Photoprotective mechanisms in foliose lichens have sufficient capacity to cope with a short-term high light stress

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Authors

BARTÁK Miloš VRÁBLÍKOVÁ Hana VÁCZI Peter HÁJEK Josef ŠTEPIGOVÁ Jana ILÍK Petr

Year of publication 2005
Type Article in Proceedings
Conference XVII International Botanical Congress - Abstracts
MU Faculty or unit

Faculty of Science

Citation
Web XVIIth International Botanical Congress
Field Botany
Keywords botany lichens photoinhibition glutatahione zeaxanthin photosystem
Description Several photoprotective mechanisms were measured on foliose lichens Lasallia pustulata and Umbilicaria antarctica: alteration in PS II functioning (fast chlorophyll fluorescence transient), formation of zeaxanthin, and changes in amount and redox state of glutathione as related to a short-term high light stress. The high light-induced photoinhibition was sensed by a set of chlorophyll fluorescence parameters (Fv/Fm, Yield PS II, and NPQ).
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