Oxygenomics in environmental stress

Stress , Environmental

Acute An exposure to an environmental stress that is brief in relation to the temporal scale of the biological system exposed. Biosphere All the plants and animals on Earth, together with the habitat they need for long-term survival. Biotic impoverishment The decline of a species to the point of having little or no ecological significance. Chronic An exposure to an environmental stress that is ...

Oxidative Stress – Environmental Induction

Environmental stress responses in Lactococcus lactis

Bacteria can encounter a variety of physical conditions during their life. Bacterial cells are able to survive these (often adverse) conditions by the induction of specific or general protection mechanisms. The lactic acid bacterium Lactococcus lactis is widely used for the production of cheese. Before and during this process as well as in its natural habitats, it is subjected to several stress...

Prion Switching in Response to Environmental Stress

Evolution depends on the manner in which genetic variation is translated into new phenotypes. There has been much debate about whether organisms might have specific mechanisms for "evolvability," which would generate heritable phenotypic variation with adaptive value and could act to enhance the rate of evolution. Capacitor systems, which allow the accumulation of cryptic genetic variation and ...

Environmental Pollution and Oxidative Stress in Fish

Living systems encounter a variety of stresses during their continuous interaction with environment. Environmentally-induced stresses frequently activate the endogenous production of reactive oxygen species (ROS), most of which are generated as side products of tissue respiration. Hence, constant exposure to stressors may enhance ROS-mediated oxidative damage. Increased number of agricultural a...