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Type: Journal article
Title: Chloride on the move
Author: Li, B.
Tester, M.
Gilliham, M.
Citation: Trends in Plant Science, 2017; 22(3):236-248
Publisher: Elsevier
Issue Date: 2017
ISSN: 1360-1385
Statement of
Bo Li, Mark Tester and Matthew Gilliham
Abstract: Chloride (Cl-) is an essential plant nutrient but under saline conditions it can accumulate to toxic levels in leaves; limiting this accumulation improves the salt tolerance of some crops. The rate-limiting step for this process - the transfer of Cl- from root symplast to xylem apoplast, which can antagonize delivery of the macronutrient nitrate (NO3-) to shoots - is regulated by abscisic acid (ABA) and is multigenic. Until recently the molecular mechanisms underpinning this salt-tolerance trait were poorly defined. We discuss here how recent advances highlight the role of newly identified transport proteins, some that directly transfer Cl- into the xylem, and others that act on endomembranes in 'gatekeeper' cell types in the root stele to control root-to-shoot delivery of Cl-.
Keywords: ALMT9
long-distance transport
Rights: © 2016 Elsevier Ltd. All rights reserved.
DOI: 10.1016/j.tplants.2016.12.004
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Appears in Collections:Agriculture, Food and Wine publications
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