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Photosynthetic and antioxidant performance are differentially affected by short-term nitrogen supply in highbush blueberry cultivars Ciencia e Investigación Agraria
Yañez-Mansilla,Erwin; Cartes,Paula; Reyes-Díaz,Marjorie; Ribera-Fonseca,Alejandra; Alberdi,Miren.
Nitrogen (N) is an essential nutrient for photosynthesis and may influence phenolic compound synthesis in higher plants. The effect of different amounts of N (0 to 38 mM) provided on a short-term (4 d) basis on the photosynthetic and antioxidant performance of highbush blueberry cultivars (Legacy and Bluegold) grown in a nutrient solution was studied. In both cultivars, the N concentration of leaves slightly increased in response to the N supply, with Bluegold frequently showing higher N concentrations than Legacy. Photosynthesis was reduced in Bluegold at the highest N dose, whereas in Legacy, a decrease of CO2 assimilation occurred under N starvation. This decrease in photosynthesis was accompanied by enhanced lipid peroxidation but only in Bluegold. In...
Tipo: Journal article Palavras-chave: Nitrogen; Oxidative damage; Phenolic compounds; Superoxide dismutase; Vaccinium corymbosum.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000100006
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