Under saline/sodic stress,plants accumulate sodium(Na+)ions in their vacuoles to avert toxicity in the cytoplasm while simultaneously improving osmotic adjustment to the hypertonic soil solution and apoplast.This is a...Under saline/sodic stress,plants accumulate sodium(Na+)ions in their vacuoles to avert toxicity in the cytoplasm while simultaneously improving osmotic adjustment to the hypertonic soil solution and apoplast.This is a readily observable fact in every land species.However,how this universal process is achieved biochemically has become a matter of debate(Shabala et al.,2020).The mainstream view is that Na+proton(H^(+))antiport protein(s)accumulate Na+in the vacuolar lumen,against the ion electrochemical gradient,through the exchange with H^(+) that have been previously internalized by H^(+)pumps residing at the tonoplast.展开更多
文摘Under saline/sodic stress,plants accumulate sodium(Na+)ions in their vacuoles to avert toxicity in the cytoplasm while simultaneously improving osmotic adjustment to the hypertonic soil solution and apoplast.This is a readily observable fact in every land species.However,how this universal process is achieved biochemically has become a matter of debate(Shabala et al.,2020).The mainstream view is that Na+proton(H^(+))antiport protein(s)accumulate Na+in the vacuolar lumen,against the ion electrochemical gradient,through the exchange with H^(+) that have been previously internalized by H^(+)pumps residing at the tonoplast.
