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Hokkaido University Collection of Scholarly and Academic Papers >
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Sterol composition of dinoflagellates: Different abundance and composition in heterotrophic species and resting cysts
| Title: | Sterol composition of dinoflagellates: Different abundance and composition in heterotrophic species and resting cysts |
| Authors: | Amo, Miki Browse this author | | Suzuki, Noriyuki Browse this author →KAKEN DB | | Kawamura, Hiroshi Browse this author | | Yamaguchi, Aika Browse this author | | Takano, Yoshihito Browse this author | | Horiguchi, Takeo Browse this author →KAKEN DB |
| Keywords: | 4α-methyl sterol | | autotrophic dinoflagellate | | heterotrophic dinoflagellate | | resting cyst | | motile cell |
| Issue Date: | 2010 |
| Publisher: | Geochemical Society of Japan |
| Journal Title: | Geochemical Journal |
| Volume: | 44 |
| Issue: | 3 |
| Start Page: | 225 |
| End Page: | 231 |
| Abstract: | The motile cells of the autotrophic dinoflagellates Peridinium umbonatum var. inaequale, Akashiwo sanguinea, Scrippsiella tinctoria, and Prorocentrum micans commonly contain five major sterols: cholesterol, 4-methylcholestan-3-ol, 4,24-dimethylcholestan-3-ol, dinosterol, and dinostanol. The motile cell of the heterotrophic dinoflagellate Protoperidinium crassipes contains cholesterol, 4,24-dimethylcholestan-3-ol, dinosterol, dinostanol, and 4-tetramethylcholestan-3-ol as major free sterols. The dinosterol concentrations of heterotrophic dinoflagellates are about 4-12 times higher than those of autotrophic species, suggesting that the heterotrophic dinoflagellate is an important source of dinosterol in some sediments. 4-Tetramethylcholestan-3-ol has not been reported in cultured samples of other heterotrophic dinoflagellates. The difference in 4-methyl sterol composition in heterotrophic dinoflagellates may be related to the feeds used during the culture experiment. The resting cyst of P. umbonatum var. inaequale contains 4-methylcholestan-3-ol, 4,24-dimethylcholestan-3-ol, dinosterol, dinostanol, and C31Δ^[5.22]-sterol as major free sterols. The C31Δ^[5.22]-sterol has not been reported in cultured samples of motile cells from dinoflagellates. This compound might be produced during the resting stage, and thus may serve as a potential biomarker for the resting cysts of dinoflagellates. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/49660 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 堀口 健雄
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