ArticlePlant physiology2022
A vacuolar hexose transport is required for xylem development in the inflorescence stem.
Article in Plant physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 32 citations in OpenAlex.
- The sugar transporter ZmSWEET11 participates in plant autophagy to respond to salt stress.GM crops & food · 2026Article
- Single-nucleus RNA sequencing reveals a spatiotemporal pattern of HScience China. Life sciences · 2026Article
- Molecular mechanisms and evolutionary adaptations of transporters for photosynthates and specialized metabolites in plants.Plant cell reports · 2026Review
- Trees use exogenous sugars for growth, but excess triggers negative feedback reducing photosynthetic carbon gain.Tree physiology · 2025Article
- How vacuolar sugar transporters evolve and control cellular sugar homeostasis, organ development and crop yield.Nature plants · 2025Review
- Cell Wall Invertase 4 Governs Sucrose-Hexose Homeostasis in the Apoplast to Regulate Wood Development in Poplar.Plants (Basel, Switzerland) · 2025Article
- Symplasmic phloem loading and subcellular transport in storage roots are key factors for carbon allocation in cassava.Plant physiology · 2024Article
- Lignin accumulation in cell wall plays a role in clubroot resistance.Frontiers in plant science · 2024Article
- Vacuolar Sugar Transporter TMT2 Plays Crucial Roles in Germination and Seedling Development in Arabidopsis.International journal of molecular sciences · 2023Article
- Combining single-cell RNA sequencing with spatial transcriptome analysis reveals dynamic molecular maps of cambium differentiation in the primary and secondary growth of trees.Plant communications · 2023Article
- Article
- Cellular export of sugars and amino acids: role in feeding other cells and organisms.Plant physiology · 2021Review
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Authors and funding
11 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In Angiosperms, the development of the vascular system is controlled by a complex network of transcription factors. However, how nutrient availability in the vascular cells affects their development remains to be addressed. At the cellular level, cytosolic sugar availability is regulated mainly by sugar exchanges at the tonoplast through active and/or facilitated transport. In Arabidopsis (Arabidopsis thaliana), among the genes encoding tonoplastic transporters, SUGAR WILL EVENTUALLY BE EXPORTED TRANSPORTER 16 (SWEET16) and SWEET17 expression has been previously detected in the vascular system. Here, using a reverse genetics approach, we propose that sugar exchanges at the tonoplast, regulated by SWEET16, are important for xylem cell division as revealed in particular by the decreased number of xylem cells in the swt16 mutant and the accumulation of SWEET16 at the procambium-xylem boundary. In addition, we demonstrate that transport of hexoses mediated by SWEET16 and/or SWEET17 is required to sustain the formation of the xylem secondary cell wall. This result is in line with a defect in the xylem cell wall composition as measured by Fourier-transformed infrared spectroscopy in the swt16swt17 double mutant and by upregulation of several genes involved in secondary cell wall synthesis. Our work therefore supports a model in which xylem development partially depends on the exchange of hexoses at the tonoplast of xylem-forming cells.
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