How do plants maintain pH and ion homeostasis under saline-alkali stress?

Jing Li; Yongqing Yang

doi:10.3389/fpls.2023.1217193

How do plants maintain pH and ion homeostasis under saline-alkali stress?

Front Plant Sci. 2023 Oct 17:14:1217193. doi: 10.3389/fpls.2023.1217193. eCollection 2023.

Authors

Jing Li¹, Yongqing Yang²

Affiliations

¹ Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China.
² College of Biological Sciences, China Agricultural University, Beijing, China.

Abstract

Salt and alkaline stresses often occur together, severely threatening plant growth and crop yields. Salt stress induces osmotic stress, ionic stress, and secondary stresses, such as oxidative stress. Plants under saline-alkali stress must develop suitable mechanisms for adapting to the combined stress. Sustained plant growth requires maintenance of ion and pH homeostasis. In this review, we focus on the mechanisms of ion and pH homeostasis in plant cells under saline-alkali stress, including regulation of ion sensing, ion uptake, ion exclusion, ion sequestration, and ion redistribution among organs by long-distance transport. We also discuss outstanding questions in this field.

Keywords: abiotic stress; ion homeostasis; pH homeostasis; plant cell; saline-alkali stress.

Publication types

Review

Grants and funding

This work is supported by the National Natural Science Foundation of China (NSFC) (Grant No.31800220 to JL; Grant No. 32070301 to YY) and Scientific Research Project of Beijing Municipal Commission of Education (Grant No. KM201910020014 to JL). Young Teacher Scientific Research Project of Beijing University of Agriculture (Grand No. 17ZK002 to JL).