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Front. Plant Sci. | doi: 10.3389/fpls.2019.01418

The importance of Cl− exclusion and vacuolar Cl− sequestration: revisit the role of chloride transport in plant salt tolerance

 Honghong Wu1, 2, 3* and Zhaohu Li1, 2
  • 1Huazhong Agricultural University, China
  • 2China Agricultural University (CAU), China
  • 3University of California, Riverside, United States

Salinity is a global issue that threatens agricultural production systems across the globe. While the major focus of researchers working in the field of plant salinity stress tolerance have always been on sodium and potassium, the transport patterns and physiological roles of Cl− in plant salt stress response are studied much less. In recent years, the role of Cl− in plant salinity stress tolerance has been revisited and received more attention. This review attempts to address the above knowledge gap of chloride in plant salinity stress tolerance. In this review, besides Cl− transport, the role of Cl− extrusion and vacuolar Cl− sequestration in plant salinity stress tolerance were discussed. Furthermore, the identity of channels and transporters involved in Cl− transport in salt stressed plants was also discussed.

Keywords: chloride extrusion, chloride transport, ion channels and transporters, salinity stress tolerance, vacuolar chloride sequestration

Received: 02 Jul 2019; Accepted: 11 Oct 2019.

Copyright: © 2019 Wu and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Honghong Wu, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China, honghong.wu@mail.hzau.edu.cn