FATTY ACID AND LIPID COMPOSITION OF THE ACIDOPHILIC GREEN ALGA CHLAMYDOMONAS SP.1 |
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| Authors: | Hidetaka Tatsuzawa Etsuko Takizawa Masayuki Wada Yoko Yamamoto |
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| Affiliation: | 1. Ebara Research Co., Ltd., Honfujisawa 4-2-1, Fujisawa-shi, Kanagawa 251, Japan;2. Faculty of Agriculture, Meiji University, 1-1-1 Higashimita, Tama-ku, Kanagawa 214, Japan |
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| Abstract: | The lipid and fatty acid compositions of Chlamydomonas sp. isolated from a volcanic acidic lake and C. reinhardtii were compared, and the effects of pH of the medium on lipid and fatty acid components of Chlamydomonas sp. were studied. The fatty acids in polar lipids from Chlamydomonas sp. were more saturated than those of C. reinhardtii. The relative percentage of triacylglycerol to the total lipid content in Chlamydomonas sp. grown in medium at pH 1 was higher than that in other cells grown at higher pH. A probable explanation might be that Chlamydomonas sp. has two low pH adaptation mechanisms. One mechanism is the saturation of fatty acids in membrane lipids to decrease membrane lipid fluidity, and the other is the accumulation of triacylglycerol, as a storage lipid, to prevent the osmotic imbalance caused by high concentrations of H2SO4. |
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| Keywords: | acidophilic algae Chlamydomonas sp. Chlamydomonas reinhardtii Chlorophyta culture conditions fatty acids lipids |
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