Abstract

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.

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