Sucrose AssociatedInternational journal of molecular sciences · 2020Article
- Multi-gene metabolic engineering of tomato plants results in increased fruit yield up to 23%.Scientific reports · 2020Article
- Carbon export from leaves is controlled via ubiquitination and phosphorylation of sucrose transporter SUC2.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
Corrections and comments
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Authors and funding
8 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sucrose (Suc) is the predominant form of carbon transported through the phloem from source to sink organs and is also a prominent sugar for short-distance transport. In all streptophytes analyzed, Suc transporter genes (SUTs or SUCs) form small families, with different subgroups evolving distinct functions. To gain insight into their capacity for moving Suc in planta, representative members of each clade were first expressed specifically in companion cells of Arabidopsis (Arabidopsis thaliana) and tested for their ability to rescue the phloem-loading defect caused by the Suc transporter mutation, Atsuc2-4. Sequence similarity was a poor indicator of ability: Several genes with high homology to AtSUC2, some of which have phloem-loading functions in other eudicot species, did not rescue the Atsuc2-4 mutation, whereas a more distantly related gene, ZmSUT1 from the monocot Zea mays, did restore phloem loading. Transporter complementary DNAs were also expressed in the companion cells of wild-type Arabidopsis, with the aim of increasing productivity by enhancing Suc transport to growing sink organs and reducing Suc-mediated feedback inhibition on photosynthesis. Although enhanced Suc loading and long-distance transport was achieved, growth was diminished. This growth inhibition was accompanied by increased expression of phosphate (P) starvation-induced genes and was reversed by providing a higher supply of external P. These experiments suggest that efforts to increase productivity by enhancing sugar transport may disrupt the carbon-to-P homeostasis. A model for how the plant perceives and responds to changes in the carbon-to-P balance is presented.
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Registered trials
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