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Volume 69, Issue 7

Leucobacter muris sp. nov., isolated from the nose of a laboratory mouse Free

Abstract

A Gram-stain-positive, rod-shaped, aerobic, non-motile, white, opaque bacterial isolate, designated 924/12, was isolated from the nose of a laboratory mouse in Düsseldorf, Germany. The 16S rRNA gene sequence analyses indicated the phylogenetic position of the strain within the genus Leucobacter . Similarity levels over 97 % were recorded between the 16S rRNA gene sequence of strain 924/12 and the type strains of the species Leucobacter chironomi DSM 19883 (99.5 %), followed by Leucobacter celer subsp. astrifaciens CBX151 (97.6 %), Leucobacter celer subsp. celer NAL101 (97.5 %), ‘ Leucobacter kyeonggiensis ’ F3-P9 (97.5 %), Leucobacter zeae CC-MF41 (97.3 %), Leucobacter chromiiresistens JG31 (97.1 %), Leucobacter triazinivorans JW-1 (97.1 %), Leucobacter corticis 2 C-7 (97.0 %) and Leucobacter aridicolis CIP108388 (97.0 %). DNA–DNA hybridization and whole genomic comparison, mandatory to taxonomically separate strain 924/12 from the type strain of L. chironomi , revealed similarity values of 40.4 and 30.8 %, respectively, thus below the threshold of 70 % recommended differentiating between species. The cell-wall amino acids of the novel isolate were diaminobutyric acid, alanine, glycine, threonine and glutamic acid. The major fatty acids were anteiso-C15 : 0, anteiso-C17 : 0 and iso-C16 : 0. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, glycolipid and one unknown lipid, whereas the predominant menaquinones were MK-11 and MK-10. The genomic DNA G+C content of strain 924/12 was 70.6 mol%. Phylogenetic analyses based on the 16S rRNA gene sequences and the phenotypical differences between strain 924/12 and the other closely related type strains of the genus Leucobacter indicated that strain 924/12 represents a novel species within the genus Leucobacter , family Microbacteriaceae , for which the name Leucobacter muris sp. nov. is proposed. The type strain is 924/12 (=DSM 101948=CCM 8761).

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Keyword(s): laboratory mouse , Leucobacter and taxonomy
© 2019 IUMS
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2019-05-17
2024-04-19
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Leucobacter muris sp. nov., isolated from the nose of a laboratory mouse
Int J Syst Evol Microbiol 69, 2095 (2019); https://doi.org/10.1099/ijsem.0.003446
/content/journal/ijsem/10.1099/ijsem.0.003446
/content/journal/ijsem/10.1099/ijsem.0.003446
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