Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil.
Army Chemical and Pharmaceutical Laboratory, Ministry of Defense, Brasília, Brazil.
Braz J Microbiol. 2024 Jun;55(2):1405-1414. doi: 10.1007/s42770-024-01331-z. Epub 2024 Apr 10.
Corynebacterium spp. are widely disseminated in the environment, and they are part of the skin and mucosal microbiota of animals and humans. Reports of human infections by Corynebacterium spp. have increased considerably in recent years and the appearance of multidrug resistant isolates around the world has drawn attention.
To describe a new species of Corynebacterium from human tissue bone is described after being misidentified using available methods.
For taxonomic analyses, phylogenetic analysis of 16S rRNA and rpoB genes, in silico DNA-DNA hybridization, average nucleotide and amino acid identity, multilocus sequence analysis, and phylogenetic analysis based on the complete genome were used.
Genomic taxonomic analyzes revealed values of in silico DNA-DNA hybridization, average nucleotide and amino acids identity below the values necessary for species characterization between the analyzed isolates and the closest phylogenetic relative Corynebacterium aurimucosum DSM 44532.
Genomic taxonomic analyzes indicate that the isolates analyzed comprise a new species of the Corynebacterium genus, which we propose to name Corynebacterium hiratae sp. nov. with isolate 332 (= CBAS 826 = CCBH 35,014) as the type strain.
棒状杆菌属广泛分布于环境中,是动物和人类皮肤和黏膜微生物群的一部分。近年来,人类感染棒状杆菌属的报道显著增加,而世界各地出现的多药耐药分离株引起了关注。
在用现有方法鉴定错误后,描述一种来自人组织骨的新型棒状杆菌。
为了进行分类分析,我们使用了 16S rRNA 和 rpoB 基因的系统发育分析、计算机 DNA-DNA 杂交、平均核苷酸和氨基酸同一性、多位点序列分析以及基于全基因组的系统发育分析。
基因组分类分析显示,分析的分离株与最接近的系统发育相关的棒状杆菌属物种 Corynebacterium aurimucosum DSM 44532 之间的计算机 DNA-DNA 杂交、平均核苷酸和氨基酸同一性值低于物种特征所需的值。
基因组分类分析表明,分析的分离株包含棒状杆菌属的一个新种,我们建议将其命名为 Hiratae 棒状杆菌新种,以 332 号分离株(=CBAS 826=CCBH 35,014)为模式株。