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  • Title: Leaf lipids of Ribes nigrum: a plant containing 16:3, alpha-18:3, gamma-18:3 and 18:4 fatty acids.
    Author: Dobson G.
    Journal: Biochem Soc Trans; 2000 Dec; 28(6):583-6. PubMed ID: 11171133.
    Abstract:
    The glycerolipid composition of Ribes nigrum (blackcurrant) leaves was determined. The total fatty acid composition was unusual in that alpha-linolenic acid (alpha-18:3) occurred together with cis-7,10,13-hexadecatrienoic acid (16:3) and lower amounts of stearidonic acid (18:4) and gamma-linolenic acid (gamma-18:3). Monogalactosyldiacylglycerol contained the highest proportion of 16:3 with less in digalactosyldiacylglycerol. gamma-18:3 and 18:4 were present in all lipids and 18:4 was always greater than gamma-18:3. The highest percentages of gamma-18:3 and 18:4 were in phosphatidylcholine, but phosphatidylglycerol was particularly low in these acids. In summary, the lipid composition was largely typical of 16:3 plants but there was a minor contribution typical of 18:4 plants. The possibility of three pathways for glycolipid biosynthesis is discussed.
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