Paper Title:
Geographical Distribution and Diversity of Moderately Thermophilic Members of the Thermoplasmatales
  Abstract

Oxidation of ferrous iron by moderately thermophilic species of the genus Ferroplasma is of considerable potential value in commercial bioleaching operations. A collection of strains was enriched and isolated from a number of natural or industrial acidic sites at 45 and 55°C. Phylogenetic analysis based on 16S rRNA gene sequencing indicated that all strains were members of the Order Thermoplasmatales. Stains BH8 and BH12 showed 98% sequence similarity with Ferroplasma acidiphilum strain YT and DR1 respectively. Strains BH7 and BH10 were closely related to the moderately thermophilic species Ferroplasma cupricumulans. Strain BH9, a moderately thermophilic organotroph, was unrelated to previously described species and probably represents a novel genus. Strains BH8 and BH12 showed some unique physiological differences to the type species F. acidiphilum. Unlike F. acidiphilum, both strains were moderately thermophilic with a temperature range for strains BH8 and BH12 of 24 to 61°C and 27 to 49°C respectively. Strain BH12 grew organotrophically on Darland’s Medium containing glucose and yeast extract and chemomixotrophically on Darland’s Medium supplemented with ferrous sulphate. Moderately thermophilic species of Ferroplasma and Ferroplasma-like genera appear widely distributed geographically and possess considerable physiological and phylogenetic diversity that may benefit industrial bioleaching processes.

  Info
Periodical
Advanced Materials Research (Volumes 20-21)
Edited by
Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher
Pages
405-408
DOI
10.4028/www.scientific.net/AMR.20-21.405
Citation
R. Hawkes, G. O'Hara, P. D. Franzmann, J. J. Plumb, "Geographical Distribution and Diversity of Moderately Thermophilic Members of the Thermoplasmatales", Advanced Materials Research, Vols 20-21, pp. 405-408, Jul. 2007
Online since
July 2007
Price
US$ 28,-
Share
Authors: Yoshimasa Takayama, Y. Otsuka, Toshiya Shibayanagi, Hajime Kato, Kunio Funami
Abstract:Grain refinement and high temperature deformation in two kinds of magnesium alloys subjected to friction stir processing (FSP) have been...
55
Authors: Grzegorz Golański, Krzysztof Werner, Stanisław Mroziński
Mechanical Behavior & Fracture
Abstract:The report treats of the low cycle fatigue (LCF) behaviour of GX12CrMoVNbN9-1 (GP91) cast steel after heat treatment (1040°C/12h/oil +...
1106
Authors: Xu Dong Zhou, Xiang Ru Liu
Chapter 3: Materials Forming, Machining and Joining
Abstract:The researches of non-oriented silicon steel are mainly focused on the effect of main processing parameters on the microstructure and...
1468
Authors: Ying Huang, Ying Ming Chen
Chapter 6: Engineering Materials and Functional Materials
Abstract:Bacterial cellulose is a new pattern material produced by microorganism, because it has unique physical properties, chemical characteristics...
878