| Popis: |
When habitat temperature changes, body temperature follows in most fish. Thermal change can markedly shift the physical state of mitochondrial membranes, and may perturb the equilibrium among oxidative phosphorylation, proton leak, and ROS production. A fundamental response to thermal change occurs in mitochondrial phospholipids, with head groups and acyl chains changing to maintain membrane physical state. Mitochondrial enzyme levels and often mitochondrial abundance change, presumably to maintain capacity. This response sequence is common to many eurythermal temperate-zone fish, but gene-expression profiling shows suites of additional genes that change during thermal acclimation. |
