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Physiological-enzymatic characteristics and inoculation of mycelial strains of Descolea antarctica Sing. in Nothofagus seedlings Electron. J. Biotechnol.
Valenzuela,Eduardo; Hipp,Joseline; Alonso,Claudia; Godoy,Roberto; Alberdi,Miren; Alvarez,Maricel; Saavedra,Isabel.
At present, reforestation has focused on native forests with anthropogenic intervention and eroded soils. There is interest in producing Nothofagus seedlings which can overcome adverse conditions encountered on reforestation sites. It is necessary to find new fungi that can be utilized as mycorrhizal inoculants and that enable the seedlings to increase their tolerance to adverse conditions. Two ectomycorrhizal strains of the fungus Descolea antarctica (D1 and D2) were cultured at different temperatures, pH levels and the activities of amylases, cellulases, and phosphatases were determined. In greenhouse and nursery trials, the growth responses of inoculated Nothofagus obliqua seedlings were evaluated. D1 and D2 exhibited the highest growth rates at 23ºC....
Tipo: Journal article Palavras-chave: Cellulose; Ectomycorrhizal fungi; Nothofagus; PH; Phosphatase; Temperature.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000200012
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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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