Publication details
Annual variation in photoacclimation and photoprotection of the photobiont in the foliose lichen <i>Xanthoria parietina<i>
| Authors | |
|---|---|
| Year of publication | 2006 |
| Type | Article in Periodical |
| Magazine / Source | Journal of Photochemistry and Photobiology B: biology |
| MU Faculty or unit | |
| Citation | |
| Field | Botany |
| Keywords | Chlorophyll fluorescence; Non-photochemical quenching; Parietin; Photoinhibition; Seasonal dynamics; Zeaxanthin |
| Description | Seasonal variation in maximal quantum yield (Fv/Fm) of photosystem (PS II), light adapted quantum yield (FiII) of PS II, non-photochemical quenching (NPQ), contents of chlorophylls, and xanthophyll cycle pigments (VAZ) was studied in Xanthoria parietina repeatedly sampled in one location in S Norway during one year. The seasonal course in the susceptibility to photoinhibition was evaluated as high light-induced changes (1800 umol photons m-2 s-1 for 24 h) in Fv/Fm, FiII, and NPQ, measured as the ability to recover prior to hight light exposures. All data show that the X. parietina photobiont acclimates to seasonal changes in solar radiation, consistent with the lichen's preference for well-lit habitats. |
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