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Abe Y, Fukushima K, Matsumoto Y, Niitsu T, Nabeshima H, Nagahama Y, Akiba E, Haduki K, Saito H, Nitta T, Kawano A, Tanaka M, Matsuki T, Motooka D, Tsujino K, Miki K, Nakamura S, Iida T, Kida H. Mycobacterium senriense sp. nov., a slowly growing, non-scotochromogenic species, isolated from sputum of an elderly man. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005378] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A slowly growing mycobacteria, identified as strain TY59T, was isolated from sputum of an elderly man with pneumonia. Sequencing of the 16S rRNA gene indicated that this strain was similar to members of the
Mycobacterium avium
complex and closely related species. Strain TY59T has highest 16S rRNA gene sequence similarities to the type strains of
Mycobacterium colombiense
(99.80 % sequence similarity),
Mycobacterium vulneris
(99.74 %),
Mycobacterium timonense
(99.54 %),
Mycobacterium avium
subsp.
avium
(99.54 %) and
Mycobacterium avium
subsp.
silvaticum
(99.54 %). Analysis of the internal transcribed spacer (ITS) and DNA-directed RNA polymerase subunit beta (rpoB) sequences gave similar results to the 16S rRNA gene analysis. The closest species to strain TY59T were
M. colombiense
and
M. vulneris
with 97.90–98.25 % identity in ITS and 96.4–96.6 % in rpoB. The strain's 65 kDa heat shock protein (hsp65) gene was different from those of
M. vulneris
,
M. colombiense
and
M. avium
subsp.
silvaticum
with 72.4–74.2 % identity. Average nucleotide identity results showed a 93.4 % match to
M. vulneris
as the maximum value. Phenotypically, the non-chromogenicity, rough colonies, growth at 42 °C, negative results for nitrate reduction, β-glucosidase and Tween 80 hydrolysis, and positive results for catalase activity set this strain apart from closely related species. We propose that Mycobacterium senriense sp. nov. is a novel species of slowly growing mycobacteria. The type strain is TY59T (RIMD 1371001T=CIP 111917T).
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Affiliation(s)
- Yuko Abe
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, Japan
| | - Kiyoharu Fukushima
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
- Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, Japan
| | - Yuki Matsumoto
- Department of Infection Metagenomics, Genome Information Research Center, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Takayuki Niitsu
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, Japan
| | - Hiroshi Nabeshima
- Fujii Memorial Research Institute, Otsuka Pharmaceutical Company, Ltd., 520-0106 Shiga, Japan
- Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Yasuharu Nagahama
- Fujii Memorial Research Institute, Otsuka Pharmaceutical Company, Ltd., 520-0106 Shiga, Japan
- Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Eri Akiba
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Kako Haduki
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Haruko Saito
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Tadayoshi Nitta
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Akira Kawano
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Michio Tanaka
- Pathogenic Microbes Repository Unit, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Takanori Matsuki
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Genome Information Research Center, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Kazuyuki Tsujino
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Keisuke Miki
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
| | - Shota Nakamura
- Department of Infection Metagenomics, Genome Information Research Center, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Tetsuya Iida
- Pathogenic Microbes Repository Unit, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Hiroshi Kida
- Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, 5-1-1 Toneyama Toyonaka, Osaka, Japan
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