Impact of mild chloride salinity on growth and nutritional quality of lettuce baby-leaves
| Autor: | García Rodríguez, Álvaro F., Lucas Gutiérrez, Marta, Moreno Racero, Francisco J., Santos-Torres, Irene, Álvarez, Rosario, Colmenero Flores, José M., Rosales Villegas, Miguel Á. |
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| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España) |
| Rok vydání: | 2021 |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 2 páginas.- 4 referencias.- Poster presentado en el BP2021: XXIV Reunión de la Sociedad Española de Biología de Plantas y XVII Congreso Hispano-Luso de Biología de Plantas, 7 y 8 de julio de 2021. online Chloride (Cl-) has traditionalIy been considered a damaging ion for agriculture because of its toxicity under salinity conditions and antagonism with nitrate (NO3-). However, Cl- nutrition at macronutrient levels (1-5 mM) has been proved as a potential strategy to improve the performance of different crops·. Mild salinity levels (20-40 mM NaCl) has al so been formulated as a promising way to increase phytochemicals withminimalloss of yield, modulating positively quality of vegetables· Among other effects, the beneficial Cl- nutrition reduces between 25-75% the NO3- content in leaves of adul! tobacco plants, potentialIy harmful to human health . The study of a potential fertilization with optimal N03-/CL- ratios is relevant to identify the best performance and nutritional quality ofyoung lettuce plants, for reducing NO3-, accumulation in leaves and nitrogen overfertilization practices, meaning a more sustainable agriculture for environment and human health. Therefore, in this work we aimed to elucidate the effects of el' supplied at both macronutrient and mild el' salinity levels on physiological parameters, el- and N03- content, ascorbic acid, and different antioxidant capacity tests in lettuce baby-leaves.Lettuce seeds were grown in semi-hydroponics under greenhouse conditions, and treated with four NO3- treatments: 5, 9, 12 and 15 mM of a mix of NO3-, salts. In addition, plants from each NO3- treatment were treated with two er treatments: 5 (5CL) and 25 (25CL) mM of a mix of Cl- salts, and a control treatment with a mix of sulphate+phosphate (SP) salts. Plants were harvested at 15 and 30 days after sowing, and tissues were stored for the analysis anions and antioxidants content.lnterestingly, our results revealed that the 25CL treatment caused the strongest increase of biomass and leaf area at 5 and 9 mM of NO3- levels compared to SP treatments, whereas the los s of water and the N03- contenl was significantly reduced in 25CL and 5CL treatments compared to SP treatments. Antioxidant determinations will be discussed on Ihe pos ter. Therefore, this work demonstrates for the first time the Cl- speeific function of mild Cl- salinity on the improvement of growth and nutritional quality in lettuce baby-leaves. Funding for the present research was provided by the Spanish Ministry of Science [nnovation and Universities-FEDER grant RTI2018-094460-B-100, Spanish Nationa[ Research Council grants CSIC-202040E266 and CS[C-202140E023, and European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska Curie grant agreement No 895613. |
| Databáze: | OpenAIRE |
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