Effects of UV-B light and temperature on primary photosynthetic processes in two lichen species from contrasting habitats
| Authors | |
|---|---|
| Year of publication | 2007 |
| Type | Article in Proceedings |
| Conference | 12th Congress of the European Society for Photobiology, September 1-6 - Programme and Book of Abstracts |
| MU Faculty or unit | |
| Citation | |
| Field | Botany |
| Keywords | secondary metabolites;lichens;UV-B; chlorophyll fluorescence;photoinhibition;photoprotection |
| Description | UV-B light (280-320 nm) is an important stress factor for all photosynthetic organisms as they are dependent on solar radiation. Lichens often occur in environments with high solar radiation and therefore with high UV-B light. One of the most efficient photoprotective mechanisms of lichens against UV-B light is a synthesis of secondary metabolites, e.g. melanins (Lobaria pulmonaria) and parietin (Xanthoria parietina). Our aim was to test the influence of different UV-B levels on primary photosynthetic processes of the two lichen species with different susceptibility to high light - X. parietina grows in open habitats, while L. pulmonaria is the shade -adapted species. |
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