Manejo de irrigação para pastagens.

bitstream/item/102257/1/Folder-Manejo-Irrigacao.pdf1 folder

El joven portero de fútbol sala: una evaluación del desarrollo motor

Esta investigación de carácter descriptivo es una observación en la que tuvimos como objetivo evaluar el grado de desarrollo del patrón fundamental manipulativo de recibir y lanzar, en 10 niños de 7 y 8 años que actúan como porteros en equipos de fútbol sala en la ciudad de Caxias do Sul en Brasil. En el trabajo se ha utilizado la técnica de observación indirecta a través del análisis de vídeo. Los datos fueron analizados según la matriz de desempeño y estadios propuesta por Gallahue y Ozmun. Los resultados han apuntado que apenas 30% de los evaluados se encuentran en el estadio maduro para los patrones manipulativos de lanzar y recibir, con que hemos concluido que el tipo de trabajo desarrollado con los porteros en las escuelas de fútbol sala de Caxias do Sul no promueve el desarrollo de este tipo de habilidad

Leaf apoplastic proteome composition in UV-B treated Arabidopsis thaliana mutants impaired in extracellular glutathione degradation

AbstractIn plants, environmental perturbations often result in oxidative reactions in the apoplastic space, which are counteracted for by enzymatic and non-enzymatic antioxidative systems, including ascorbate and glutathione. However, the occurrence of the latter and its exact role in the extracellular space are not well documented. In Arabidopsis thaliana, the gamma-glutamyl transferase isoform GGT1 bound to the cell wall takes part in the so-called gamma-glutamyl cycle for extracellular glutathione degradation and recovery, and may be implicated in redox sensing and balance.In this work, oxidative conditions were imposed with UV-B radiation and studied in redox altered ggt1 mutants. Elevated UV-B has detrimental effects on plant metabolism, plasma membranes representing a major target for ROS generated by this harmful radiation. The response of ggt1 knockout Arabidopsis leaves to UV-B radiation was assessed by investigating changes in apoplastic protein composition.We then compared the expression changes resulting from the mutation and from the UV-B treatment. Rearrangements occurring in apoplastic protein composition suggest the involvement of hydrogen peroxide, which may ultimately act as a signal. Other important changes related to hormonal effects, cell wall remodeling, and redox activities are also reported. We argue that oxidative stress conditions imposed by UV-B and by disruption of the gamma-glutamyl cycle result in similar stress-induced responses, to some degree at least. Data shown here are associated with the article from Trentin et al. (2015) [1]; protein data have been deposited to the PRIDE database (Vizcaíno et al., 2014) [2] with identifier http://www.ebi.ac.uk/pride/archive/projects/PXD001807

Produção de matéria seca dos componentes vegetais do milheto em diferentes níveis de disponibilidade hídrica e níveis de corte.

CONGREGA 2012

Produção de matéria seca de folhas de milheto em condição de estresse hídrico e níveis de corte.

Congrega 2012