细菌中的铬污染及其生物修复机制:综述
Chromium pollution and its bioremediation mechanisms in bacteria: A review.
作者信息
Pushkar Bhupendra, Sevak Pooja, Parab Sejal, Nilkanth Nikita
机构信息
Department of Biotechnology, University of Mumbai, Kalina, Santacruz (E), Mumbai, 400098, Maharashtra, India; Global Biotech Forum, Maharashtra, India.
Department of Biotechnology, University of Mumbai, Kalina, Santacruz (E), Mumbai, 400098, Maharashtra, India; Society for Innovations in Biosciences, Maharashtra, India.
出版信息
J Environ Manage. 2021 Jun 1;287:112279. doi: 10.1016/j.jenvman.2021.112279. Epub 2021 Mar 8.
Environment pollution is at its peak and is creating havoc for living beings. Industrial wastes containing toxic pollutants have contributed to a great extent in this disastrous environment pollution. Chromium (Cr/Cr) is highly toxic and one of the most common environmental pollutants because of its extensive use in industries especially tanneries. Lack of efficient treatment methods has resulted in extensive chromium pollution. Bioremediation of chromium using bacteria is very thoughtful due to its eco-friendly and cost-effective outcome. Bacteria possess numerous mechanisms such as biosorption, reduction, efflux or bioaccumulation, naturally or acquired to counter the toxicity of chromium. This review focuses on the bacterial responses against chromium toxicity and scope for their application in bioremediation. The differences and similarities between Gram negative and positive bacteria against chromium are also highlighted. Further, the knowledge gap and future prospects are also discussed in order to fill these gaps and overcome the problem associated with real-time applicability of bacterial bioremediation.
环境污染正处于高峰期,给生物带来了巨大破坏。含有有毒污染物的工业废物在这场灾难性的环境污染中起到了很大作用。铬(Cr/Cr)具有高毒性,是最常见的环境污染物之一,因为它在工业尤其是制革业中广泛使用。缺乏有效的处理方法导致了广泛的铬污染。利用细菌对铬进行生物修复是非常有意义的,因为其具有环保且经济高效的效果。细菌拥有多种机制,如生物吸附、还原、外排或生物积累,这些机制可以是天然的,也可以是后天获得的,以应对铬的毒性。本综述重点关注细菌对铬毒性的反应及其在生物修复中的应用范围。还强调了革兰氏阴性菌和阳性菌对铬的差异和相似之处。此外,还讨论了知识差距和未来前景,以便填补这些差距并克服与细菌生物修复实时适用性相关的问题。