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Duqué B, Rezé S, Rossero A, Membré JM, Guillou S, Haddad N. Quantification of Campylobacter jejuni gene expression after successive stresses mimicking poultry slaughtering steps. Food Microbiol 2021; 98:103795. [PMID: 33875223 DOI: 10.1016/j.fm.2021.103795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/05/2021] [Accepted: 03/23/2021] [Indexed: 12/31/2022]
Abstract
Broiler meat is considered as the most important source of the foodborne pathogen Campylobacter jejuni. Exposure to stress conditions encountered during the slaughtering process may induce bacterial adaptation mechanisms, and enhance or decrease pathogen resistance to subsequent stress. This adaptation may result from changes in bacterial gene expression. This study aims to accurately quantify the expression of selected C. jejuni genes after stresses inspired from the poultry slaughtering process. RT-qPCR was used to quantify gene expression of 44 genes in three strains after successive heat and cold stresses. Main results indicated that 26 genes out of 44 were differentially expressed following the successive thermal stresses. Three clusters of genes were differentially expressed according to the strain and the stress condition. Up-regulated genes mainly included genes involved in the heat shock response, whereas down-regulated genes belonged to metabolic pathways (such as lipid, amino-acid metabolisms). However, four genes were similarly overexpressed in the three strains; they might represent indicators of the thermal stress response at the species scale. Advances in the molecular understanding of the stress response of pathogenic bacteria, such as Campylobacter, in real-life processing conditions will make it possible to identify technological levers and better mitigate the microbial risk.
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Affiliation(s)
- Benjamin Duqué
- SECALIM, INRAE, Oniris, Université Bretagne Loire, 44307, Nantes, France
| | - Sandrine Rezé
- SECALIM, INRAE, Oniris, Université Bretagne Loire, 44307, Nantes, France
| | - Albert Rossero
- SECALIM, INRAE, Oniris, Université Bretagne Loire, 44307, Nantes, France
| | | | - Sandrine Guillou
- SECALIM, INRAE, Oniris, Université Bretagne Loire, 44307, Nantes, France
| | - Nabila Haddad
- SECALIM, INRAE, Oniris, Université Bretagne Loire, 44307, Nantes, France.
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den Besten HM, Amézquita A, Bover-Cid S, Dagnas S, Ellouze M, Guillou S, Nychas G, O'Mahony C, Pérez-Rodriguez F, Membré JM. Next generation of microbiological risk assessment: Potential of omics data for exposure assessment. Int J Food Microbiol 2018; 287:18-27. [DOI: 10.1016/j.ijfoodmicro.2017.10.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 09/15/2017] [Accepted: 10/03/2017] [Indexed: 12/30/2022]
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Cocolin L, Mataragas M, Bourdichon F, Doulgeraki A, Pilet MF, Jagadeesan B, Rantsiou K, Phister T. Next generation microbiological risk assessment meta-omics: The next need for integration. Int J Food Microbiol 2017; 287:10-17. [PMID: 29157743 DOI: 10.1016/j.ijfoodmicro.2017.11.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 10/15/2017] [Accepted: 11/12/2017] [Indexed: 02/07/2023]
Abstract
The development of a multi-omics approach has provided a new approach to the investigation of microbial communities allowing an integration of data, which can be used to better understand the behaviour of and interactions between community members. Metagenomics, metatranscriptomics, metaproteomics and metabolomics have the potential of producing a large amount of data in a very short time, however an important challenge is how to exploit and interpret these data to assist risk managers in food safety and quality decisions. This can be achieved by integrating multi-omics data in microbiological risk assessment. In this paper we identify limitations and challenges of the multi-omics approach, underlining promising potentials, but also identifying gaps, which should be addressed for its full exploitation. A view on how this new way of investigation will impact the traditional microbiology schemes in the food industry is also presented.
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Affiliation(s)
- Luca Cocolin
- University of Torino, Department of Agricultural, Forest and Food Sciences, Largo Braccini 95, 10095 Grugliasco, Torino, Italy.
| | - Marios Mataragas
- Hellenic Agricultural Organization "DIMITRA", Institute of Agricultural Products Technology, Milk Department, Ethnikis Antistaseos 3, 45221 Ioannina, Greece
| | - Francois Bourdichon
- Groupe Danone, Food Safety@DANONE, 17 Boulevard Haussmann, 75009 Paris, France
| | - Agapi Doulgeraki
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization-Demeter, S. Venizelou 1, 14123 Lycovrissi, Greece
| | | | - Balamurugan Jagadeesan
- Nestec Ltd. (Nestlé Research Center), Route du Jorat 57, Vers-chez-les-Blanc, CH-1000, Lausanne 26, Switzerland
| | - Kalliopi Rantsiou
- University of Torino, Department of Agricultural, Forest and Food Sciences, Largo Braccini 95, 10095 Grugliasco, Torino, Italy
| | - Trevor Phister
- PepsiCo international, Global Microbiological Sciences, Beaumont Park, Leicester, LE4 1ET, United Kingdom
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Desriac N, Postollec F, Coroller L, Pavan S, Combrisson J, Hallier-Soulier S, Sohier D. Trustworthy Identification of Resistance Biomarkers of Bacillus weihenstephanensis: Workflow of the Quality Assurance Procedure. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-1058-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ye M, Sun L, Yang R, Wang Z, Qi K. The optimization of fermentation conditions for producing cellulase of Bacillus amyloliquefaciens and its application to goose feed. ROYAL SOCIETY OPEN SCIENCE 2017; 4:171012. [PMID: 29134097 PMCID: PMC5666280 DOI: 10.1098/rsos.171012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/22/2017] [Indexed: 05/21/2023]
Abstract
The proper culture conditions for producing cellulase of Bacillus amyloliquefaciens S1, isolated from the cecum of goose was optimized by single-factor experiment combined with orthogonal test. The properties of the cellulase were investigated by DNS method. The appropriate doses of B. amyloliquefaciens S1 were obtained by adding them to goose feed. It indicated that the suitable culture conditions of producing cellulase were the culture temperature of 37°C, the initial pH of 7.0, the incubation time of 72 h and the loaded liquid volume of 75 ml per 250 ml. The effects of each factor on producing cellulase by B. amyloliquefaciens S1 were as follows: initial pH > incubation time = culture temperature > loaded liquid volume. The optimum reaction temperature and pH were 50°C and 7.0, respectively. This enzyme is a kind of neutral cellulase that possesses resistance to heat and acidity. It showed high activity to absorbent cotton, soya bean meal and filter paper. By adding different doses of B. amyloliquefaciens S1 to the goose feed, it was found that the egg production, average egg weight, fertilization rate and the hatching rate were promoted both in experiment 1 (1.5 g kg-1) and experiment 2 (3 g kg-1). Also the difference of egg production, fertilization rate and hatching rate between experiment 1 and control group was obvious (p < 0.05), and the average egg weight was significantly increased in experiment 2 (p < 0.05).
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Affiliation(s)
- Miao Ye
- Center for Developmental Biology, College of Life Science, Anhui Agricultural University, No. 130, Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Linghong Sun
- Center for Developmental Biology, College of Life Science, Anhui Agricultural University, No. 130, Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Ru Yang
- Center for Developmental Biology, College of Life Science, Anhui Agricultural University, No. 130, Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Zaigui Wang
- Center for Developmental Biology, College of Life Science, Anhui Agricultural University, No. 130, Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - KeZong Qi
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology Anhui Agricultural University, Hefei, Anhui 230036, People's Republic of China
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Sohier D, Riou A, Postollec F. A typical day working in a laboratory in 2050: are microbiologists becoming chemists and serene workers? Curr Opin Food Sci 2016. [DOI: 10.1016/j.cofs.2016.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Differential gene expression profiling of Listeria monocytogenes in Cacciatore and Felino salami to reveal potential stress resistance biomarkers. Food Microbiol 2015; 46:408-417. [DOI: 10.1016/j.fm.2014.09.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 09/02/2014] [Accepted: 09/06/2014] [Indexed: 01/20/2023]
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Desriac N, Coroller L, Jannic F, Postollec F, Sohier D. mRNA biomarkers selection based on Partial Least Square algorithm in order to further predict Bacillus weihenstephanensis acid resistance. Food Microbiol 2015; 45:111-8. [DOI: 10.1016/j.fm.2014.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/02/2014] [Accepted: 01/03/2014] [Indexed: 12/26/2022]
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Desriac N, Broussolle V, Postollec F, Mathot AG, Sohier D, Coroller L, Leguerinel I. Bacillus cereus cell response upon exposure to acid environment: toward the identification of potential biomarkers. Front Microbiol 2013; 4:284. [PMID: 24106490 PMCID: PMC3788345 DOI: 10.3389/fmicb.2013.00284] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 09/03/2013] [Indexed: 01/20/2023] Open
Abstract
Microorganisms are able to adapt to different environments and evolve rapidly, allowing them to cope with their new environments. Such adaptive response and associated protections toward other lethal stresses, is a crucial survival strategy for a wide spectrum of microorganisms, including food spoilage bacteria, pathogens, and organisms used in functional food applications. The growing demand for minimal processed food yields to an increasing use of combination of hurdles or mild preservation factors in the food industry. A commonly used hurdle is low pH which allows the decrease in bacterial growth rate but also the inactivation of pathogens or spoilage microorganisms. Bacillus cereus is a well-known food-borne pathogen leading to economical and safety issues in food industry. Because survival mechanisms implemented will allow bacteria to cope with environmental changes, it is important to provide understanding of B. cereus stress response. Thus this review deals with the adaptive traits of B. cereus cells facing to acid stress conditions. The acid stress response of B. cereus could be divided into four groups (i) general stress response (ii) pH homeostasis, (iii) metabolic modifications and alkali production and (iv) secondary oxidative stress response. This current knowledge may be useful to understand how B. cereus cells may cope to acid environment such as encountered in food products and thus to find some molecular biomarkers of the bacterial behavior. These biomarkers could be furthermore used to develop new microbial behavior prediction tools which can provide insights into underlying molecular physiological states which govern the behavior of microorganisms and thus opening the avenue toward the detection of stress adaptive behavior at an early stage and the control of stress-induced resistance throughout the food chain.
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Affiliation(s)
- Noémie Desriac
- ADRIA Développement, UMT 08.3 PHYSI’Opt, QuimperFrance
- EA3882, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, UMT 08.3 PHYSI’Opt, IFR148 ScInBioS, Université de BrestQuimper, France
| | - Véronique Broussolle
- UMR408, Sécurité et Qualité des Produits d’Origine Végétale, Institut National de la Recherche AgronomiqueAvignon, France
- UMR408, Sécurité et Qualité des Produits d’Origine Végétale, Université d’Avignon et des Pays de VaucluseAvignon, France
| | | | - Anne-Gabrielle Mathot
- EA3882, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, UMT 08.3 PHYSI’Opt, IFR148 ScInBioS, Université de BrestQuimper, France
| | | | - Louis Coroller
- EA3882, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, UMT 08.3 PHYSI’Opt, IFR148 ScInBioS, Université de BrestQuimper, France
| | - Ivan Leguerinel
- EA3882, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, UMT 08.3 PHYSI’Opt, IFR148 ScInBioS, Université de BrestQuimper, France
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