Bulletin of the Faculty of Agriculture, Shimane University

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Bulletin of the Faculty of Agriculture, Shimane University 18
1984-12-20 発行

光合成細菌Rhodopseudomonas sphaeroides Sの脂質および脂肪酸組成に与える生育温度の影響

Effect of Growth Temperature on Lipid and Fatty Acid Compositions in Photosynthetic Bacterium, Rhodopseudomonas sphaeroides S
Hirayama, Osamu
Tsunematsu, Hideaki
Hayashi, Toshizo
Okuda, Toshihiko
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Description
The lipid and fatty acid compositions were affected by growth temperature in Rhodopseudomonas sphaeroides S. The cells grown at 15℃ had lipids in higher content than those grown at 30℃and 40℃. In the former cells the highest lipid class was phosphatidylcholine. In the latter cells, mono- and diglucosyldiacylglycerol and diphosphatidylglycerol were newly produced as minor components in addition to common major lipids. The growth temperature-dependent variations of fatty acids occurred in both unsaturation and chain length. On shifting down temperature a rapid conversion of lipid and fatty acid compositions took place, but on shifting up temperature the conversion was at a slower rate and incomplete. Electron microscopic observation indicated that a variation in the cell structure could be induced with the growth temperature.