Exogenous Application of Salicylic Acid Modulates Oxidative Stress during the Seed Development of Rice (Oryza sativa L.) Grain
Author/s
Pinciroli, María; Domínguez Perles, Raúl; Medina, Sonia; Oger, Camille; Guy, Alexandre; [et al.]Date
2023-02-23Discipline/s
Agricultura y VeterinariaSubject/s
Seed developmentSalicylic acid
Phytoprostanes
Phytofurans
Oxidative stress
Rice
Abstract
The present study aimed to discover the effects of exogenously foliar-applied salicylic acid (SA) in concentrations of 0, 1 and 15 mM (applied 7 and 21 days after heading) on oxidative stress. The effects were monitored through the concentrations of phytoprostanes (PhytoPs) and phytofurans (PhytoFs) in immature and mature grains of three genotypes of rice (‘R52’, ‘R45’ and ‘Yerua’), and their influence on grains per panicle and chalkiness. Chromatographic separation of PhytoPs and PhytoFs was performed using a UHPLC coupled to triple quadrupole-MS/MS (Agilent Technologies, Germany). The concentrations of oxylipins showed differences in both harvest times (immature and mature) for each genotype. The advanced lines, ‘R52’ and ‘R45’, showed concentrations that were 24.0 and 79.0% lower than those of the immature grains, respectively. The PhytoFs concentration in “R45” was 46.0% lower in the mature grains. In unripe grains, SA reduced a single oxylipin of all those analyzed, while in matur...