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Microbiology

, Volume 79, Issue 4, pp 483–490 | Cite as

Ancylobacter abiegnus sp. nov., an oligotrophic member of the xylotrophic mycobacterial community

  • M. V. Zaichikova
  • Yu. Yu. Berestovskaya
  • V. N. Akimov
  • A. K. Kizilova
  • L. V. Vasilieva
Experimental Articles

Abstract

A new species of the genus Ancylobacter, exemplified by strain Z-0056, was isolated from dystrophic humified waters formed by xylotrophic fungi grown on decaying spruce wood. The cells of strain Z-0056 (0.65–0.9 μm) are coccoid, gram-negative, with fimbriae, and nonmotile. The strain is pleomorphic and reproduces by nonuniform division. Strain Z-0056 is an aerobic organoheterotroph and a mesophilic and moderately acidophilic oligotrophic microorganism. As an inhabitant of dystrophic ultrafresh waters, strain Z-0056 is sensitive to NaCl. The bacterium utilizes organic acids (acetate, pyruvate, oxalate, gluconate, malate, succinate, and citrate), as well as xylose and xylan. The microorganism grows in a pH range of 4.0–8.0, with an optimum at pH 5.5. The temperature range for growth is 15–25°C, with an optimum at 20°C. According to its ecophysiological properties, strain Z-0056 belongs to the group of ombrophilic dissipotrophs. The DNA G+C base content is 66.8 mol %. According to phylogenetic analysis, strain Z-0056 belongs to the genus Ancylobacter. Strain Z-0056 showed the highest similarity (98.3%) with the type strain of the species A. oerskovii. The phenotypic and phylogenetic properties of strain Z-0056 support classification of this microorganism within the genus Ancylobacter as the novel species Ancylobacter abiegnus sp. nov.

Key words

xylotrophic community oligotrophic bacteria dissipotrophs acidotrophic microorganisms ombrophils wood decomposition oligotrophic waters 

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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • M. V. Zaichikova
    • 1
  • Yu. Yu. Berestovskaya
    • 1
  • V. N. Akimov
    • 2
  • A. K. Kizilova
    • 1
  • L. V. Vasilieva
    • 1
  1. 1.Winogradsky Institute of MicrobiologyRussian Academy of SciencesMoscowRussia
  2. 2.Skryabin Institute of Biochemistry and Physiology of MicroorganismsRussian Academy of SciencesPushchino, Moscow oblastRussia

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