Abstract

We studied the accumulation and localization of metals in the foliose lichens Lobaria pulmonaria, Hypogymnia physodes, and Peltigera aphthosa, living in the impact zone of the Sredne-Timansky bauxite mine. A significant accumulation of Al (16–19 g/kg), Fe (16–20 g/kg), and Ti (0.3–0.7 g/kg) by thalli was revealed. From 29 to 82% of the total content of these metals is localized in dust particles weakly attached to the surface of the thalli. The total proportion of intra- and extracellularly bound Al, Fe, and Ti did not exceed 11%, 15–56% of these metals were found in the residual fraction. An increase in the content of Cu, Pb, Co, and Ni was detected in thalli collected in the impact area. It has been shown that the localization of metals in thalli depends both on the studied element and on the morphological and anatomical characteristics of the thalli: in L. pulmonaria, fine mineral particles were localized on the surface of the thalli; in the thalli of P. aphthosa, which do not have a lower cortex, mineral inclusions were found throughout the entire thickness of the thalli.

中文翻译：

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红矾石矿露天开采粉尘污染条件下地衣菌体中金属的富集与局域化

摘要

我们研究了生活在 Sredne-Timansky 铝土矿影响区的叶状地衣Lobaria pulmonaria、Hypogymnia physodes和Peltigera aphthosa中金属的积累和定位。菌体显着积累了 Al (16–19 g/kg)、Fe (16–20 g/kg) 和 Ti (0.3–0.7 g/kg)。这些金属总含量的 29% 至 82% 集中在微弱附着于菌体表面的灰尘颗粒中。细胞内和细胞外结合的 Al、Fe 和 Ti 的总比例不超过 11%，这些金属的 15-56% 存在于残余部分中。在撞击区域收集的菌体中检测到铜、铅、钴和镍的含量增加。研究表明，金属在菌体中的定位既取决于所研究的元素，也取决于菌体的形态和解剖特征：在肺叶草中，细小的矿物颗粒位于菌体表面；在口疮假单胞菌的菌体中，没有下层皮层，在菌体的整个厚度中都发现了矿物质内含物。