Occurrence of gorgosterol in diatoms of the genus Delphineis |
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| Authors: | Sebastiaan W Rampen John K Volkman Sung Bum Hur Ben A Abbas Stefan Schouten Ian D Jameson Daniel G Holdsworth Jean Hee Bae Jaap S Sinninghe Damsté |
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| Institution: | 1. Department of Marine Organic Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, The Netherlands;2. CSIRO Division of Marine and Atmospheric Research, G.P.O. Box 1538, Hobart, Tasmania 7001, Australia;3. Pukyong National University, Department of Aquaculture, 599-1, Daeyeon 3-dong, Nam-gu, Busan 608-737, Republic of Korea |
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| Abstract: | The presence of the C30 sterol gorgosterol (22,23-methylene-23,24-dimethylcholest-5-en-3ß-ol) and its analogues in some marine and freshwater environments is generally associated with invertebrate animals or dinoflagellates since there have been no reports of them in other microalgal classes. Here we show that two unialgal cultures of different species of the marine diatom Delphineis contain gorgosterol in addition to sterols more commonly found in diatoms. Our findings suggest that some reports of gorgosterol in seawater and marine sediments may well have an origin, at least in part, from diatoms. |
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