Nitrogen and photorespiration pathways, salt stress genotypic tolerance effects in tomato plants (Solanum lycopersicum L.)
Identificadores
URI: https://hdl.handle.net/10481/89753Metadatos
Mostrar el registro completo del ítemAutor
de la Torre González, Alejandro; Navarro León, Eloy; Blasco León, Begoña; Ruiz Sáez, Juan ManuelMateria
Salt stress Solanum lycopersicum L. Nitrogen metabolism Amino acid NUE Photorespiration
Fecha
2019Referencia bibliográfica
de la Torre-González, A., Navarro-León, E., Blasco, B., & Ruiz, J. M. (2020). Nitrogen and photorespiration pathways, salt stress genotypic tolerance effects in tomato plants (Solanum lycopersicum L.). Acta Physiologiae Plantarum, 42, 1-8.
Resumen
Nitrogen is necessary to synthesize compounds such as chlorophyll, amino acids, nucleic acids, proteins, lipids, and other nitrogen (N) metabolites. In this sense, saline stress produces a decrement in the quality and quantity of crop production around the world due to an osmotic and ionic imbalance that alters the N metabolism. The objective of this work is to verify if the genotypic variability and a better nitrogen metabolism regulation improve tolerance to saline stress in tomato plants. This study was conducted with (Grand Brix and Marmande RAF) two tomato commercial genotypes (Solanum lycopersicum L). N forms, N metabolism, N use efficiency (NUE) parameters and amino acid profile were analyzed. A greater GS/GOGAT cycle enzyme activity could promote a better N integration in the plant, besides it promotes the generation of osmoprotective amino acids such as proline and improves the salt stress tolerance. A more effective N metabolism regulation indicates more salt tolerance. Our results showed a better effective N metabolism regulation by Grand Brix.