title: Isolation and Characterization of Multi-Metal-Resistant Halomonas sp. MG from Tamil Nadu Magnesite Ore Soil in India.
abstract: The aim of the study was to isolate and characterize potential multi-metal-resistant bacteria from ore soils. A total of three bacteria were isolated and assayed for resistance to arsenic (As), copper (Cu), and lead (Pb). Isolate Halomonas sp. MG exhibited maximum resistance to 1000 mg Pb/L, 800 mg As/L, and 500 mg Cu/L and it was identified as Halomonas sp. based on the partial 16S rDNA sequences. The metal(loid)s resistance mechanisms were further confirmed by amplification of arsC (As) copAU (Cu), and pbrT (Pb) genes. Biological transmission electron micrographs and XRD studies showed that the isolate Halomonas sp. MG transformed and/or biomineralized the metals either intracellularly or extracellularly. These results suggest that the isolate could be used as a potential candidate for the bioremediation of As, Cu, and Pb.
authors: Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, 570-752, South Korea. gova.muthu@gmail.com.
authors: Muthusamy
authors: M
authors: Govarthanan
authors: School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, 68583-0817, USA.
authors: Jaehong
authors: J
authors: Shim
authors: Water Quality Analysis Research Center, K-water, Daejeon, 306-711, South Korea.
authors: Seol Ah
authors: SA
authors: Kim
authors: Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, 570-752, South Korea. kannan@jbnu.ac.kr.
authors: Seralathan
authors: S
authors: Kamala-Kannan
authors: Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, 570-752, South Korea. btoh@jbnu.ac.kr.
authors: Byung-Taek
authors: BT
authors: Oh
mesh_terms: D000222:Adaptation, Physiological / Q000187:drug effects; D005798:Genes, Bacterial; D020632:Halomonas / Q000145:classification / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D007194:India; D008274:Magnesium / Q000737:chemistry*; D019216:Metals, Heavy / Q000378:metabolism* / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D010802:Phylogeny; D012987:Soil / Q000737:chemistry*
chemical_list: D019216:Metals, Heavy; D012987:Soil; C005479:magnesium carbonate; D008274:Magnesium