Journal
PHYSIOLOGIA PLANTARUM
Volume 165, Issue 1, Pages 44-57Publisher
WILEY
DOI: 10.1111/ppl.12751
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Funding
- University of Poitiers
- Centre National de la Recherche Scientifique (CNRS)
- French Ministry for Research and Higher Education
- 2015-2020 State-Region Planning Contracts (CPER), European Regional Development Fund (FEDER)
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In plants, the root is a typical sink organ that relies exclusively on the import of sugar from the aerial parts. Sucrose is delivered by the phloem to the most distant root tips and, en route to the tip, is used by the different root tissues for metabolism and storage. Besides, a certain portion of this carbon is exuded in the rhizosphere, supplied to beneficial microorganisms and diverted by parasitic microbes. The transport of sugars toward these numerous sinks either occurs symplastically through cell connections (plasmodesmata) or is apoplastically mediated through membrane transporters (MST, mononsaccharide tranporters, SUT/SUC, H+/sucrose transporters and SWEET, Sugar will eventually be exported transporters) that control monosaccharide and sucrose fluxes. Here, we review recent progresses on carbon partitioning within and outside roots, discussing membrane transporters involved in plant responses to biotic and abiotic factors.
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