In:
International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 72, No. 6 ( 2022-06-08)
Abstract:
A Gram-reaction-positive, strictly aerobic, non-sporulating, non-motile, rod-shaped bacterium, designated YC3-14 T , was isolated from pieces of stalagmite collected in a lava cave in Jeju, Republic of Korea. Cells showed growth at 15–35 °C, pH 6.0–9.0 and with 0–3 % (w/v) NaCl. Colonies of the cells were circular, smooth, convex and cream in colour. A 16S rRNA gene-based neighbour-joining tree indicated that the organism belonged to the genus Aeromicrobium and formed a sublineage between an Aeromicrobium endophyticum–Aeromicrobium fastidiosum cluster and an Aeromicrobium yanjiei–Aeromicrobium chenweiae cluster. The highest 16S rRNA gene similarity values of strain YC3-14 T were with the type strains of A. yanjiei (99.2 %), A. endophyticum (99.1 %), A. fastidiosum (98.8 %), A. ginsengisoli (98.8 %) and A . chenweiae (98.7 %). The cell-wall peptidoglycan contained ll -diaminopimelic acid as the diagnostic diamino acid. The major menaquinone was MK-9(H 4 ). The predominant fatty acids were C 18 : 0 .10-methyl, C 18 : 1 ω 9 c and C 16 : 0 . The polar lipids comprised diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, an unidentified phospholipid and two unidentified lipids. The G+C content of the genome DNA was 69.9 mol%. These chemotaxonomic features of the isolate were typical for the genus Aeromicrobium . The genome-based phylogeny showed the same tree topology as the 16S rRNA gene phylogeny. The average nucleotide identity (≤84.5 %) and digital DNA–DNA hybridization (≤27.5 %) values supported that the isolate belongs to a novel species of the genus Aeromicrobium . On the basis of data obtained by a polyphasic approach, strain YC3-14 T (=KCTC 49469 T =NBRC 114653 T ) represents a novel species of the genus Aeromicrobium , for which the name Aeromicrobium stalagmiti sp. nov. is proposed.
Type of Medium:
Online Resource
ISSN:
1466-5026
,
1466-5034
DOI:
10.1099/ijsem.0.005412
Language:
English
Publisher:
Microbiology Society
Publication Date:
2022
detail.hit.zdb_id:
215062-1
detail.hit.zdb_id:
2056611-6
SSG:
12
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