Figure 7.

A proposed model illustrating the mechanism of the OsABT gene to improve the salt tolerance of roots at the rice seedling stage. OsABT confers salt tolerance to rice seedling roots by inhibiting ROS accumulation, maintaining intracellular Na⁺ and K⁺ balance, and regulating the ABA content. Meanwhile, OsABT interacts with OsPYL4/10 and OsABIL2, and negatively regulates the expression of ABA signal transduction-related genes and ABA responsive genes, resulting in the attenuation of ABA signaling. OsABT may affect the ROS levels and Na⁺/K⁺ balance through the ABA signaling pathway to regulate root salt tolerance in rice seedlings.