A systematic understanding of microbial reductive dechlorination towards an improved “one health” soil bioremediation: A review and perspective

IF 4.4 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Yan He, ShuYao Li, Jing Yuan, Jie Cheng, JiBo Dou, XueLing Yang, JianMing Xu
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Abstract

Chlorinated organic pollutants (COPs), both emerging and traditional, are typical persistent pollutants that harm soil health worldwide. Dechlorinators mediated reductive dechlorination is the optimal way to completely remove COPs from anaerobic soil through a redox reaction driven by electron transfer during microbial anaerobic respiration. Generally, the dechlorinated depletion of COPs in situ often interacts with multiple element biogeochemical activities, e.g., methanogenesis, sulfate reduction, iron reduction, and denitrification. Elucidating the relevance of biogeochemical cycles between COPs and multiple elements and the coupled mechanisms involved, thus, helps to develop effective pollution control strategies with the balance between pollution degradation and element cycles in heterogeneous soil, ultimately contributing to “one health” goal. In this review, we summarized the microbial-chemical coupling redox processes and the driving factors, elucidated the interspecies metabolites exchange and electron transfer mechanisms within COP-dechlorinating communities, and further proposed a detailed design, construction, and analysis framework of engineering COP-dechlorinating microbiomes via “top-down” self-assembly and “bottom-up” synthesis to pave the way from laboratory to practical field application. Especially, we delve into the major challenges and perspectives surrounding the design of state-of-the-art synthetic microbial communities. Our goal is to improve the understanding of the microbial-mediated coupling between reductive dechlorination and element biogeochemical cycling, with a particular focus on the implications for health-integrated soil bioremediation under the “one health” concept.

系统了解微生物的还原脱氯作用,以改善 "一体健康 "的土壤生物修复:回顾与展望
新出现的和传统的氯化有机污染物(COPs)是危害全球土壤健康的典型持久性污染物。脱氯剂介导的还原脱氯反应是通过微生物厌氧呼吸过程中电子传递驱动的氧化还原反应彻底清除厌氧土壤中 COPs 的最佳方法。一般来说,COPs 的原位脱氯通常与多种元素的生物地球化学活动(如甲烷生成、硫酸盐还原、铁还原和反硝化)相互影响。因此,阐明 COPs 与多种元素之间生物地球化学循环的相关性及其耦合机制,有助于制定有效的污染控制策略,平衡异质土壤中的污染降解与元素循环,最终实现 "同一健康 "目标。在这篇综述中,我们总结了微生物-化学耦合氧化还原过程及其驱动因素,阐明了 COP 除氯群落中种间代谢物交换和电子传递机制,并进一步提出了通过 "自上而下 "自组装和 "自下而上 "合成的 COP 除氯微生物组工程的详细设计、构建和分析框架,为从实验室到实际现场应用铺平了道路。特别是,我们深入探讨了设计最先进的合成微生物群落所面临的主要挑战和前景。我们的目标是加深对微生物介导的还原脱氯与元素生物地球化学循环之间耦合关系的理解,尤其关注 "同一健康 "理念下健康综合土壤生物修复的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Science China Technological Sciences
Science China Technological Sciences ENGINEERING, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
8.40
自引率
10.90%
发文量
4380
审稿时长
3.3 months
期刊介绍: Science China Technological Sciences, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Technological Sciences is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Reviews summarize representative results and achievements in a particular topic or an area, comment on the current state of research, and advise on the research directions. The author’s own opinion and related discussion is requested. Research papers report on important original results in all areas of technological sciences. Brief reports present short reports in a timely manner of the latest important results.
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