The CasKR two-component system is required for the growth of mesophilic and psychrotolerant Bacillus cereus strains at low temperatures
The different strains of Bacillus cereus can grow at temperatures covering a very diverse range. Some B. cereus strains can grow in chilled food and consequently cause food poisoning. We have identified a new sensor/regulator mechanism involved in low-temperature B. cereus growth. Construction of a mutant of this two-component system enabled us to show that this system, called CasKR, is required for growth at the minimal temperature (Tmin). CasKR was also involved in optimal cold growth above Tmin and in cell survival below Tmin. Microscopic observation showed that CasKR plays a key role in cell shape during cold growth. Introducing the casKR genes in a ΔcasKR mutant restored its ability to grow at Tmin. Although it was first identified in the ATCC 14579 model strain, this mechanism has been conserved in most strains of the B. cereus group. We show that the role of CasKR in cold growth is similar in other B. cereus sensu lato strains with different growth temperature ranges, including psychrotolerant strains.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2014 |
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| Erschienen: |
2014 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:80 |
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| Enthalten in: |
Applied and environmental microbiology - 80(2014), 8 vom: 21. Apr., Seite 2493-503 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Diomandé, Sara Esther [VerfasserIn] |
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| Links: |
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| Themen: |
Bacterial Proteins |
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| Anmerkungen: |
Date Completed 24.11.2014 Date Revised 21.10.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1128/AEM.00090-14 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM235281832 |
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| 100 | 1 | |a Diomandé, Sara Esther |e verfasserin |4 aut | |
| 245 | 1 | 4 | |a The CasKR two-component system is required for the growth of mesophilic and psychrotolerant Bacillus cereus strains at low temperatures |
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| 500 | |a Date Revised 21.10.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The different strains of Bacillus cereus can grow at temperatures covering a very diverse range. Some B. cereus strains can grow in chilled food and consequently cause food poisoning. We have identified a new sensor/regulator mechanism involved in low-temperature B. cereus growth. Construction of a mutant of this two-component system enabled us to show that this system, called CasKR, is required for growth at the minimal temperature (Tmin). CasKR was also involved in optimal cold growth above Tmin and in cell survival below Tmin. Microscopic observation showed that CasKR plays a key role in cell shape during cold growth. Introducing the casKR genes in a ΔcasKR mutant restored its ability to grow at Tmin. Although it was first identified in the ATCC 14579 model strain, this mechanism has been conserved in most strains of the B. cereus group. We show that the role of CasKR in cold growth is similar in other B. cereus sensu lato strains with different growth temperature ranges, including psychrotolerant strains | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Bacterial Proteins |2 NLM | |
| 650 | 7 | |a Transcription Factors |2 NLM | |
| 650 | 7 | |a Protein Kinases |2 NLM | |
| 650 | 7 | |a EC 2.7.- |2 NLM | |
| 700 | 1 | |a Chamot, Stéphanie |e verfasserin |4 aut | |
| 700 | 1 | |a Antolinos, Vera |e verfasserin |4 aut | |
| 700 | 1 | |a Vasai, Florian |e verfasserin |4 aut | |
| 700 | 1 | |a Guinebretière, Marie-Hélène |e verfasserin |4 aut | |
| 700 | 1 | |a Bornard, Isabelle |e verfasserin |4 aut | |
| 700 | 1 | |a Nguyen-the, Christophe |e verfasserin |4 aut | |
| 700 | 1 | |a Broussolle, Véronique |e verfasserin |4 aut | |
| 700 | 1 | |a Brillard, Julien |e verfasserin |4 aut | |
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