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Transport, signaling, and homeostasis of potassium and sodium in plants
Author(s) -
Adams Eri,
Shin Ryoung
Publication year - 2014
Publication title -
journal of integrative plant biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.734
H-Index - 83
eISSN - 1744-7909
pISSN - 1672-9072
DOI - 10.1111/jipb.12159
Subject(s) - homeostasis , potassium , sodium , plant growth , salt (chemistry) , shoot , chemistry , biophysics , microbiology and biotechnology , biochemistry , biology , botany , organic chemistry
Potassium (K + ) is an essential macronutrient in plants and a lack of K + significantly reduces the potential for plant growth and development. By contrast, sodium (Na + ), while beneficial to some extent, at high concentrations it disturbs and inhibits various physiological processes and plant growth. Due to their chemical similarities, some functions of K + can be undertaken by Na + but K + homeostasis is severely affected by salt stress, on the other hand. Recent advances have highlighted the fascinating regulatory mechanisms of K + and Na + transport and signaling in plants. This review summarizes three major topics: (i) the transport mechanisms of K + and Na + from the soil to the shoot and to the cellular compartments; (ii) the mechanisms through which plants sense and respond to K + and Na + availability; and (iii) the components involved in maintenance of K + /Na + homeostasis in plants under salt stress.