Premium
HKT sodium and potassium transporters in Arabidopsis thaliana and related halophyte species
Author(s) -
Ali Akhtar,
Raddatz Natalia,
Pardo Jose M.,
Yun DaeJin
Publication year - 2021
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/ppl.13166
Subject(s) - halophyte , salinity , arabidopsis thaliana , arabidopsis , transporter , potassium , sodium , vacuole , biology , ion transporter , halophile , chemistry , botany , biochemistry , microbiology and biotechnology , ecology , membrane , cytoplasm , genetics , gene , organic chemistry , bacteria , mutant
High salinity induces osmotic stress and often leads to sodium ion‐specific toxicity, with inhibitory effects on physiological, biochemical and developmental pathways. To cope with increased Na + in soil water, plants restrict influx, compartmentalize ions into vacuoles, export excess Na + from the cell, and distribute ions between the aerial and root organs. In this review, we discuss our current understanding of how high‐affinity K + transporters (HKT) contribute to salinity tolerance, focusing on HKT1‐like family members primarily involved in long‐distance transport, and in the recent research in the model plant Arabidopsis and its halophytic counterparts of the Eutrema genus. Functional characterization of the salt overly sensitive (SOS) pathway and HKT1‐type transporters in these species indicate that they utilize similar approaches to deal with salinity, regardless of their tolerance.