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Secondary chemistry of cultured mycobionts: formation of a complete chemosyndrome by the lichen fungus of Lobaria spathulata

Published online by Cambridge University Press:  28 March 2007

Elfie Stocker-Wörgötter  and
John A. Elix
Elfie Stocker-Wörgötter
Affiliation:
Elfie Stocker-Wörgötter: Institute of Plant Physiology, University of Salzburg, Hellbrunner Str. 34, A-5020 Salzburg, Austria.
John A. Elix
Affiliation:
John A. Elix: Department of Chemistry, The Faculties, Australian National University, Canberra, A.C.T. 0200, Australia.
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Abstract

The study aimed to optimize culture conditions and nutrient requirements for theproduction of secondary metabolites by the cultured mycobiont Lobaria spathulata. This species proved to be an excellent model system for such studies, as the complete chemosyndromefound in the natural lichen thallus was repeatedly formed in the cultured mycobiont with differentiated, aerial mycelia. Nutrient media containing the disaccharide, sucrose, were found to favour both rapid growth and the production of typical lichen substances. Higher proportions of the secondary compounds were detected in the developing mycobiont than in mature lichen thalli.

Keywords

axenic culturecultured mycobiontsgyrophoric acid chemosyndromeLobaria spathulata
Type
Research Article
Information
The Lichenologist , Volume 34 , Issue 4 , July 2002 , pp. 351 - 359
Copyright
Copyright © British Lichen Society 2002

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