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On the Function of Methyl-branched Chain Fatty Acids in Phospholipids of Cell Membranes of Higher Plants

  • Alfons Radunz

Summary

Mono-methyl branched fatty acids of the iso- and anteiso types with chain lengths of 12 to 22 carbon atoms were found in yellow-white leaves and petals of the plastome mutants “Prasinizans” of Antirrhinum majus and “Xanthi” of Nicotiana tabacum. These branched chain fatty acids are preponderantly esterified in the sn-2 position of the glycerol backbone of the membrane phospholipids namely phosphatidylcholine, phosphatidylethanolamine and phosphatidylinositol. The phospholipids appear to contain 16–24 per cent iso- and anteiso fatty acids, 19–47 per cent unsaturated and 38–63 per cent saturated fatty acids. The methyl-branched chain fatty acids seem to take over the function of the unsaturated fatty acids.

Key Words

Iso- and anteiso fatty acids phosphatidylcholine phosphatidyletha-nolamine phosphatidylinositol cell membrane plastome mutants of Antirrhinum majus “Prasinizans” and of Nicotiana tabacum “ Xanthi” 

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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Alfons Radunz
    • 1
  1. 1.Lehrstuhl Zellphysiologie, Fakultät für BiologieUniversität BielefeldBielefeld 1Germany

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