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Isolation and characterization of YNTC-1, a novel Alicyclobacillus sendaiensis strain

  • Jian-nan Ding (丁建南)
  • Huan He (何 环)
  • Cheng-gui Zhang (张成)
  • Yi-zun Yu (于一尊)
  • Guan-zhou(邱冠周) QiuEmail author
Article

Abstract

A heterotrophic acidothermophilic bacterial strain, YNTC-1, was isolated from an acidic hot spring in Tengchong, Yunan, China. YNTC-1 grows at pH value of 1.5–8.0 and temperature of 40–70 °C, with optimal pH and temperature at 3.0 and 55 °C, respectively. The cells of the strain are in shape of short rod, with 1.0–1.2 μm in length and 0.7–0.8 μm in diameter, and with distinct spores at both poles of each cell. The predominant fatty acids in cellular membrane of the strain are C18:1 θ7c. 16s rRNA gene analysis reveals that this strain is closely related to Alicyclobacillus sendaiensis, with over 99% sequence similarity. Based on phenotypic and genotypic analyses, YNTC-1 is identified as a member of A. sendaiensis. Considering some important morphological and biochemical differences between strain YNTC-1 and A. sendaiensis ATCC 27009T, YNTC-1 may be proposed to be a novel subspecies of A. sendaiensis. However, this viewpoint has to be confirmed by further studies. Co-bioleaching of pyrite and chalcopyrite with strain YN22, Sulfobacillus thermosulfidooxidans, shows that strain YNTC-1 has no evident influence on bioleaching rates of these two sulphide minerals.

Key words

bioleaching sulphide minerals isolation strain YNTC-1 Alicyclobacillus sendaiensis Sulfobacillus thermosulfidooxidans 

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Copyright information

© Central South University Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Jian-nan Ding (丁建南)
    • 1
    • 2
  • Huan He (何 环)
    • 1
  • Cheng-gui Zhang (张成)
    • 1
  • Yi-zun Yu (于一尊)
    • 3
  • Guan-zhou(邱冠周) Qiu
    • 1
    Email author
  1. 1.School of Resources Processing and BioengineeringCentral South UniversityChangshaChina
  2. 2.Biological Resources InstituteJiangxi Academy of SciencesNanchangChina
  3. 3.Institute of Subtropical Agriculturethe Chinese Academy of SciencesChangshaChina

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