title: Isolation of an exopolysaccharide-producing heavy metal-resistant Halomonas sp. MG.
abstract: An exopolysaccharide (EPS)-producing heavy metal-resistant Gram-negative bacterium was isolated from ore-contaminated soil. The selected strain was identified by 16S rDNA sequencing and designated as Halomonas sp. MG. Phylogenetic analysis of the gene sequence showed its close similarity with Halomonas sp. Field emission scanning electron microscopy analysis revealed that the EPS had a porous structure with small pores. X-ray diffractograms showed the non-crystalline nature of the EPS. Further, FTIR spectroscopic analysis revealed the presence of carboxyl, hydroxyl and amide groups corresponding to a typical EPS.
authors.affiliation: Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, 570-752, South Korea.
authors.forename: Muthusamy
authors.initials: M
authors.lastname: Govarthanan
authors.affiliation: School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, 68583-0817, USA.
authors.forename: Jaehong
authors.initials: J
authors.lastname: Shim
authors.affiliation: Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, 570-752, South Korea.
authors.forename: Loganathan
authors.initials: L
authors.lastname: Praburaman
authors.affiliation: Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, 570-752, South Korea.|Jeonbuk Regional Division, K-water, Jeonju, Jeollabuk-do, 561-330, South Korea.
authors.forename: Seol Ah
authors.initials: SA
authors.lastname: Kim
authors.affiliation: 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.forename: Byung-Taek
authors.initials: BT
authors.lastname: Oh
mesh_terms: D020632:Halomonas / Q000145:classification* / Q000187:drug effects / Q000302:isolation & purification* / Q000378:metabolism; D019216:Metals, Heavy / Q000633:toxicity; D008855:Microscopy, Electron, Scanning; D010802:Phylogeny; D011135:Polysaccharides, Bacterial / Q000378:metabolism* / Q000648:ultrastructure; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D013045:Species Specificity
chemical_list: D019216:Metals, Heavy; D011135:Polysaccharides, Bacterial; D012336:RNA, Ribosomal, 16S
keywords: Exopolysaccharide; Heavy metal; Ore; Polymer