Metabolic Elasticity and Induction of Heat Shock Protein 70 in Labeo rohita Acclimated to Three Temperatures
Year: 2006
Type: article
Abstract: The metabolic response of Labeo rohita to thermal acclimation was assessed.Advanced fingerlings of L. rohita (average weight 31±1.4 g) were acclimated to 31, 33 and 36°C compared with ambient temperatures (26°C) for 30 days and different enzymes associated with stress response were estimated.Glycolytic enzyme-Lactate dehydrogenase, (LDH, E.C.1.1.1.27),TCA cycle enzyme-Malate dehydrogenase (MDH, E.C.1.1.1.37),Protein metabolizing enzymes-Aspartate amino transferase (AST, E.C.2.6.1.1)and Alanine amino transferase (ALT, E.C.2.6.1.2) of liver, gill and muscle, Gluconeogenic enzymes-Fructose 1,6 Bi phosphatase (FBPase, E.C. 3.1.3.11) and Glucose 6 phosphatase (G6Pase, E.C. 3.1.3.9) of liver and kidney were significantly (p<0.05)different with increasing acclimation temperatures.Heat Shock Protein-70 (HSP-70) was expressed in increasing intensity at 31, 33 and 36°C but was not expressed at 26°C.Results suggest that higher acclimation temperatures enhance metabolism and L. rohita maintains homeostasis between 26-36°C via an acclimation episode.Such adaptation appears to be facilitated by resorting to gluconeogenic and glycogenolytic pathways for energy mobilization and induction of HSPs.(
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $370
OpenAlex ID: W1965212828