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Secondary carotenoid accumulation in flagellates of the green alga Haematococcus lacustris

Published online by Cambridge University Press:  01 November 1997

KAY GRÜNEWALD ,
CHRISTOPH HAGEN  and
WOLFRAM BRAUNE
KAY GRÜNEWALD
Affiliation:
Institute of General Botany, Friedrich-Schiller-University Jena, Am Planetarium 1, D-07743 Jena, Germany
CHRISTOPH HAGEN
Affiliation:
Institute of General Botany, Friedrich-Schiller-University Jena, Am Planetarium 1, D-07743 Jena, Germany
WOLFRAM BRAUNE
Affiliation:
Institute of General Botany, Friedrich-Schiller-University Jena, Am Planetarium 1, D-07743 Jena, Germany
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Abstract

The combination of nitrogen deprivation and increased cultivation light intensity resulted in the synthesis of secondary carotenoids in flagellates of Haematococcus lacustris. The pigment pattern was characterized by high-pressure liquid chromatography analysis during the accumulation period and in response to inhibitors of carotenoid biosynthesis (diphenylamine, norflurazon and tetcyclacis). Diphenylamine treatment resulted in (i) a decrease in ketocarotenoids and (ii) an accumulation of β-carotene and zeaxanthin due to inhibition of the β-carotene oxygenase. Our results indicate that astaxanthin synthesis in H. lacustris follows the biosynthetic pathway elucidated in the marine bacterium Agrobacterium aurantiacum.

Keywords

astaxanthincarotenoidsHaematococcus lacustrisinhibitors of carotenoid biosynthesisketocarotenoidszeaxanthin
Type
Research Article
Information
European Journal of Phycology , Volume 32 , Issue 4 , November 1997 , pp. 387 - 392
Copyright
© 1997 British Phycological Society

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