Effects of sub optimal temperatures in different clones of Eucalyptus globulus Labill. using imaging techniques and determination of the activity of antioxidative enzymes

• Grant number: 05/54089-6
• Support Opportunities: Scholarships abroad - Research
• Start date: February 01, 2006
• End date: March 31, 2006
• Field of knowledge: Biological Sciences - Botany - Pant Physiology
• Principal Investigator: Fernando Broetto
• Grantee: Fernando Broetto
• Host Investigator: Maria Manuela C.C.F. Chaves
• Host Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
• Institution abroad: Universidade Técnica de Lisboa, Portugal

Abstract

The recent development of a range of imaging technologies based on the new generation of CCD-detectors has enormously extended the potential for physiologists or agronomists to develop new approaches to the rapid and accurate remote diagnosis of a wide range of plant stresses. These new imaging technologies, which include thermal imaging using new lighweight uncooled cameras, fluorescence imaging and multi- or hyper-spectral reflectance imaging, have introduced new tools for detection and quantification of plant responses to environmental or biotic stresses. Further advances in technology are now opening up the opportunity both to combine one or more of these new technologies in a more sophisticated way to enhance their diagnostic power in the laboratory and, importantly, to extend their use the field. In addition to improving our capacity to diagnose different stresses, these new imaging technologies are providing powerful new tools for understanding the physiological processes involved in plant responses to environment. Important processes that can be studied include defense reactions to pathogens and the regulation of photosynthesis and water use. A key feature of this project is bringing together contrasting imaging technologies to answer critical questions in plant physiology that relate to the mechanisms of plant response to environmental and biotic stresses and providing new approaches to stress diagnosis. Parallelely examine the effect of sub-optimal temperatures on the activity of two important enzymes of the antioxidative response system, i.e. SOD and catalase. (AU)