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STEROLS OF DICTYOCHA FIBULA (CHRYSOPHYCEAE) AND OLISTHODISCUS LUTEUS (RAPHIDOPHYCEAE) 1
Author(s) -
Patterson Glenn W.,
Valkenburg Shirley D.
Publication year - 1990
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1990.00484.x
Subject(s) - biology , sterol , botany , algae , biochemistry , cholesterol
Sterols from cultured Dictyocha fibula Ehrenberg and Olisthodiscus luteus Carter were extracted and identified for comparison with sterols from other Chromophycota species. Although orientation at C‐24 was not absolutely determined, the sterols of Dictyocha , a silicoflagellale, appeared to consist of only 24‐methyl‐22‐dehydrocholesterol and 24‐methylenecholesterol, a sterol composition not known in any other alga. This is in keeping with the taxonomic isolation Dictyocha has among algae. On the other hand, Olisthodiscus luteus contained 24‐ethylcholesterol, 24‐ethylcholestanol, 24‐methylcholesterol, and cholesterol. This composition is in accord with sterols of members of the Xanthophyceae and Raphidophyceae.