Metal(loid) speciation and transformation by aerobic methanotrophs

Microbiome

Thomas J. Smith¹  Tim Nichol¹  Heetasmin Singh²  Avudainayagam Subramanian³  Kamaludeen Sara Parwin³  Kumarasamy Ramasamy⁴  Deepak Kumaresan⁵  Mark R Cunningham⁵  Hui Xin Loh⁵  Paul Nicholas Williams⁵  Shamsudeen Umar Dandare⁵  Obulisamy Parthiba Karthikeyan⁶ 

[1] Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield, UK;Department of Chemistry, University of Guyana, Georgetown, Guyana;Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore, India;Faculty of Science, SRM University, Chennai, India;School of Biological Sciences & Institute for Global Food Security, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, UK;School of Biological Sciences & Institute for Global Food Security, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, UK;Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, USA;Department of Engineering Technology, College of Technology, University of Houston, Houston, TX, USA;

关键词: Methanotrophs;    Metalloenzymes;    Methanobactin;    Metal transformation and speciation;    Bioremediation;   

DOI  :  10.1186/s40168-021-01112-y

来源: Springer

【 摘 要 】

Manufacturing and resource industries are the key drivers for economic growth with a huge environmental cost (e.g. discharge of industrial effluents and post-mining substrates). Pollutants from waste streams, either organic or inorganic (e.g. heavy metals), are prone to interact with their physical environment that not only affects the ecosystem health but also the livelihood of local communities. Unlike organic pollutants, heavy metals or trace metals (e.g. chromium, mercury) are non-biodegradable, bioaccumulate through food-web interactions and are likely to have a long-term impact on ecosystem health. Microorganisms provide varied ecosystem services including climate regulation, purification of groundwater, rehabilitation of contaminated sites by detoxifying pollutants. Recent studies have highlighted the potential of methanotrophs, a group of bacteria that can use methane as a sole carbon and energy source, to transform toxic metal (loids) such as chromium, mercury and selenium. In this review, we synthesise recent advances in the role of essential metals (e.g. copper) for methanotroph activity, uptake mechanisms alongside their potential to transform toxic heavy metal (loids). Case studies are presented on chromium, selenium and mercury pollution from the tanneries, coal burning and artisanal gold mining, respectively, which are particular problems in the developing economy that we propose may be suitable for remediation by methanotrophs.6g_ZKsLH11vt1AExshJzH4Video Abstract

【 授权许可】

CC BY