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Volume 64, Issue Pt_7

sp. nov., a bacterial endophyte of Free

Abstract

Bacterial strain L6-16 was isolated from . Cells were Gram-stain-negative, rod-shaped and motile with monopolar flagella. The phylogenetic analysis of its nearly complete 16S rRNA gene sequence revealed that strain L6-16 was a member of the genus . Its closest relative was PL-41 with a 16S rRNA gene sequence similarity value of 98.3 %. Sequence similarity analysis of the housekeeping and genes showed low levels of sequence similarity (<93.9 %) between strain L6-16 and other species of the genus . Strain L6-16 was able to grow between pH 5 and 11 (optimum 7.0) and at temperatures ranging from 20 to 41 °C (optimum 30 °C). It tolerated NaCl up to 1 % (w/v) (optimum 0.5 %). Cω7 and/or Cω6 (summed feature 8; 79.5 %) were found as predominant cellular fatty acids. The DNA G+C content of strain L6-16 was 58.1 mol% ( ). Based on low levels of DNA–DNA relatedness, strain L6-16 was distinct from members of phylogenetically related species including PL-41 (38.3±0.8 %), W3 (6.9±0.4 %) and J3-A127 (12.3±0.6 %). Strain L6-16 was unable to nodulate the roots of , and and genes were not detected. The results obtained from phylogenetic analyses, phenotypic characterization and DNA–DNA hybridization indicated that strain L6-16 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is L6-16 ( = NBRC 109339 = BCC 55143).

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Funding
This study was supported by the:
  • King Mongkut’s Institute of Technology Ladkrabang
© 2014 IUMS
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2014-07-01
2024-04-23
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Rhizobiumlemnae sp. nov., a bacterial endophyte of Lemna aequinoctialis
Int J Syst Evol Microbiol 64, 2455 (2014); https://doi.org/10.1099/ijs.0.061622-0
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