Salinity adaptation of plasma membrane H+-ATPase in the salt marsh plant Spartina patens: ATP hydrolysis and enzyme kinetics

Abstract

Spartina patens, an intertidal C 4 grass, grows in the upper salt marsh and tolerates coastal seawater salinity. The regulation of ion movement across the plasma Introduction membrane (PM) for plant salt tolerance is thought to The C 4 grass, Spartina patens (Aiton) Muhl, grows in the be achieved by an electrochemical gradient generated upper part of salt and brackish marshes just above the by plasma membrane H+-ATPase. In this study, the Spartina alterniflora zone. It can tolerate coastal seawater change of PM H+-ATPase in response to NaCl was