TY - JOUR
T1 - Chloride on the Move
AU - Li, Bo
AU - Tester, Mark A.
AU - Gilliham, Matthew
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors thank the Australian Research Council (ARC) for funding M.G. through FT130100709 and CE140100008, and M.T. through DP1095542; the Grains Research and Development Corporation (Australia) for funding M.T. through UA00118 and M.G. through UA00145; and Wine Australia and the Waite Research Institute for funding M.G. Financial support to M.T. from the King Abdullah University of Science and Technology is also gratefully acknowledged.
PY - 2017/1/9
Y1 - 2017/1/9
N2 - 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−.
AB - 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−.
UR - http://hdl.handle.net/10754/622798
UR - http://www.sciencedirect.com/science/article/pii/S1360138516302047
UR - http://www.scopus.com/inward/record.url?scp=85013634449&partnerID=8YFLogxK
U2 - 10.1016/j.tplants.2016.12.004
DO - 10.1016/j.tplants.2016.12.004
M3 - Article
C2 - 28081935
SN - 1360-1385
VL - 22
SP - 236
EP - 248
JO - Trends in Plant Science
JF - Trends in Plant Science
IS - 3
ER -