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Effect of environmental temperature on the phospholipid metabolism of gill mitochondria of Carcinus maenas
Chapelle, S.; Brichon, G.; Zwingelstein, G. (1981). Effect of environmental temperature on the phospholipid metabolism of gill mitochondria of Carcinus maenas. Biochem. Syst. Ecol. 9(4): 333-338. dx.doi.org/10.1016/0305-1978(81)90018-1
In: Biochemical systematics and ecology. Elsevier: Oxford; New York. ISSN 0305-1978, more
Peer reviewed article  

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Keyword
    Marine
Author keywords
    Carcinus maenas crab; environmental temperature; gill mitochondria; ethanolamine incorporation; phosphatidylcholine; phosphatidylethanolamine

Authors  Top 
  • Chapelle, S.
  • Brichon, G.
  • Zwingelstein, G.

Abstract
    The different types of phospholipids extracted from gill mitochondria of crab Carcinus maenas have been analysed and it was found that a significant increase of the phosphatidylethanolamine (PE) content and a concomitant decrease of the phosphatidylcholine (PC) amount are present in animals living in low temperatures. The incorporation of [3H]ethanolamine in total phospholipids, PE and PC, was demonstrated in gill mitochondria and a thermal alteration of the in vivo exchange of PE between mitochondria and 10,000 g supernatant is suggested by the kinetics of the incorporation. It is suggested that the conversion of PE to PC by N-methylation is very low in crab gills. There is a marked action of acclimation temperature on the gills-hemolymph exchange of PC and PE. It is postulated that the changes reported at the level of the PE → PC conversion by N-methylation and in phospholipid exchange between hemolymph and gills could be implicated in adapting the organism to seasonal fluctuations of environmental temperatures.

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