Arsenicicoccus bolidensis gen. nov., sp. nov., a novel actinomycete isolated from contaminated lake sediment

Author:

Collins Matthew D.1,Routh Joyanto2,Saraswathy Ambujom2,Lawson Paul A.1,Schumann Peter3,Welinder-Olsson Christina4,Falsen Enevold4

Affiliation:

1. School of Food Biosciences, University of Reading, Whiteknights, Reading RG6 6AP, UK

2. Department of Geology and Geochemistry, Stockholm University, Stockholm, Sweden

3. DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Braunschweig, Germany

4. Culture Collection, Department of Clinical Bacteriology, University of Göteborg, Göteborg, Sweden

Abstract

An unknown Gram-positive, catalase-positive, facultatively anaerobic, non-spore-forming, coccus-shaped bacterium originating from sediment was characterized using phenotypic, molecular chemical and molecular phylogenetic methods. Chemical studies revealed the presence of a cell-wall murein based on ll-diaminopimelic acid (type ll-Dpm-glycine1), a complex mixture of saturated, monounsaturated and iso- and anteiso-methyl-branched, non-hydroxylated, long-chain cellular fatty acids and tetrahydrogenated menaquinones with eight isoprene units [MK-8(H4)] as the major respiratory lipoquinone. This combination of characteristics somewhat resembled members of the suborder Micrococcineae, but did not correspond to any currently described species. Comparative 16S rRNA gene sequencing confirmed that the unidentified coccus-shaped organism is a member of the Actinobacteria and represents a hitherto-unknown subline related to, albeit different from, a number of taxa including Intrasporangium, Janibacter, Terrabacter, Terracoccus and Ornithinicoccus. Based on phenotypic and phylogenetic considerations, it is proposed that the unknown bacterium originating from lake sediment be classified as a new genus and species, Arsenicicoccus bolidensis gen. nov., sp. nov. (type strain CCUG 47306T=DSM 15745T).

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

Reference18 articles.

1. Distribution of menaquinones in actinomycetes and corynebacteria;Collins;J Gen Microbiol,1977

2. Lipid composition of Arthrobacter simplex , Arthrobacter tumescens and possibly related taxa;Collins;Syst Appl Microbiol,1983

3. Menaquinone composition of some spore forming actinomycetes;Collins;Syst Appl Microbiol,1984

4. phylip – phylogeny inference package (version 3.2;Felsenstein;Cladistics,1989

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