Current Microbiology

, Volume 66, Issue 6, pp 599–605

Rhizobium halotolerans sp. nov., Isolated from Chloroethylenes Contaminated Soil

Article

DOI: 10.1007/s00284-013-0313-x

Cite this article as:
Diange, E.A. & Lee, S. Curr Microbiol (2013) 66: 599. doi:10.1007/s00284-013-0313-x

Abstract

The strain designated as AB21T was isolated from chloroethylenes contaminated soil. Cells are gram-negative, aerobic, non-spore-forming, and motile rods. Phylogenetic analysis based on 16S rRNA gene sequence showed that it belonged to the genus Rhizobium, and was closely related to Rhizobium sullae IS 123T (97.4 %), Rhizobium yanglingense SH 22623T (97.2 %), Rhizobium gallicum R 602spT (97.1 %), Rhizobium alamii GBV 016T (97.0 %), and Rhizobium monogolense USDA 1844T (97.0 %). It showed less than 97 % identity with the remaining Rhizobium species. This novel isolate grew optimally at 25–37 °C (optimum, 30 °C) and pH 6–9 (optimum, pH 8.0). It grew in the presence of 0–4 % (w/v) NaCl, tolerating a 4 % (w/v) NaCl. DNA–DNA hybridization experiment shows less than 53 % binding with closely related Rhizobium. Predominant quinone is ubiquinone (Q-10). The major fatty acids were summed feature 8 (composed of C18:1ω7c/C18:1ω6c), C19:0 cyclo ω8c, and C16:0. The G+C molar content is 62.5 mol%. Based on the polyphasic analysis, strain AB21T is referred to be a novel species of the genus Rhizobium for which the name Rhizobium halotolerans sp. nov. is proposed. The type strain is AB21T (=KEMC 224-056T = JCM 17536T).

Supplementary material

284_2013_313_MOESM1_ESM.doc (13.3 mb)
Supplementary material 1 (DOC 13664 kb)

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Division of Natural Science, Department of Bio-engineeringKyonggi UniversitySuwonRepublic of Korea
  2. 2.Division of Natural Science, Department of Life ScienceKyonggi UniversitySuwonRepublic of Korea