Mark 2010 Abstract IOC60

Mark FC (2010) Mitochondrial plasticity and environmental change in Antarctic, Austral and temperate fish and cephalopods. MiPNet15.10.

Link:

Mark FC (2010)

Event: IOC60

The efficiency and adaptive plasticity of mitochondrial metabolism is one of the key factors shaping organismal tolerance towards environmental change. We thus investigated the adaptive capacities of mitochondrial metabolism in Antarctic & Austral notothenioids (Nothothenia rossii, N. coriiceps, N. angustata) and temperate Sea Bass (Dicentrarchus labrax) with respect to some important factors that will influence the survival of marine life in the near future: global warming (elevated sea temperatures), ocean acidification (elevated CO2 levels) and hypoxia tolerance. Specifically we analysed the function and contribution of the single respiratory complexes to total mitochondrial metabolism, as well as membrane potential and proton leak. In all experiments, mitochondrial measurements were made under acute thermal challenges, comparing liver and heart mitochondria from either differently acclimated individuals (thermal acclimation, CO2 acclimation, the combination thereof) or from individuals selected for a specific phenotypic trait (hypoxia tolerance in D. labrax).

The implications of mitochondrial plasticity for long-term adaptation in a changing marine environment will be discussed.

• O2k-Network Lab: DE_Bremerhaven_MarkFC

Labels:

Stress:Hypoxia  Organism: Fish"Fish" is not in the list (Human, Pig, Mouse, Rat, Guinea pig, Bovines, Horse, Dog, Rabbit, Cat, ...) of allowed values for the "Mammal and model" property.  Tissue;cell: Cardiac Muscle"Cardiac Muscle" is not in the list (Heart, Skeletal muscle, Nervous system, Liver, Kidney, Lung;gill, Islet cell;pancreas;thymus, Endothelial;epithelial;mesothelial cell, Blood cells, Fat, ...) of allowed values for the "Tissue and cell" property., Hepatocyte; Liver"Hepatocyte; Liver" is not in the list (Heart, Skeletal muscle, Nervous system, Liver, Kidney, Lung;gill, Islet cell;pancreas;thymus, Endothelial;epithelial;mesothelial cell, Blood cells, Fat, ...) of allowed values for the "Tissue and cell" property.  Preparation: Isolated Mitochondria"Isolated Mitochondria" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property. 

Regulation: Respiration; OXPHOS; ETS Capacity"Respiration; OXPHOS; ETS Capacity" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property., Coupling; Membrane Potential"Coupling; Membrane Potential" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property. 

Event: IOC60"IOC60" is not in the list (A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, ...) of allowed values for the "Event" property.