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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 71, Issue 7

sp. nov., isolated from a cave, and proposals that is a later synonym of , and are later synonyms of , and and are later synonyms of No Access

Abstract

Two novel actinobacterial strains, designated C9-5 and C3-43, were isolated from soil samples of a cave in Jeju Island, Republic of Korea, and subjected to taxonomic study by a polyphasic approach. The organisms exhibited a typical rod–coccus developmental cycle during growth and grew at 10–30 °C, pH 5–9 and 0–3 % (w/v) NaCl. In 92 single-copy core gene sequence analysis, strain C9-5 was loosely associated with , albeit sharing low 16S rRNA gene sequence similarity (97.4 %). A combination of morphological and chemotaxonomic characteristics supported assignment with the genus . With respect to 16S rRNA gene sequence similarity, the novel isolates showed the highest identity to the type strain of (98.7 % sequence similarity), followed by (98.5 %) and (98.4 %).The average nucleotide identity and digital DNA–DNA hybridization values between strain C9-5 and members of the genus were ≤81.5 and ≤37.1 %, respectively. A set of physiological and chemotaxonomic properties together with overall genomic relatedness differentiated the novel isolates from members of the genus , for which the name sp. nov. is proposed. The type strain is C9-5 (=KACC 19822=DSM 107558). Based on genome analysis performed here, it is also proposed that Su . 2015 is a later heterotypic synonym of Yoon . 2000, Xu . 2007 and Li . 2004 are later heterotypic synonyms of (Gray and Thornton 1928) Goodfellow and Alderson 1979 (Approved Lists 1980), and Briglia . 1996 and Ghosh . 2006 are later heterotypic synonyms of Klatte . 1995.

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Keyword(s): International Code of Nomenclature of Bacteria , later heterotypic synonym , natural cave , Rhdococcus spelaei and Rule 42
© 2021 The Authors
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2021-07-15
2024-04-20
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Rhodococcus spelaei sp. nov., isolated from a cave, and proposals that Rhodococcus biphenylivorans is a later synonym of Rhodococcus pyridinivorans, Rhodococcus qingshengii and Rhodococcus baikonurensis are later synonyms of Rhodococcus erythropolis, and Rhodococcus percolatus and Rhodococcus imtechensis are later synonyms of Rhodococcus opacus
Int J Syst Evol Microbiol 71, 004890 (2021); https://doi.org/10.1099/ijsem.0.004890
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