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Plant growth regulators: Effective strategy to improve salt tolerance in rice
Shiya Wang1, Yang Liu2, Fanglei He3
1College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, China.
Abstract:
Salt stress is one of the major constraints in global rice cultivation. Therefore, how to improve salt tolerance in rice has become a hot spot in current rice breeding. In recent years, plant growth regulators (PGRs) applications have been widely used as an environmentally friendly and rapid strategy to improve plant resistance. PGRs modulate the salt tolerance of rice by improving the rice plant shape, activating the defense system, regulating ion balance, and inducing gene expression. However, the effectiveness of these mitigating salt stress in rice depends on the salt tolerance of rice, the dose of PGRs applied, the duration of salt stress, and the stage of growth. Therefore, exploring the combined effects of PGRs on adaptation and tolerance to salt stress in rice is crucial for global food security and sustainable agricultural development. This review summarizes the response of rice to salt stress and analyzes the regulatory effects of exogenously applied PGRs to provide a theoretical basis for the application of PGRs.
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