title: Sterols and fatty acids of three harmful algae previously assigned as Chattonella.
abstract: Sterol and fatty acid compositions were determined for three harmful algal species previously classified in the genus Chattonella (Raphidophyceae): the new genus Chloromorum toxicum (ex Chattonella cf. verruculosa), Verrucophora farcimen (Dictyochophyceae), previously Chattonella aff. verruculosa, and Verrucophora verruculosa (=Pseudochattonella verruculosa) previously Chattonella verruculosa. The major fatty acids of C. toxicum were 14:0, 16:0, 18:1n-9, 18:4n-3 and 20:5n-3, and those of the Verrucophora strains were. 14:0, 16:0, 18:0, 18:4n-3, 18:5n-3 and 22:6n-3. C. toxicum contained the 24beta-ethyl sterols, poriferasterol and clionasterol, as its major sterols. For comparison, the stereochemistry of the 24-ethyl sterols of two raphidophytes, Chattonella marina and Heterosigma akashiwo, was determined to be 24alpha and 24beta, respectively. Both Verrucophora strains contained the 27-nor sterol occelasterol as the only detected sterol. This was the first time occelasterol has been found in algae.
authors.affiliation: Department of Chemistry, SUNY-ESF, 1 Forestry Drive, Syracuse, NY 13210, USA. jlginer@syr.edu
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Giner
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Carmelo
authors.initials: C
authors.lastname: Tomas
mesh_terms: D056890:Eukaryota / Q000737:chemistry*; D005227:Fatty Acids / Q000737:chemistry*; D015394:Molecular Structure; D013261:Sterols / Q000737:chemistry*
chemical_list: D005227:Fatty Acids; D013261:Sterols