Endogenous oscillations in pathways of energy transduction as related to circadian rhythmicity and photoperiodic control.
Evidence is presented for endogenous rhythmicity in energy transducing sequences of cellular metabolism which result in a circadian rhythm in adenylate "energy charge" and redox state (NADPH/NADP). From phase dependent photocontrol of enzymatic activity and pyridine nucleotide pool-size levels it is concluded that light - via photoreceptor(s) of photoperiodic control - modulates energy flow under conditions where overall energy transduction displays a circadian rhythm. The results are discussed in relation to temporal organization of development in general.
D000469:Alkaline Phosphatase / Q000378:metabolism; D002940:Circadian Rhythm; D003624:Darkness; D004735:Energy Transfer; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases / Q000378:metabolism; D008027:Light; D008291:Malate Dehydrogenase / Q000378:metabolism; D009243:NAD; D009249:NADP; D010084:Oxidation-Reduction; D010734:Phosphogluconate Dehydrogenase / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D013696:Temperature
D009243:NAD; D009249:NADP; D008291:Malate Dehydrogenase; D010734:Phosphogluconate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases; D000469:Alkaline Phosphatase