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    Impact of selenium fertilization on the activity of detoxifying enzymes of H2O2 in bean plants

    Hermosillo-Cereceres MA1, E Sánchez1, E Muñoz-Márquez1, A Guevara-Aguilar1, M García-Bañuelos1, D Ojeda-Barrios2

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 347-352, 2014, DOI:10.32604/phyton.2014.83.347

    Abstract Selenium (Se) is an essential element for many organisms, although in high concentrations it may become toxic, leading to the generation of reactive oxygen species (ROS). In this study, bean plants received different application rates of Se (0, 10, 20, 40, 80, and 160 µM) in the form of selenite and selenate to evaluate the activity of the detoxifying enzymes of H2O2. The results indicated that the activity of these enzymes in bean plants depended on the chemical form of Se: selenite at rates of 20 µM or greater diminished biomass and yield, increasing the activity of superoxide dismutase (SOD).… More >

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