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The functions of plant cation/proton antiporters

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Biologia Plantarum

Abstract

The cation/H+ exchange is a basic process in transmembrane transport. The acquisition of genome sequences has now established that plants possess genes encoding a large number of cation/proton antiporter 1 (CPA1) proteins, few of which have been characterized with respect to their contribution to ion homeostasis. The CPA1s comprise plasma membrane, vacuolar, and endosomal forms, and they have been identified as important for a salinity tolerance. They are, however, also involved in both the control of cellular pH and K+ homeostasis, and regulate processes over a wide range of physiological events, from vesicle trafficking to development.

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Abbreviations

AKT1:

Arabidopsis K+ transporter1

CPA1:

cation/proton antiporter 1

ER:

endoplasmic reticulum

IC:

intracellular

NhaP:

Na+/H+ antiporter

NHE:

sodium-hydrogen exchanger isoform

NHX:

Na(+)-H(+) exchanger

PPase:

proton pumping pyrophosphatase

PVC:

pre-vacuolar compartment

SOS1:

salt overly sensitive1

TGN:

trans-Golgi network

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Authors and Affiliations

  1. School of Life Science, Qufu Normal University, Qufu, 273165, Shandong, P.R. China

    W. Dong, D.-L. Li, N.-W. Qiu & Y.-G. Song

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  1. W. Dong
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  2. D.-L. Li
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  3. N.-W. Qiu
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  4. Y.-G. Song
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Correspondence to Y.-G. Song.

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Acknowledgments: This work was supported by the Shandong Provincial Natural Science Foundation, China (ZR2015JL012, ZR2014CP013), the National Natural Science Foundation for the Youth of China (grant nos. 31300220, 31501328), the China Postdoctoral Science Foundation (2014M550366), and the Science and Technology Project of the Qufu Normal University (XKJ201320).

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Dong, W., Li, DL., Qiu, NW. et al. The functions of plant cation/proton antiporters. Biol Plant 62, 421–427 (2018). https://doi.org/10.1007/s10535-018-0790-7

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