Galloway, DJ 1993: Global environmental change: lichens and chemistry. - In: Feige, GB/Lumbsch, HT (eds.): Phytochemistry and Chemotaxonomy of Lichenized Ascomycetes - A Festschrift in Honour of Siegfried Huneck. . Bibliotheca Lichenologica, J. Cramer, Berlin, Stuttgart pp. 87-95. [RLL List # 154 / Rec.# 6287] Keywords: CORTICAL PIGMENTS/ LIGHT INTENSITY/ LIGHT SCREENING/ UV-B PROTECTION/ XANTHOPHYLL CYCLE/ XANTHOPHYLLS
Abstract: [Chemical strategies which have evolved in lichens in order to cope with high levels of light and UV radiation are discussed: (1) the xanthophyll cycle, (2) light screening by cortical pigments (3) UV-B protection compounds derived via the shikimic acid pathway.]