title: Variability of lipid constituents of the coil cyanobacterium Microcoleus vaginatus from the Dead Sea basin and Negev desert.
abstract: A study of lipids of the soil cyanobacterium Microcoleus vaginatus, which was isolated from microbial crusts collected in the Dead Sea basin and in the Negev desert, was performed. Twenty-six hydrocarbons and fatty acids were separated and identified by GC/MS using serially coupled capillary columns of different polarity. Changes in the lipid composition were evaluated by comparison of samples collected from different locations. Heptadecane, 1-heptadecene, 6- and 7-methylheptadecane, hexadecanoic and 9(Z)-octadecenoic acids were identified as the major constituents. Biochemical mechanisms of production of the different lipid compounds under UV irradiation are proposed.
authors.affiliation: Natural Lipids Group, The Hebrew University of Jerusalem, Jerusalem 91390, Israel. dvalery@cc.huji.ac.il
authors.forename: V M
authors.initials: VM
authors.lastname: Dembitsky
authors.forename: I
authors.initials: I
authors.lastname: Dor
authors.forename: I
authors.initials: I
authors.lastname: Shkrob
mesh_terms: D000458:Cyanobacteria / Q000737:chemistry*; D005227:Fatty Acids / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D006838:Hydrocarbons / Q000737:chemistry; D007557:Israel; D008055:Lipids / Q000032:analysis / Q000737:chemistry*; D013058:Mass Spectrometry; D012988:Soil Microbiology; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D005227:Fatty Acids; D006838:Hydrocarbons; D008055:Lipids