The Lichenologist

Table of Contents - 2007 - Volume 39, Issue 01  

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Photoinduced toxicity of fluoranthene on primary processes of photosynthesis in lichens

Marie  KUMMEROVÁ a1 , Štepán  ZEZULKA a1 c1 , Jana  KRULOVÁ a1 and Jan  TRÍSKA a2
a1 Department of Plant Physiology and Anatomy, Institute of Experimental Biology, Faculty of Science, Masaryk University, Kotlárská 2, Brno 611 37, Czech Republic. Email: zezulka@sci.muni.cz
a2 Unit of Environmental Chemistry—Laboratory of Analytical Chemistry, Institute of Systems Biology and Ecology, Academy of Sciences of the Czech Republic, Branišovská 31, Ceské Budejovice 370 05, Czech Republic

Article author query
kummerova m   [PubMed][Google Scholar] 
zezulka s   [PubMed][Google Scholar] 
krulova j   [PubMed][Google Scholar] 
triska j   [PubMed][Google Scholar] 

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.

(Published Online December 22 2006)
(Accepted September 19 2006)


Key Words: chlorophyll fluorescence; fluoranthene; lichens; photo-modification.

Correspondence:
c1 Corresponding author