Copper tolerance in the macrolichens Cladonia furcata and Cladina arbuscula subsp. mitis is constitutive rather than inducible

Publication year: 2011
Source: Chemosphere, In Press, Corrected Proof, Available online 14 June 2011

Martin, Bačkor , Evelin Ramóna, Péli , Ivana, Vantová

In this study we assessed the degree of copper (Cu) tolerance in two common lichen species (Cladonia furcata and Cladina arbuscula subsp. mitis) that grow on both uncontaminated substrata and the surface of waste heaps from abandoned old Cu-mines. Regardless of their locality, populations of these lichens contain identical strains of photobionts (Asterochloris clade A in C. arbuscula subsp. mitis and clade D in C. furcata). Therefore, it was expected that if there were differences in Cu toxicity or tolerance between populations, that the photobiont could not be a key element of Cu tolerance in these two lichen species. In…

 Highlights: ► Cu tolerance in two lichens growing on Cu-waste heaps and control substrata was assessed. ► Regardless of locality, populations of these lichens contained identical strains of lichen algae. ► Not significant differences in responses of populations of both species to Cu excess were found. ► We assume that tolerance to Cu is constitutive rather than inducible form.