Sporulation Strategies and Potential Role of the Exosporium in Survival and Persistence of Clostridium botulinum

produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the survival, transmission, and pathogenesis of . strains are very diverse, both genetically and ecologically. Group I strains are terrestrial, mesophilic, and produc...

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Published in:International journal of molecular sciences Vol. 23; no. 2; p. 754
Main Authors: Portinha, Inês M, Douillard, François P, Korkeala, Hannu, Lindström, Miia
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 11-01-2022
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Abstract produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the survival, transmission, and pathogenesis of . strains are very diverse, both genetically and ecologically. Group I strains are terrestrial, mesophilic, and produce highly heat-resistant spores, while Group II strains can be terrestrial (type B) or aquatic (type E) and are generally psychrotrophic and produce spores of moderate heat resistance. Group III strains are either terrestrial or aquatic, mesophilic or slightly thermophilic, and the heat resistance properties of their spores are poorly characterized. Here, we analyzed the sporulation dynamics in population, spore morphology, and other spore properties of 10 strains belonging to Groups I-III. We propose two distinct sporulation strategies used by Groups I-III strains, report their spore properties, and suggest a putative role for the exosporium in conferring high heat resistance. Strains within each physiological group produced spores with similar characteristics, likely reflecting adaptation to respective environmental habitats. Our work provides new information on the spores and on the population and single-cell level strategies in the sporulation of .
AbstractList Clostridium botulinum produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the survival, transmission, and pathogenesis of C. botulinum. C. botulinum strains are very diverse, both genetically and ecologically. Group I strains are terrestrial, mesophilic, and produce highly heat-resistant spores, while Group II strains can be terrestrial (type B) or aquatic (type E) and are generally psychrotrophic and produce spores of moderate heat resistance. Group III strains are either terrestrial or aquatic, mesophilic or slightly thermophilic, and the heat resistance properties of their spores are poorly characterized. Here, we analyzed the sporulation dynamics in population, spore morphology, and other spore properties of 10 C. botulinum strains belonging to Groups I–III. We propose two distinct sporulation strategies used by C. botulinum Groups I–III strains, report their spore properties, and suggest a putative role for the exosporium in conferring high heat resistance. Strains within each physiological group produced spores with similar characteristics, likely reflecting adaptation to respective environmental habitats. Our work provides new information on the spores and on the population and single-cell level strategies in the sporulation of C. botulinum.
produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the survival, transmission, and pathogenesis of . strains are very diverse, both genetically and ecologically. Group I strains are terrestrial, mesophilic, and produce highly heat-resistant spores, while Group II strains can be terrestrial (type B) or aquatic (type E) and are generally psychrotrophic and produce spores of moderate heat resistance. Group III strains are either terrestrial or aquatic, mesophilic or slightly thermophilic, and the heat resistance properties of their spores are poorly characterized. Here, we analyzed the sporulation dynamics in population, spore morphology, and other spore properties of 10 strains belonging to Groups I-III. We propose two distinct sporulation strategies used by Groups I-III strains, report their spore properties, and suggest a putative role for the exosporium in conferring high heat resistance. Strains within each physiological group produced spores with similar characteristics, likely reflecting adaptation to respective environmental habitats. Our work provides new information on the spores and on the population and single-cell level strategies in the sporulation of .
Clostridium botulinum produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the survival, transmission, and pathogenesis of C. botulinum . C. botulinum strains are very diverse, both genetically and ecologically. Group I strains are terrestrial, mesophilic, and produce highly heat-resistant spores, while Group II strains can be terrestrial (type B) or aquatic (type E) and are generally psychrotrophic and produce spores of moderate heat resistance. Group III strains are either terrestrial or aquatic, mesophilic or slightly thermophilic, and the heat resistance properties of their spores are poorly characterized. Here, we analyzed the sporulation dynamics in population, spore morphology, and other spore properties of 10 C. botulinum strains belonging to Groups I–III. We propose two distinct sporulation strategies used by C. botulinum Groups I–III strains, report their spore properties, and suggest a putative role for the exosporium in conferring high heat resistance. Strains within each physiological group produced spores with similar characteristics, likely reflecting adaptation to respective environmental habitats. Our work provides new information on the spores and on the population and single-cell level strategies in the sporulation of C. botulinum .
Author Portinha, Inês M
Lindström, Miia
Korkeala, Hannu
Douillard, François P
AuthorAffiliation Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; ines.portinha@helsinki.fi (I.M.P.); francois.douillard@helsinki.fi (F.P.D.); hannu.korkeala@helsinki.fi (H.K.)
AuthorAffiliation_xml – name: Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; ines.portinha@helsinki.fi (I.M.P.); francois.douillard@helsinki.fi (F.P.D.); hannu.korkeala@helsinki.fi (H.K.)
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  givenname: François P
  surname: Douillard
  fullname: Douillard, François P
  organization: Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland
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  givenname: Miia
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  fullname: Lindström, Miia
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/35054941$$D View this record in MEDLINE/PubMed
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Issue 2
Keywords exosporium
Clostridium botulinum
morphology
spore
Language English
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Snippet produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the survival,...
Clostridium botulinum produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the...
Clostridium botulinum produces the botulinum neurotoxin that causes botulism, a rare but potentially lethal paralysis. Endospores play an important role in the...
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StartPage 754
SubjectTerms Botulinum toxin
Botulism
Botulism - microbiology
Cell Surface Extensions - physiology
Cell Surface Extensions - ultrastructure
Clostridium botulinum
Clostridium botulinum - physiology
Clostridium botulinum - ultrastructure
exosporium
Food contamination & poisoning
Heat resistance
Microbial Viability
morphology
Paralysis
Pathogenesis
spore
Spores
Spores, Bacterial - physiology
Spores, Bacterial - ultrastructure
Sporulation
Survival
Thermal resistance
Toxins
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Title Sporulation Strategies and Potential Role of the Exosporium in Survival and Persistence of Clostridium botulinum
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