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Koublová V, Sedlář K, Sedláček I, Musilová J, Staňková E, Králová S, Koudelková S, Krsek D, Švec P. Corynebacterium mendelii sp. nov., a novel bacterium isolated from Adélie penguin oral cavity. Int J Syst Evol Microbiol 2024; 74. [PMID: 38289223 DOI: 10.1099/ijsem.0.006244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024] Open
Abstract
The taxonomic status of strain P5891T, isolated from an Adélie penguin beak swab, was investigated. Based on the 16S rRNA gene sequence, the strain was identified as a potentially novel Corynebacterium species, with the highest sequence similarities to Corynebacterium rouxii FRC0190T (96.7 %) and Corynebacterium epidermidicanis DSM 45586T (96.6 %). The average nucleotide identity values between strain P5891T and C. rouxii FRC0190T and C. epidermidicanis DSM 45586T were 68.2 and 69.2 %, respectively. The digital DNA-DNA hybridization values between strain P5891T and C. rouxii FRC0190T and C. epidermidicanis DSM 45586T were 23.7 and 21.4 %, respectively. Phylogenetic trees based on the 16S rRNA sequence placed strain P5891T in a separate branch with Corynebacterium canis 1170T and Corynebacterium freiburgense 1045T, while a phylogenomic tree based on the Corynebacterium species core genome placed the strain next to Corynebacterium choanae 200CHT. Extensive phenotyping and genomic analyses clearly confirmed that strain P5891T represents a novel species of the genus Corynebacterium, for which the name Corynebacterium mendelii sp. nov. is proposed, with the type strain P5891T (=CCM 8862T=LMG 31627T).
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Affiliation(s)
- Vendula Koublová
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Karel Sedlář
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 12, 616 00 Brno, Czech Republic
- Department of Informatics, Ludwig-Maximilians-Universität München, Amalienstr. 17, 80333 Munich, Germany
| | - Ivo Sedláček
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Jana Musilová
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 12, 616 00 Brno, Czech Republic
| | - Eva Staňková
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Stanislava Králová
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Sylva Koudelková
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Daniel Krsek
- NRL for Diagnostic Electron Microscopy of Infectious Agents, The National Institute of Public Health, Šrobárova 49/48 100 00 Prague 10, Czech Republic
| | - Pavel Švec
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Wierenga JR, Grimwood RM, Taylor HS, Hunter S, Argilla LS, Webster T, Lim L, French R, Schultz H, Jorge F, Bostina M, Burga L, Swindells-Wallace P, Holmes EC, McInnes K, Morgan KJ, Geoghegan JL. Total infectome investigation of diphtheritic stomatitis in yellow-eyed penguins (Megadyptes antipodes) reveals a novel and abundant megrivirus. Vet Microbiol 2023; 286:109895. [PMID: 37890432 DOI: 10.1016/j.vetmic.2023.109895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/15/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023]
Abstract
First identified in 2002, diphtheritic stomatitis (DS) is a devastating disease affecting yellow-eyed penguins (Megadyptes antipodes, or hoiho in te reo Māori). The disease is associated with oral lesions in chicks and has caused significant morbidity and mortality. DS is widespread among yellow-eyed penguin chicks on mainland New Zealand yet appears to be absent from the subantarctic population. Corynebacterium spp. have previously been suspected as causative agents yet, due to inconsistent cultures and inconclusive pathogenicity, their role in DS is unclear. Herein, we used a metatranscriptomic approach to identify potential causative agents of DS by revealing the presence and abundance of all viruses, bacteria, fungi and protozoa - together, the infectome. Oral and cloacal swab samples were collected from presymptomatic, symptomatic and recovered chicks along with a control group of healthy adults. Two novel viruses from the Picornaviridae were identified, one of which - yellow-eyed penguin megrivirus - was highly abundant in chicks irrespective of health status but not detected in healthy adults. Tissue from biopsied oral lesions also tested positive for the novel megrivirus upon PCR. We found no overall clustering among bacteria, protozoa and fungi communities at the genus level across samples, although Paraclostridium bifermentans was significantly more abundant in oral microbiota of symptomatic chicks compared to other groups. The detection of a novel and highly abundant megrivirus has sparked a new line of inquiry to investigate its potential association with DS.
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Affiliation(s)
- Janelle R Wierenga
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand; Wildbase, School of Veterinary Science, Massey University, New Zealand
| | - Rebecca M Grimwood
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Harry S Taylor
- Biodiversity Group, Department of Conservation/Te Papa Atawhai, New Zealand; Diagnostic and Surveillance Services, Biosecurity New Zealand, Ministry for Primary Industries, New Zealand
| | - Stuart Hunter
- Wildbase, School of Veterinary Science, Massey University, New Zealand
| | - Lisa S Argilla
- Wildlife Hospital, Dunedin, Otago Polytechnic School of Veterinary Nursing, New Zealand
| | | | - Lauren Lim
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Rebecca French
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Hendrik Schultz
- Biodiversity Group, Department of Conservation/Te Papa Atawhai, New Zealand
| | - Fátima Jorge
- Otago Micro and Nano Imaging, University of Otago, Dunedin, New Zealand
| | - Mihnea Bostina
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Laura Burga
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | | | - Edward C Holmes
- Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Australia
| | - Kate McInnes
- Biodiversity Group, Department of Conservation/Te Papa Atawhai, New Zealand
| | - Kerri J Morgan
- Wildbase, School of Veterinary Science, Massey University, New Zealand
| | - Jemma L Geoghegan
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand; Institute of Environmental Science and Research, Wellington, New Zealand.
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