Naziębło Aleksandra, Dobrzyński Jakub
Institute of Technology and Life Sciences - State Research Institute, Raszyn, Poland.
Biodegradation. 2025 Jul 15;36(4):60. doi: 10.1007/s10532-025-10157-x.
Heavy metals are among the key environmental contaminants which pose a threat to all the living organisms. Bacteria can help detoxify these elements by a range of mechanisms associated to bacterial metabolic processes. One of them is biotransformation, which consists in change in the oxidative state of an element, often followed by its absorption or precipitation. Pseudomonadota-a vast and diverse bacterial phylum-belong to the best studied microorganisms involved in the process. Our review shows their contribution to the redox-based detoxification of four trace elements: chromium, manganese, mercury, and arsenic. Based on a comprehensive literature survey, we try to assess the importance of individual orders and selected genera in redox transformations; we also identify potential risks associated with the use of Pseudomonadota in bioremediation and suggest the most promising directions for future studies and applications. The review leads to a conclusion that the potential of non-pathogenic rhizobia Hyphomicrobiales is particularly worth further exploration.
重金属是对所有生物构成威胁的关键环境污染物之一。细菌可以通过一系列与细菌代谢过程相关的机制帮助这些元素解毒。其中之一是生物转化，它包括元素氧化态的变化，通常随后是其吸收或沉淀。假单胞菌门——一个庞大而多样的细菌门——属于参与该过程研究得最好的微生物。我们的综述展示了它们对四种微量元素（铬、锰、汞和砷）基于氧化还原的解毒作用。基于全面的文献调查，我们试图评估各个目和选定属在氧化还原转化中的重要性；我们还确定了在生物修复中使用假单胞菌门相关的潜在风险，并提出未来研究和应用最有前景的方向。该综述得出的结论是，非致病性根瘤菌目（Hyphomicrobiales）的潜力特别值得进一步探索。
