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A strategy for the identification of new abiotic stress determinants in arabido...
Azevedo, Herlânder; Correia, Joana Silva; Oliveira, Juliana Alice Ferreira; Laranjeira, Sara; Barbeta, C.; Silva, Vitor Amorim; Botella Mesa, MiguelSince the sequencing of the Arabidopsis thaliana genome in 2000, plant researchers have faced the complex challenge of assigning function to thousands of genes. Functional discovery by in silico prediction or homology search resolved a significant number of genes, but only a minor part has been experimentally validated. Arabidopsis entry into the post-genomic era signified a massive increase in high-throughput ...
Identification of Zantedeschia aethiopica Cat1 and Cat2 catalase genes and thei...
Neto, T. Lino; Piques, M. C.; Barbeta, C.; Sousa, M. F.; Tavares, R. M.; Pais, M. S.Plants encode catalase (CAT; EC 1.11.1.6) as multigene families, which may reflect the multiple and diverse roles played by this enzyme. Catalases from higher plants can be subdivided into three distinct types, according to their phylogenetic relationship. However, there is not a specific correlation of phylogeny and function within these groups, as catalases from the same type can play different specific roles...
Peroxisomal metabolism alterations associated to Z. aethiopica spathe senescenc...
Barbeta, C.; Pais, M. S.; Tavares, R. M.; Neto, T. LinoThe development of the C3 monocot Zantedeschia aethiopica floral spathe has been used as a natural model for studying the physiological and biochemical features of senescence. This photosynthetic leaf-like organ undergoes senescence displaying the common features of leaf senescence, such as loss of protein, chlorophyll and a decline on photosynthetic ability. Fruiting inhibits the ongoing spathe senescence and ...
Changes in peroxisomal metabolism during Zantedeschia aethiopica spathe senesce...
Barbeta, C.; Pais, M. S.; Tavares, R. M.; Neto, T. LinoPoster apresentado no 14th Federation of European Societies of Plant Biology Congress, em 2004, Cracóvia, Polónia. ; Zantedeschia aethiopica spathe undergoes whitening displaying the common features of foliar senescence. After pollination, the spathe region surrounding the fruits undergo regreening, thus reacquiring photosynthetic ability. In this work, changes in peroxisomal metabolism were studied in what co...
Does oxidative stress metabolism play a role in Zantedeschia aethiopica spathe ...
Barbeta, C.; Piques, M. C.; Pais, M. S.; Palme, Klaus; Tavares, R. M.; Neto, T. LinoApresentação efectuada no Oxidative Stress and Cell Signalling IBMC Advanced Course, 27 a 29 Outubro 2004, Porto. ; Plant senescence is a natural regulated and programmed process that leads ultimately to cell death. Numerous studies in different plant species have suggested a role for reactive oxygen species (ROS) in the progress of senescence programs, which is frequently associated with the degradative aspec...
Changes in peroxisomal metabolism during Z. aethiopica spathe senescence and re...
Barbeta, C.; Pais, M. S.; Tavares, R. M.; Neto, T. LinoZantedeschia aethiopica spathe undergoes whitening displaying the common features of foliar senescence. After pollination, the spathe region surrounding the fruits undergo regreening, thus reacquiring photosynthetic ability. In this work, changes in peroxisomal metabolism were studied in what concerns key-enzymes of glyoxylate and glycolate pathways. Putative roles for CAT1 and CAT2 are discussed. Material and ...
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