Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.

Within a group of three captive lowland tapirs (Tapirus terrestris) suffering from clinically apparent mycobacteriosis, non-tuberculous Mycobacterium avium subsp. hominissuis (MAH) strains were isolated from the animals and the tapir's enclosure. Based on MIRU-VNTR findings, which identified tw...

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Main Authors: Hanka Brangsch, Sandra Marcordes, Anne Busch, Michael Weber, Silver A Wolf, Torsten Semmler, Dirk Höper, Sten Calvelage, Jörg Linde, Stefanie A Barth
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0320499
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author Hanka Brangsch
Sandra Marcordes
Anne Busch
Michael Weber
Silver A Wolf
Torsten Semmler
Dirk Höper
Sten Calvelage
Jörg Linde
Stefanie A Barth
author_facet Hanka Brangsch
Sandra Marcordes
Anne Busch
Michael Weber
Silver A Wolf
Torsten Semmler
Dirk Höper
Sten Calvelage
Jörg Linde
Stefanie A Barth
author_sort Hanka Brangsch
collection DOAJ
description Within a group of three captive lowland tapirs (Tapirus terrestris) suffering from clinically apparent mycobacteriosis, non-tuberculous Mycobacterium avium subsp. hominissuis (MAH) strains were isolated from the animals and the tapir's enclosure. Based on MIRU-VNTR findings, which identified two closely related INMV profiles (124 and 246), a micro-evolutionary event was assumed, and four available MAH strains were submitted to whole genome sequencing (short- and long-read technologies). Surprisingly, the differences based on single nucleotide polymorphisms (SNPs) were exceptionally high between the four strains, i.e., between 841 and 11,166 bases, due to a strong impact of homologous recombination. Thus, an ad hoc core genome multilocus sequence typing (cgMLST) scheme was created and pangenome analysis was conducted for determining the genomic similarity between the strains. The INMV246 isolate obtained from sputum on the enclosure floor and one INMV124 isolate of tapir #2 showed the highest congruence, suggesting that both originated from a shared source. The other two INMV124 isolates were genomically distinct from these strains. Nevertheless, in all four strains two plasmids were detected, which were highly conserved between the strains. The study showed that the genomic variability between MAH strains isolated from the same site within a short period of time can be exceptionally high and the influence of homologous recombination needs to be considered when determining MAH strain relationships, particularly via SNP analyses.
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spelling doaj-art-2c02dc7f876d4bf08886e012ff5049f02025-08-20T02:08:26ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01204e032049910.1371/journal.pone.0320499Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.Hanka BrangschSandra MarcordesAnne BuschMichael WeberSilver A WolfTorsten SemmlerDirk HöperSten CalvelageJörg LindeStefanie A BarthWithin a group of three captive lowland tapirs (Tapirus terrestris) suffering from clinically apparent mycobacteriosis, non-tuberculous Mycobacterium avium subsp. hominissuis (MAH) strains were isolated from the animals and the tapir's enclosure. Based on MIRU-VNTR findings, which identified two closely related INMV profiles (124 and 246), a micro-evolutionary event was assumed, and four available MAH strains were submitted to whole genome sequencing (short- and long-read technologies). Surprisingly, the differences based on single nucleotide polymorphisms (SNPs) were exceptionally high between the four strains, i.e., between 841 and 11,166 bases, due to a strong impact of homologous recombination. Thus, an ad hoc core genome multilocus sequence typing (cgMLST) scheme was created and pangenome analysis was conducted for determining the genomic similarity between the strains. The INMV246 isolate obtained from sputum on the enclosure floor and one INMV124 isolate of tapir #2 showed the highest congruence, suggesting that both originated from a shared source. The other two INMV124 isolates were genomically distinct from these strains. Nevertheless, in all four strains two plasmids were detected, which were highly conserved between the strains. The study showed that the genomic variability between MAH strains isolated from the same site within a short period of time can be exceptionally high and the influence of homologous recombination needs to be considered when determining MAH strain relationships, particularly via SNP analyses.https://doi.org/10.1371/journal.pone.0320499
spellingShingle Hanka Brangsch
Sandra Marcordes
Anne Busch
Michael Weber
Silver A Wolf
Torsten Semmler
Dirk Höper
Sten Calvelage
Jörg Linde
Stefanie A Barth
Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.
PLoS ONE
title Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.
title_full Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.
title_fullStr Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.
title_full_unstemmed Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.
title_short Comparative genomics of Mycobacterium avium subsp. hominissuis strains within a group of captive lowland tapirs.
title_sort comparative genomics of mycobacterium avium subsp hominissuis strains within a group of captive lowland tapirs
url https://doi.org/10.1371/journal.pone.0320499
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