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Down-regulation of catalase activity contributes to senescence induction in wheat leaves exposed to shading stress
Causin, Humberto Fabio; Marchetti, Cintia Florencia; Pena, Liliana Beatriz; Gallego, Susana Mabel; Barneix, Atilio Jose (Springer, 2015-01)In shaded wheat (Triticum aestivum L.) leaves, the suppression of blue radiation (BR) triggers senescence. This phenomenon is correlated to an increase in oxidative stress symptoms and a decrease of catalase (CAT) activity, ... -
Willow seedlings from photooxidized seeds accelerate cotyledon death and anticipate first leaf emergence: a histological and biochemical study following germination
Roqueiro, Gonzalo; Causin, Humberto Fabio; Ollé Resa, Carolina Patricia; Maroder, Horacio; Maldonado, Sara Beatriz (Wiley, 2013-10)In willow seeds, photooxidative damage is mainly restricted to the outer cotyledonary tissues, significantly reducing normal germination. Here we analyzed the damage generated in cotyledonary tissues and investigated whether ...