Versatile applications and mechanisms of genus Exiguobacterium in bioremediating heavy metals and organic pollutants: A review

IF 4.1 2区 环境科学与生态学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Min Xiao, Zhong-er Long, Xueqin Fu, Long Zou
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引用次数: 0

Abstract

Microbial remediation presents a promising and sustainable approach for combating environmental pollutants. The genus Exiguobacterium thrives in diverse habitats, including extreme environments, and effectively mitigates a wide array of pollutants through its versatile detoxification mechanisms. Notably, these bacteria are adept at removing heavy metals such as chromium, arsenic, cadmium, mercury, lead, nickel, and vanadium from both soil and water, thereby reducing their toxicity and bioavailability. Additionally, Exiguobacterium demonstrates significant capabilities in biodegrading various organic pollutants, including synthetic dyes, nitroaromatic compounds, petroleum hydrocarbons, and plastic polymers. Despite its ecological and environmental importance, article dedicated to this genus remains relatively sparse. This review aims to comprehensively summarize the application and mechanism of genus Exiguobacterium in remediating toxic heavy metals and organic pollutants. It begins with a brief description of the genus's taxonomic characteristics and ecological diversity, followed by a detailed examination of its detoxification and biodegradation mechanisms in response to pollutant stress. Furthermore, it proposes avenues for future research, including the discovery of novel functional strains, elucidation of detoxification and degradation pathways, and development of genetic editing tools to enhance practical applications in environmental remediation.

Abstract Image

Exiguobacterium 属在重金属和有机污染物生物修复中的广泛应用和机制:综述
微生物修复是应对环境污染物的一种前景广阔的可持续方法。Exiguobacterium 属在包括极端环境在内的各种栖息地中茁壮成长,并通过其多功能的解毒机制有效地减轻了各种污染物的影响。值得注意的是,这些细菌善于从土壤和水中清除铬、砷、镉、汞、铅、镍和钒等重金属,从而降低它们的毒性和生物利用率。此外,Exiguobacterium 在生物降解各种有机污染物(包括合成染料、硝基芳香族化合物、石油碳氢化合物和塑料聚合物)方面也表现出显著的能力。尽管该属具有重要的生态和环境意义,但专门研究该属的文章仍然相对较少。本综述旨在全面总结外杆菌属在修复有毒重金属和有机污染物方面的应用和机理。文章首先简要介绍了该菌属的分类学特征和生态多样性,然后详细研究了该菌属在应对污染物压力时的解毒和生物降解机制。此外,它还提出了未来的研究方向,包括发现新型功能菌株、阐明解毒和降解途径以及开发基因编辑工具,以提高在环境修复中的实际应用。
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
CiteScore
9.60
自引率
10.40%
发文量
107
审稿时长
21 days
期刊介绍: International Biodeterioration and Biodegradation publishes original research papers and reviews on the biological causes of deterioration or degradation.
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