ABSTRACT

The aim of the study was to examine the changes in ecophysiological parameters and accumulation of heavy metals in lichens transplanted to a shooting-range environment. Thalli of the epiphytic lichen were transplanted from an unpolluted site to a shooting range. Chlorophyll a fluorescence, thiobarbituric acid reactive substances (TBARS), and damage to cell membranes in the lichen Evernia prunastri and Ramalina farinacea thalli were determined after 3 months exposure period indoors in a shooting range. The concentrations of some heavy metals including cadmium, copper, iron, manganese, nickel, lead, antimony, and zinc were measured in lichens as indicators of the levels of air pollution in the studied environment. Thalli of the lichens transplanted to the shooting-range environment showed stress symptoms where the presence of metal pollutants produced a loss of integrity of lichen cell membranes and induced oxidative stress as evidenced by increased levels of TBARS. The response of lichens transplanted to indoors of shooting range demonstrated a significant accumulation of Pb indicating potential increased metal exposure and consequent adverse health effects.

摘要

该研究的目的是检查移植到射击场环境的地衣中生态生理参数的变化和重金属的积累。附生地衣的菌体从未受污染的地方移植到射击场。叶绿素 a 荧光、硫代巴比妥酸反应物质 (TBARS) 以及对地衣Evernia prunastri和Ramalina farinacea 中细胞膜的损伤在室内射击场暴露 3 个月后测定菌体。在地衣中测量了一些重金属的浓度，包括镉、铜、铁、锰、镍、铅、锑和锌，作为研究环境中空气污染水平的指标。移植到射击场环境的地衣菌体显示出压力症状，其中金属污染物的存在导致地衣细胞膜的完整性丧失并诱导氧化应激，TBARS 水平增加就证明了这一点。移植到射击场室内的地衣的反应表明铅的显着积累，表明金属暴露可能增加，从而对健康产生不利影响。