The influence of acclimation temperature on the phospholipid metabolism of an aquatic crustacea (Carcinus maenas)

✍ Scribed by Chapelle, Serge ;Zwingelstein, Georges ;Meister, Roger ;Brichon, Gérard

• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 647 KB
• Volume: 210
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1402100303

✦ Synopsis

Abstract

Incorporation of ^32^P into phospholipids from gills, hepatopancreas and muscle isolated from the crab Carcinus maenas was analysed at acclimation temperatures of 7°C and 27°C. Velocity of total phospholipid labelling from inorganic phosphate (P~i~) and acid‐soluble organic phosphate (PoAS) rose with an increase in environmental temperature. The velocity of biosynthesis of certain phosphatides was especially altered by thermal stress. The velocity of ^32^P incorporation into PA was increased at lower temperature (7°C), whereas the turn‐over of other phospholipids (particularly PC and SPH) was relatively low at the same temperature.

In general, the warm acclimation produced, in all tissues, an increased rate of ^32^P incorporation into PC and SPH accompanied with a negligible modification of the label entry into PE. It is suggested that the activity of the ^32^P~i~ → ^32^PA → ^32^PI pathway is increased at high temperature in gills and hepatopancreas and that the activity of LPC ⇄ PC deacylation‐acylation reaction in hepatopancreas depends on the temperature of the exterior medium.