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Spirosoma telluris sp. nov. and Spirosoma arboris sp. nov. isolated from soil and tree bark, respectively
Ist Teil von
International journal of systematic and evolutionary microbiology, 2020-10, Vol.70 (10), p.5355-5362
Ort / Verlag
England
Erscheinungsjahr
2020
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Two novel strains (HMF3257
and HMF4905
), isolated from freshwater and bark samples, were investigated to determine their relationships within and between species of the genus
by using a polyphasic approach. They were aerobic, Gram-stain-negative, non-motile and rod-shaped bacteria. The major fatty acids (>10%) in both strains were identified as summed feature 3 (C
7
and/or C
6
) and C
5
, while strains HMF3257
and HMF4905
contained a moderately high amount of C
and iso-C
, respectively. The predominant respiratory quinone was MK-7 for both strains. In addition to phosphatidylethanolamine and one unidentified glycolipid, the polar lipid profile of strain HMF3257
consisted of three unidentified aminophospholipids, one unidentified aminolipid and two unidentified polar lipids, and that of strain HMF4905
consisted of one unidentified aminophospholipid, two unidentified aminolipids and three unidentified polar lipids. The DNA G+C contents of strains HMF3257
and HMF4905
were 47.2 and 46.4 mol%, respectively. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains HMF3257
and HMF4905
are closely related to
15J9-8
(97.0 % sequence similarity), while sharing 97.4 % sequence similarity with each other. The average nucleotide identity value between strains HMF3257
and HMF4905
was 81.1 %, and the digital DNA-DNA hybridization value between these two strains was 24.4 %. Based on the above data, strains HMF3257
and HMF4905
represent two novel members within the genus
, for which the names
sp. nov. and
sp. nov. are proposed, respectively. The type strain of
is HMF3257
(=KCTC 62463
=NBRC 112670
) and type strain of
is HMF4905
(=KCTC 72779
=NBRC 114270
).