ZxSOS1 is essential for long-distance transport and spatial distribution of Na+ and K+ in the xerophyte Zygophyllum xanthoxylum

• DOI: 10.1007/s11104-013-1891-x
• Publication Date: 2013-09-25T07:32:49Z
• Authors: Qing Ma; Yi-Xiao Li; Hui-Jun Yuan; Jing Hu; Li Wei; Ai-Ke Bao; Jin-Lin Zhang; Suo-Min Wang
• Keywords: 0301 basic medicine; 03 medical and health sciences; 15. Life on land

Background and aims Two major adaptive strategies used by Zygophyllum xanthoxylum ,aC 3 succulent xerophyte, against arid environments are absorbing a great quantity of Na + from low-salinity soil which is efficientlytransported tothe leaves, and maintainingthe stability of K + concentration in those leaves. The plasma membrane Na + /H + antiporter SOS1 has been suggested to be involved in Na + transport and correlated with K + nutrition in glycophytes. In this study, we investigated the function of the plasma membrane Na + /H + antiporter ZxSOS1 in long-distance transport and spatial distribution of Na + and K + in the xerophyte Z. xanthoxylum.