Silicon and Gibberellins: Synergistic Function in Harnessing ABA Signaling and Heat Stress Tolerance in Date Palm (Phoenix dactylifera L.).

ABSTRACT: Date palm is one of the most economically vital fruit crops in North African and Middle East countries, including Oman. A controlled experiment was conducted to investigate the integrative effects of silicon (Si) and gibberellic acid (GA₃) on date palm growth and heat stress. The exogenous application of Si and GA₃ significantly promoted plant growth attributes under heat stress (44 ± 1 °C). The hormonal modulation (abscisic acid [ABA] and salicylic acid [SA]), antioxidant accumulation, and the expression of abiotic stress-related genes were evaluated. Interestingly, heat-induced oxidative stress was markedly reduced by the integrative effects of Si and GA₃ when compared to their sole application, with significant reductions in superoxide anions and lipid p

SUBMITTER: Khan A 

PROVIDER: S-EPMC7285242 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature