Department of Environmental Sciences, Vytautas Magnus University, Kaunas, Lithuania.
J Toxicol Environ Health A. 2021 Apr 3;84(7):273-278. doi: 10.1080/15287394.2020.1862006. Epub 2020 Dec 17.
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 and 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.
本研究旨在探讨移植到射击场环境后地衣的生理生态参数变化和重金属积累情况。将附生地衣的藻体从未受污染的地点移植到射击场。将藻体和藻体在室内暴露于射击场 3 个月后，测定叶绿素 a 荧光、硫代巴比妥酸反应物质（TBARS）和地衣细胞膜损伤。以镉、铜、铁、锰、镍、铅、锑和锌等一些重金属的浓度作为研究环境中空气污染水平的指标，测量地衣中的重金属浓度。移植到射击场环境的地衣藻体表现出应激症状，金属污染物的存在导致地衣细胞膜完整性丧失，并诱导氧化应激，表现为 TBARS 水平升高。移植到射击场室内的地衣的反应表明 Pb 的显著积累，表明潜在的金属暴露增加和随之而来的健康影响。
