Phosphate compounds in tissues of the cecropia silkmoth during diapause and development

摘要: Abstract The acid-soluble phosphates from tissues of diapausing and developing pupae the cecropia silkmoth have been analysed with a view to gaining evidence on metabolic regulation during metamorphosis. wing epidermis fat body were fractionated by ion-exchange chromatography measured directly isotope dilution. Results corrected for occluded haemolymph. Some measurements also made incorporation injected 32 P. Inorganic phosphate in is very low (0·1–0·6 μmole/g) taken up haemolymph slowly diapause more rapidly adult; tissue it lower than surrounding In both tissues, ATP:ADP ratios are high rise little at beginning development, while AMP remains low; this, concluded that limitation biosynthetic rates not result deficient oxidative phosphorylation. α-Glycerophosphate rises suggesting characterized elevation reduced coenzymes. Both contain relatively levels uridine diphosphate sugar derivatives UTP. body, there phosphagen. Phosphorylethanolamine, phosphorylcholine, glycero-phosphorylcholine abundant accumulating prolonged diapause.