Investigations of the Biosynthesis and Degradation of Unsaturated Fatty Acids in Higher Plants and Photosynthetic Bacteria

✍ Scribed by James, A. T. ;Harris, R. V. ;Hitchcock, C. ;Wood, B. J. B. ;Nichols, B. W.

• Publisher: John Wiley and Sons
• Year: 1965
• Weight: 368 KB
• Volume: 67
• Category: Article
• ISSN: 0931-5985
• DOI: 10.1002/lipi.19650670602

✦ Synopsis

A comparison of the biosynthesis of unsaturated fatty acids in higher plants, Chlorella vulgaris and photosynthetic bacteria showed that only the first two systems require oxygen as a cofactor. Photosynthetic bacteria degrade added fatty acids to acetate and synthesize their unsaturated acids by the anaerobic route irrespective of the presence or absence of air. Leaves and Chlorella synthesize linoleic and linolenic acids from oleic acid by direct desaturation. Oleic acid is synthesized differently by the two systems. Leaves degrade added fatty acids by a-oxidation: photosynthetic bacteria by f3-oxidation.

Etudes sur la biosynthbse et la d6comporttlon des acldes grar insatur6s dam les plantes supbrienrer at lea bactbries photo-synth6tlranter

Une comparaison de la biosynthbse des acides gras insatures dans les plantes supbrieures, Chlorella vulgaris et les bacteries photosynthbtisantes a montre que seuls les deux premiers systb-me8 necessitent de l'oxygbne comme cofacteur. Les bacteries photosynthetisantes decomposent en acetate les acides gras ajoutes et synthetisent des acides insatures d'une manibre anaerobie. Les feuilles et Chlorella synthetisent l'acide linolbique et linoldnique directement h partir de l'acide oleique. Celui-ci se forme de diverses manihres. Les feuilles decomposent les acides gras ajoutes par alpha-oxydation, les bactbries photosynthbtisantes par beta-oxydation.