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Chemotaxonomic survey of sterols and fatty acids in six marine raphidophyte algae


Marshall, JA and Nichols, PD and Hallegraeff, GM, Chemotaxonomic survey of sterols and fatty acids in six marine raphidophyte algae, Journal of Applied Phycology, 14, (4) pp. 255-265. ISSN 0921-8971 (2002) [Refereed Article]

DOI: doi:10.1023/A:1021101203543


Fatty acid and sterol profiles allowed for clear discrimination between the raphidophyte genera Chattonella, Heterosigma, Fibrocapsa and Olisthodiscus, but exhibited little differentiation for individual Chattonella species(C. marina, C. antiqua and C. subsalsa). Sterol and fatty acid profiles do not support the separation of Chattonella antiqua and C. marina as distinct species. Ecophenotypic variations in lipid profiles were also observed between Chattonella strains from different geographic locations. Sterol signatures which may be useful as chemotaxonomic markers were: the absence of C27 sterols (cholesterol and 24-dihydrozymosterol) in Heterosigma akashiwo; the presence of isofucosterol in Chattonella; and the occurrence of brassicasterol, poriferasterol and fucosterol in Olisthodiscus luteus. High levels of eicosapentaenoic acid (EPA; 17-27% of fatty acids) were present in all raphidophyte species. Lipid composition correlated more closely to recent molecular classification of raphidophytes than carotenoid pigments.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fish pests and diseases
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Control of pests, diseases and exotic species in coastal and estuarine environments
UTAS Author:Marshall, JA (Dr Judith Marshall)
UTAS Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
ID Code:25384
Year Published:2002
Web of Science® Times Cited:51
Deposited By:Plant Science
Deposited On:2002-08-01
Last Modified:2011-08-02

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