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Published on: June 14, 2024
Herbidospora galbida sp. nov., a novel actinobacterium isolated from soil
Liyuan Han1, Mingying Yu1, Junwei Zhao1
1Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China.
Abstract:
A novel actinobacterium, designated strain NEAU-GS14T, was isolated from soil of a flower bed in a residential area in Sanya, Hainan Province, China, and characterized using a polyphasic approach. Morphological and chemotaxonomic characteristics of the strain coincided with members of the genus Herbidospora. The 16S rRNA gene sequence analysis showed that strain NEAU-GS14T belongs to the genus Herbidospora and was most closely related to Herbidospora daliensis JCM 18061T (98.8 %), other type strains of species of the genus Herbidospora were found to be less than 98.7 %. Phylogenetic analysis using the 16S rRNA gene sequences showed that the strain formed a cluster with Herbidospora daliensis JCM 18061T. Cell wall contained meso-diaminopimelic acid as the major diamino acid and the whole-cell hydrolysates were glucose, madurose and ribose. The major polar lipids were diphosphatidylglycerol, hydroxyphosphatidylethanolamine, phosphatidylethanolamine, phosphatidylmethylethanolamine, phosphoglycolipids and two phosphatidylinositol mannosides. The predominant menaquinone was MK-10(H4). Major fatty acids were 10-methly C17 : 0 and C17 : 0, these chemotaxonomic data supported the affiliation of strain NEAU-GS14T to the genus Herbidospora. The DNA G+C content was 70.6 mol%. Furthermore, the strain could be clearly distinguished by digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) values and some phenotypic characteristics. Therefore, it is proposed that strain NEAU-GS14T represents a novel species of the genus Herbidospora, for which the name Herbidospora galbida sp. nov. is proposed. The type strain is NEAU-GS14T (=CCTCC AA 2018040T=JCM 33459T).
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