Fig. 7

A schematic model for the salinity tolerance mechanisms in Supreme versus the salinity tolerance mechanisms in Parish. Numbers indicated are intracellular and extracellular Na⁺ concentrations. ROS detoxification and maintaining K⁺ uptake under salt stress are two common mechanisms for salinity tolerance in both cultivars. High Na⁺ levels in Supreme under normal and salt-treated conditions lower the water potential, preventing water loss. Moreover, an array of salt stress inducible transcription factors is highly expressed in Supreme under normal conditions, possibly induced by the Ca²⁺ signaling pathway due to Na⁺ accumulation under normal conditions, making Supreme prepared for salt stress