THE EFFECT OF TEMPERATURE ACCLIMATION ON PATHWAYS OF GLUCOSE METABOLISM IN THE TROUT

摘要: In warm (15 °C) acclimated Salvelinus fontinalis, (i) the respiration of epaxial muscle homogenates was almost completely inhibited by iodoacetate; (ii) C14O2 incorporated primarily into positions 3, 4 liver glycogen, and (iii) in vivo vitro glucose-1-C14 metabolism similar to that glucose-6-C14. The results suggest a predominant participation Embden–Meyerhof path.In cold-acclimated (4 trout, higher less sensitive glycogen appeared carbon atoms 3 4; there sharp discrimination between C1- C6- labelled glucose; (iv) acetate-1-C14 oxidation lower, but incorporation fat than warm-adapted fish. An activation pentose phosphate cycle conjunction with rate synthesis during cold compensation could account for all foregoing data.