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Photoinduced toxicity of fluoranthene on primary processes of photosynthesis in lichens

Published online by Cambridge University Press:  22 December 2006

Marie KUMMEROVÁ ,
štěpán ZEZULKA ,
Jana KRULOVÁ  and
Jan TŘÍSKA
Marie KUMMEROVÁ
Affiliation:
Department of Plant Physiology and Anatomy, Institute of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czech Republic. Email: zezulka@sci.muni.cz
štěpán ZEZULKA
Affiliation:
Department of Plant Physiology and Anatomy, Institute of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czech Republic. Email: zezulka@sci.muni.cz
Jana KRULOVÁ
Affiliation:
Department of Plant Physiology and Anatomy, Institute of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czech Republic. Email: zezulka@sci.muni.cz
Jan TŘÍSKA
Affiliation:
Unit of Environmental Chemistry—Laboratory of Analytical Chemistry, Institute of Systems Biology and Ecology, Academy of Sciences of the Czech Republic, Branišovská 31, České Budějovice 370 05, Czech Republic
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Abstract

The effect of increasing concentrations (0·01, 0·1, 1 and 5 mg l−1) of intact (FLT) and photo-modified (phFLT) fluoranthene and the duration of exposure (1, 2, 3, 5 and 7 days) on the chlorophyll fluorescence parameters (F0, FV/FM, and ΦII) of symbiotic algae in the thalli of two foliose lichens Lasallia pustulata and Umbilicaria hirsuta was investigated. In addition the FLT concentration in thalli of both lichen species was determined and a bioconcentration factor (BCF) was calculated. The results obtained demonstrated that the concentrations of FLT and especially phFLT (1 and 5 mg l−1) applied affected primary photochemical processes of photosynthesis in the algae of both lichen species. The F0 value increased and the FV/FM and ΦII values decreased. The fluoranthene content in the thallus of both lichen species increased with increasing FLT concentration in the environment.

Keywords

chlorophyll fluorescencefluoranthenelichensphoto-modification
Type
Research Article
Information
The Lichenologist , Volume 39 , Issue 1 , January 2007 , pp. 91 - 100
Copyright
© British Lichen Society 2007

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