Włodarczyk Agnieszka, Stasiuk Robert, Skłodowska Aleksandra, Matlakowska Renata
Laboratory of Environmental Pollution Analysis, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
Laboratory of Environmental Pollution Analysis, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
Chemosphere. 2015 Mar;122:273-279. doi: 10.1016/j.chemosphere.2014.11.073. Epub 2014 Dec 15.
Culture experiments employing Fe-deficient medium showed that a consortium of indigenous microorganisms isolated from Kupferschiefer black shale produced a mixture of extracellular compounds containing siderophores which could form complexes with a wide range of elements and were able to mediate element mobilization from polymetallic black shale. The mobilization of a diverse array of elements including a number of essential trace elements (Co, Cu, Mn, Mo, Zn) and toxic species (As) was shown. Since the bacteria used in this study were originally obtained from a subsurface copper deposit, these results highlight the potential importance of extracellular compounds in biogeochemical cycles of elements in underground environment and their ecological significance in promoting the uptake of essential trace metals and resistance to toxic elements.
采用缺铁培养基进行的培养实验表明，从库普费尔页岩黑色页岩中分离出的一组本土微生物产生了一种含有铁载体的细胞外化合物混合物，这些铁载体能够与多种元素形成络合物，并能够介导多金属黑色页岩中元素的迁移。实验表明，包括多种必需微量元素（钴、铜、锰、钼、锌）和有毒物质（砷）在内的多种元素都发生了迁移。由于本研究中使用的细菌最初是从地下铜矿床中获得的，这些结果突出了细胞外化合物在地下环境中元素生物地球化学循环中的潜在重要性，以及它们在促进必需微量金属吸收和对有毒元素抗性方面的生态意义。
