In:
International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 73, No. 5 ( 2023-05-25)
Abstract:
Six facultative anaerobic, Gram-stain-positive, oxidase-negative, rod-shaped bacteria (strains zg-B89 T , zg-B12, zg-Y338 T , zg-Y138, zg-Y908 T and zg-Y766), were isolated from the intestinal contents of Marmota himalayana in Qinghai Province, PR China. The 16S rRNA gene sequence analysis showed that zg-B89 T showed highest similarity to Cellulomonas iranensis NBRC 101100 T (99.5 %), zg-Y338 T to Cellulomonas cellasea DSM 20118 T (98.7 %), and zg-Y908 T to Cellulomonas flavigena DSM 20109 T (99.0 %). Phylogenetic and phylogenomic analysis based on 16S rRNA gene and 881 core genes revealed that these six strains formed three separate clades in the genus Cellulomonas . Average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between these three novel species and all members of the genus Cellulomonas were below species thresholds (95–96 % for ANI and 70 % for dDDH). The DNA G+C contents of zg-B89 T , zg-Y338 T and zg-Y908 T were 73.6, 72.9 and 74.5 %, respectively. Strains zg-B89 T and zg-Y908 T had anteiso-C 15 : 0 , C 16 : 0 and anteiso-C 15 : 1 A, and zg-Y338 T had anteiso-C 15 : 0 , C 16 : 0 and iso-C 16 : 0 as the main fatty acids. All novel type strains had MK-9 (H 4 ) as the predominant respiratory quinone, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and phosphatidylinositol mannoside as the major polar lipids, and rhamnose, ribose and glucose as the cell-wall sugars. The peptidoglycan amino acids of zg-B89 T , zg-Y338 T and zg-Y908 T contained ornithine, alanine, glutamic acid and aspartic acid (except for zg-Y338 T ). Based on genotypic, phenotypic, phylogenetic and biochemical properties, the six uncharacterized strains represent three novel species in the genus Cellulomonas , for which the names Cellulomonas xiejunii sp. nov. (type strain zg-B89 T =GDMCC 1.2821 T =KCTC 49756 T ), Cellulomonas chengniuliangii sp. nov. (type strain zg-Y338 T =GDMCC 1.2829 T =KCTC 49754 T ) and Cellulomonas wangsupingiae sp. nov. (type strain zg-Y908 T =GDMCC 1.2820 T =KCTC 49755 T ) are proposed, respectively.
Type of Medium:
Online Resource
ISSN:
1466-5026
,
1466-5034
DOI:
10.1099/ijsem.0.005909
Language:
English
Publisher:
Microbiology Society
Publication Date:
2023
detail.hit.zdb_id:
215062-1
detail.hit.zdb_id:
2056611-6
SSG:
12
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