Exogenous Application of Salicylic Acid Modulates Oxidative Stress during the Seed Development of Rice (<i>Oryza sativa</i> L.) Grain
María Pinciroli,
Raúl Domínguez-Perles,
Sonia Medina,
Camille Oger,
Alexandre Guy,
Thierry Durand,
Mari Merce Cascant-Vilaplana,
José Antonio Gabaldón-Hernández,
Federico Ferreres,
Ángel Gil-Izquierdo
Affiliations
María Pinciroli
Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, University Campus of Espinardo-Edif. 25, 30100 Espinardo, Spain
Raúl Domínguez-Perles
Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, University Campus of Espinardo-Edif. 25, 30100 Espinardo, Spain
Sonia Medina
Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, University Campus of Espinardo-Edif. 25, 30100 Espinardo, Spain
Camille Oger
Institut des Biomolécules Max Mousseron (IBMM), Pôle Chimie Balard Recherche, UMR 5247, CNRS, University of Montpellier, ENSCM, 34000 Montpellier, France
Alexandre Guy
Institut des Biomolécules Max Mousseron (IBMM), Pôle Chimie Balard Recherche, UMR 5247, CNRS, University of Montpellier, ENSCM, 34000 Montpellier, France
Thierry Durand
Institut des Biomolécules Max Mousseron (IBMM), Pôle Chimie Balard Recherche, UMR 5247, CNRS, University of Montpellier, ENSCM, 34000 Montpellier, France
Mari Merce Cascant-Vilaplana
Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, University Campus of Espinardo-Edif. 25, 30100 Espinardo, Spain
José Antonio Gabaldón-Hernández
Molecular Recognition and Encapsulation Research Group (REM), Health Sciences Department, Universidad Católica de Murcia (UCAM), Campus de los Jerónimos 135, 30107 Guadalupe, Spain
Federico Ferreres
Molecular Recognition and Encapsulation Research Group (REM), Health Sciences Department, Universidad Católica de Murcia (UCAM), Campus de los Jerónimos 135, 30107 Guadalupe, Spain
Ángel Gil-Izquierdo
Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, University Campus of Espinardo-Edif. 25, 30100 Espinardo, Spain
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 mature grains, a significant decrease in six of the ten monitored biomarkers was observed. The SA produced an increase in grains per panicle, and a decrease in chalkiness. Therefore, salicylic acid-mediated antioxidant regulatory capacities due to oxylipin down-regulation could favor grain filling and, hence, rice production.
