Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants
Abiotic stressors such as drought, heat, or salinity are major causes of yield loss worldwide due to the oxidative burst generated under these conditions. Recent studies have revealed that plant response to a combination of different environmental stressors is unique and cannot be deduced from the r...
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MDPI AG
2019-03-01
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| Series: | Antioxidants |
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| Online Access: | https://www.mdpi.com/2076-3921/8/4/81 |
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| author | María García-Martí María Carmen Piñero Francisco García-Sanchez Teresa C. Mestre María López-Delacalle Vicente Martínez Rosa M. Rivero |
| author_facet | María García-Martí María Carmen Piñero Francisco García-Sanchez Teresa C. Mestre María López-Delacalle Vicente Martínez Rosa M. Rivero |
| author_sort | María García-Martí |
| collection | DOAJ |
| description | Abiotic stressors such as drought, heat, or salinity are major causes of yield loss worldwide due to the oxidative burst generated under these conditions. Recent studies have revealed that plant response to a combination of different environmental stressors is unique and cannot be deduced from the response developed to each stress when applied individually. Some studies have demonstrated that a different management of some nutrients in the irrigation solution may provide an advantage to the plants against abiotic stressors. Thus, the aim of this study was to investigate if an increase in potassium (K<sup>+</sup>) and calcium (Ca<sup>2+</sup>) concentration in the nutrient solution may have a positive effect on the amelioration of oxidative stress which occurs under the combination of salinity and heat in tomato plants. Our results indicated that plants irrigated with an increase in K<sup>+</sup> and Ca<sup>2+</sup> concentrations in the irrigation solution from 7mM (K<sup>+</sup>) to 9.8 mM and from 4 mM (Ca<sup>2+</sup>) to 5.6 mM, respectively, induced a recovery of the biomass production compared to the plants treated with salinity or salinity + heat, and subsequently irrigated with the regular Hoagland solution. This was correlated with a better performance of all the photosynthetic parameters, a reduction in the foliar concentration of H<sub>2</sub>O<sub>2</sub> and a lower lipid peroxidation rate, and with a better performance of the antioxidant enzymes ascorbate peroxidase ascorbate peroxidase (APX), dehydroascorbate reductactase (DHAR), glutathione reductase (GR), and NADPH oxidase. Our results showed that these enzymes were differentially regulated at the transcriptional level, showing a higher reactive oxygen species (ROS) detoxification efficiency under salinity and under the combination of salinity and heat, as compared to those plants irrigated with common Hoagland. An increase in K<sup>+</sup> and Ca<sup>2+</sup> in the irrigation solution also induced a lower Na<sup>+</sup> accumulation in leaves and a higher K<sup>+</sup>/Na<sup>+</sup> ratio. Thus, our study highlights the importance of the right management of the plant nutritional status and fertilization in order to counteract the deleterious effects of abiotic stress in plants. |
| first_indexed | 2024-03-12T07:11:13Z |
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| id | doaj.art-791dc1aeb1ad4d55a39c870db3932fcd |
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| last_indexed | 2024-03-12T07:11:13Z |
| publishDate | 2019-03-01 |
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| spelling | doaj.art-791dc1aeb1ad4d55a39c870db3932fcd2023-09-02T23:04:46ZengMDPI AGAntioxidants2076-39212019-03-01848110.3390/antiox8040081antiox8040081Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato PlantsMaría García-Martí0María Carmen Piñero1Francisco García-Sanchez2Teresa C. Mestre3María López-Delacalle4Vicente Martínez5Rosa M. Rivero6Department of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainDepartment of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainDepartment of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainDepartment of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainDepartment of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainDepartment of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainDepartment of Plant Nutrition, Campus Universitario de Espinardo, CEBAS-CSIC, Ed 25, Espinardo, 30100 Murcia, SpainAbiotic stressors such as drought, heat, or salinity are major causes of yield loss worldwide due to the oxidative burst generated under these conditions. Recent studies have revealed that plant response to a combination of different environmental stressors is unique and cannot be deduced from the response developed to each stress when applied individually. Some studies have demonstrated that a different management of some nutrients in the irrigation solution may provide an advantage to the plants against abiotic stressors. Thus, the aim of this study was to investigate if an increase in potassium (K<sup>+</sup>) and calcium (Ca<sup>2+</sup>) concentration in the nutrient solution may have a positive effect on the amelioration of oxidative stress which occurs under the combination of salinity and heat in tomato plants. Our results indicated that plants irrigated with an increase in K<sup>+</sup> and Ca<sup>2+</sup> concentrations in the irrigation solution from 7mM (K<sup>+</sup>) to 9.8 mM and from 4 mM (Ca<sup>2+</sup>) to 5.6 mM, respectively, induced a recovery of the biomass production compared to the plants treated with salinity or salinity + heat, and subsequently irrigated with the regular Hoagland solution. This was correlated with a better performance of all the photosynthetic parameters, a reduction in the foliar concentration of H<sub>2</sub>O<sub>2</sub> and a lower lipid peroxidation rate, and with a better performance of the antioxidant enzymes ascorbate peroxidase ascorbate peroxidase (APX), dehydroascorbate reductactase (DHAR), glutathione reductase (GR), and NADPH oxidase. Our results showed that these enzymes were differentially regulated at the transcriptional level, showing a higher reactive oxygen species (ROS) detoxification efficiency under salinity and under the combination of salinity and heat, as compared to those plants irrigated with common Hoagland. An increase in K<sup>+</sup> and Ca<sup>2+</sup> in the irrigation solution also induced a lower Na<sup>+</sup> accumulation in leaves and a higher K<sup>+</sup>/Na<sup>+</sup> ratio. Thus, our study highlights the importance of the right management of the plant nutritional status and fertilization in order to counteract the deleterious effects of abiotic stress in plants.https://www.mdpi.com/2076-3921/8/4/81abiotic stress combinationheat stresssalinityphotosynthesislipid peroxidationROS detoxificationantioxidant-related genesantioxidant enzymes |
| spellingShingle | María García-Martí María Carmen Piñero Francisco García-Sanchez Teresa C. Mestre María López-Delacalle Vicente Martínez Rosa M. Rivero Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants Antioxidants abiotic stress combination heat stress salinity photosynthesis lipid peroxidation ROS detoxification antioxidant-related genes antioxidant enzymes |
| title | Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants |
| title_full | Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants |
| title_fullStr | Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants |
| title_full_unstemmed | Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants |
| title_short | Amelioration of the Oxidative Stress Generated by Simple or Combined Abiotic Stress through the K<sup>+</sup> and Ca<sup>2+</sup> Supplementation in Tomato Plants |
| title_sort | amelioration of the oxidative stress generated by simple or combined abiotic stress through the k sup sup and ca sup 2 sup supplementation in tomato plants |
| topic | abiotic stress combination heat stress salinity photosynthesis lipid peroxidation ROS detoxification antioxidant-related genes antioxidant enzymes |
| url | https://www.mdpi.com/2076-3921/8/4/81 |
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