Saharan Baljeet Singh, Chaudhary Twinkle, Mandal Balwan Singh, Kumar Dharmender, Kumar Ravinder, Sadh Pardeep Kumar, Duhan Joginder Singh
Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, India.
Department of Animal Biotechnology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar 125004, India.
J Xenobiot. 2023 Jun 1;13(2):252-269. doi: 10.3390/jox13020019.
In the age of industrialization, numerous non-biodegradable pollutants like plastics, HMs, polychlorinated biphenyls, and various agrochemicals are a serious concern. These harmful toxic compounds pose a serious threat to food security because they enter the food chain through agricultural land and water. Physical and chemical techniques are used to remove HMs from contaminated soil. Microbial-metal interaction, a novel but underutilized strategy, might be used to lessen the stress caused by metals on plants. For reclaiming areas with high levels of heavy metal contamination, bioremediation is effective and environmentally friendly. In this study, the mechanism of action of endophytic bacteria that promote plant growth and survival in polluted soils-known as heavy metal-tolerant plant growth-promoting (HMT-PGP) microorganisms-and their function in the control of plant metal stress are examined. Numerous bacterial species, such as Arthrobacter, Bacillus, Burkholderia, Pseudomonas, and Stenotrophomonas, as well as a few fungi, such as Mucor, Talaromyces, Trichoderma, and Archaea, such as Natrialba and Haloferax, have also been identified as potent bioresources for biological clean-up. In this study, we additionally emphasize the role of plant growth-promoting bacteria (PGPB) in supporting the economical and environmentally friendly bioremediation of heavy hazardous metals. This study also emphasizes future potential and constraints, integrated metabolomics approaches, and the use of nanoparticles in microbial bioremediation for HMs.
在工业化时代，众多不可生物降解的污染物，如塑料、重金属、多氯联苯和各种农用化学品，令人严重关切。这些有害的有毒化合物对食品安全构成严重威胁，因为它们通过农田和水体进入食物链。物理和化学技术被用于从受污染土壤中去除重金属。微生物与金属的相互作用是一种新颖但未得到充分利用的策略，或许可用于减轻金属对植物造成的压力。对于重金属污染严重地区的修复，生物修复既有效又环保。在本研究中，对在污染土壤中促进植物生长和存活的内生细菌（即耐重金属促植物生长（HMT - PGP）微生物）的作用机制及其在控制植物金属胁迫方面的功能进行了研究。许多细菌种类，如节杆菌属、芽孢杆菌属、伯克霍尔德菌属、假单胞菌属和嗜麦芽窄食单胞菌属，以及一些真菌，如毛霉属、嗜热栖热菌属、木霉属，还有古菌，如嗜盐嗜碱菌属和嗜盐菌属，也已被确定为生物净化的有力生物资源。在本研究中，我们还强调了促植物生长细菌（PGPB）在支持对重金属危险物质进行经济且环保的生物修复方面的作用。本研究还强调了未来的潜力和限制、综合代谢组学方法以及纳米颗粒在微生物对重金属生物修复中的应用。
