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Taxonomic implication of sterol composition in the genus Chlorella
Author(s) -
Holden Marcia J.,
Patterson Glenn W.
Publication year - 1982
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02535106
Subject(s) - sterol , degree of unsaturation , biology , genus , composition (language) , chemotaxonomy , lipidology , clinical chemistry , biochemistry , botany , chemistry , cholesterol , chromatography , taxonomy (biology) , linguistics , philosophy
Thirty‐five isolates of the genus Chlorella were grown under standardized conditions and analyzed for sterol composition. Six different sterol synthetic patterns were found. Two patterns were characterized by nuclear unsaturation at C‐5 and one type by nuclear unsaturation at C‐7. The remaining isolates all synthesize sterols with a diunsaturated nucleus (C‐5+C‐7) with various modifications. Subtype 1 synthesizes only C 28 sterols, subtype 2 produces C 28 and C 29 sterols, and subtype 3 (1 isolate) produces C 28 sterols with nuclear unsaturation at C‐5+C‐8 in addition to the Δ 5,7 C 28 sterols seen in the first 2 subtypes. Comparison of the sterol composition of strains shared in common with taxonomic researchers showed good correlation with the taxonomic scheme of Fott and Novakova which has been confirmed by Kessler and coworkers using other biochemical markers.