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- Title
Photoinduced toxicity of fluoranthene on primary processes of photosynthesis in lichens.
- Authors
Kummerová, Marie; Zezulka, Štěpán; Krulová, Jana; Tříska, Jan
- 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 Φ11) of symbiotic algae in the thalli of two fotiose 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 Φ11 values decreased. The fluoranthene content in the thallus of both lichen species increased with increasing FLT concentration in the environment.
- Subjects
CHLOROPHYLL; CHLOROPLAST pigments; LICHENS; DYE plants; PHOTOBIOLOGY
- Publication
Lichenologist, 2007, Vol 39, Issue 1, p91
- ISSN
0024-2829
- Publication type
Article
- DOI
10.1017/S0024282907006111