Title: THE EFFECT OF LOW TEMPERATURE ON THE CONTENT OF SIX FATTY ACIDS OF LIPIDS IN CELL MEMBRANE OF SPIRULINA
Abstract: Objective:To explore the variety of PM fatty acids of the Spirulina platensis(S1)from alkaline lake in Erdos Plateau and its relationship with low temperature resistance under low temperatures stress,and comparing them with that of S.platensis(S2)from Chad Lake in Africa at the same time.Methods:Using two-phase method to purify plasma membrane(PM),gas chromatography method for the determination of fatty acids relative contents of plasma membrane lipid.Results:As temperature is lowered,the total saturated fatty acids in PM of both S1 and S2 show a decreasing trend;while the total unsaturated fatty acids show an increasing tendency.Pamitoleic acid(16∶1)and linolenic acid(18∶3)in S1 increase obviously,while in S2 both reduce significantly;oleic acid(18∶1)and linoleic acid(18∶2) contents are on the contrary,decreasing in S1 and increasing in S2.Conclusion:Unsaturated fatty acids have the function of regulation under low temperature stress.It is speculated that key fatty acids in S1 PM,which are involved in low temperature resistance,may be pamitoleic acid and linolenic acid,especially the linolenic acid;while those in S2 may be of oleic acid and linoleic acid.S1 is stronger than S2 on anti-low temperature stress.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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