title: [The marine diatom Chaetoceros simplex calcitrans Paulsen and its environment. Effects of light and ultraviolet irradiation on the biosynthesis of fatty acids].
abstract: In continuous light (24/24 h) or with a 12/24 h photophase, the title diatom synthesizes the same total amount of fatty acids. But the photophase considerably increases some of them: C 18:2 (+535%), C 17:2 (+422%), C 17:0 (+97%), C 19:0 (+97%), C 17:1 (+72%). Adding ultraviolet irradiations to the two mentioned conditions of light also increases the total amount of fatty acids and induces the biosynthesis of the C 20:0. The results are discussed.
mesh_terms: D000818:Animals; D004777:Environment; D056890:Eukaryota / Q000378:metabolism / Q000528:radiation effects*; D005227:Fatty Acids / Q000096:biosynthesis*; D008027:Light; D011830:Radiation Effects; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D005227:Fatty Acids
vernacular_title: La diatomée marine Chaetoceros simplex calcitrans Paulsen et son environnement. Effets de la lumière et des irradiations ultraviolettes sur la biosynthèse des acides gras