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Fig. 1 | BMC Plant Biology

Fig. 1

From: Na+/K+ Balance and Transport Regulatory Mechanisms in Weedy and Cultivated Rice (Oryza sativa L.) Under Salt Stress

Fig. 1

Transport regulatory mechanisms of Na+ in plants under salt stress. High-affinity K+ transporter (HKT1) mediate Na+-specific transport or Na+-K+ transport, and play a key role in regulation of Na+ homeostasis. Salt overly sensitive 1 (SOS1) plasma membrane Na+/H+ antiporter exports intracellular Na+ to extracellular. Sodium-hydrogen exchanger (NHX1)in the tonoplast can sequestrate Na+ into the vacuole. While balancing the Na+ in the cytoplasm, SOS1 and NHX1 convert H+ in the extracellular and vacuolar into the cytoplasm, and excess H+ in the cytoplasm are transported to extracellular by consuming energy (ATP is converted to ADP + Pi)

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