Foodborne Pathogenic Bacteria: Prevalence and Control: Third Edition

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Microbiology".

Deadline for manuscript submissions: closed (20 November 2024) | Viewed by 816

Special Issue Editors


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Guest Editor
MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: detection and subtyping of foodborne pathogenic bacteria; prevalence; persistence and stress survival of foodborne pathogenic bacteria on food chain from farm to table
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CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
Interests: antimcrobial alternatives; stress response; antibiofilm
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Volume I (https://www.mdpi.com/journal/foods/special_issues/Food_Bioactives) and Volume II (https://www.mdpi.com/journal/foods/special_issues/T5ES6N4630) of this Special Issue were incredibly successful. We would like to express our gratitude to everyone involved for their participation, as well as for the support of numerous high-profile scientists.

Foodborne pathogenic bacteria threaten the safety of the food system from farms to our tables. To enhance the safety of our food system, the first step is to understand how the food system has been and could still be contaminated by pathogenic bacteria, such as pathogenic Escherichia coli, non-typhoidal Salmonella, Vibrio parahaemolyticus, Staphylococcus aureus, Listeria monocytogenes and other emerging and re-emerging pathogenic bacteria. On the other hand, we also need to understand how these bacteria can survive different processing and preservation steps in the food system. As of now, biofilm formation and antimicrobial resistance may explain the mechanisms behind the bacteria’s survival. However, gaps in our knowledge still exist. Once we have acquired basic information, we will be able to prevent and control the contamination of foodborne pathogenic bacteria.

Dr. Chunlei Shi
Dr. Shimo Kang
Guest Editors

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Keywords

  • biofilm
  • antimicrobial resistance
  • stress response
  • cross-contamination
  • risk assessment
  • antimicrobial alternatives
  • antibiofilm

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Published Papers (1 paper)

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Research

16 pages, 4306 KiB  
Article
Roles of Response Regulators in the Two-Component System in the Formation of Stress Tolerance, Motility and Biofilm in Salmonella Enteritidis
by Mengjun Hu, Zhuoan Zhou, Chenqi Liu, Zeqiang Zhan, Yan Cui, Shoukui He and Xianming Shi
Foods 2024, 13(22), 3709; https://doi.org/10.3390/foods13223709 - 20 Nov 2024
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Abstract
Two-component systems (TCS) of Salmonella enterica serovar Enteritidis are composed of a histidine kinase and a response regulator (RR) and represent a critical mechanism by which bacteria develop resistance to environmental stress. Here, we characterized the functions of RRs in TCS in the [...] Read more.
Two-component systems (TCS) of Salmonella enterica serovar Enteritidis are composed of a histidine kinase and a response regulator (RR) and represent a critical mechanism by which bacteria develop resistance to environmental stress. Here, we characterized the functions of RRs in TCS in the formation of stress tolerance, motility and biofilm using twenty-six S. Enteritidis RR-encoding gene deletion mutants. The viability results unraveled their essential roles in resistance to elevated temperature (GlrR), pH alterations (GlrR, TctD, YedW, ArcA and YehT), high salt (PhoB, BaeR, CpxR, PhoP, UvrY and TctD), oxidative stress (PhoB, YedW, BaeR, ArcA, PhoP, UvrY, PgtA and QseB) and motility (ArcA, GlnG, PgtA, PhoB, UhpA, OmpR, UvrY and QseB) of S. Enteritidis. The results of the crystal violet staining, microscopy observation and Congo red binding assays demonstrated that the absence of ArcA, GlnG, PhoP, OmpR, ZraR or SsrB in S. Enteritidis led to a reduction in biofilms and an impairment in red/dry/rough macrocolony formation, whereas the absence of UvrY exhibited an increase in biofilms and formed a brown/smooth/sticky macrocolony. The results indicated the regulatory effects of these RRs on the production of biofilm matrix, curli fimbriae and cellulose. Our findings yielded insights into the role of TCSs, making them a promising target for combating S. Enteritidis. Full article
(This article belongs to the Special Issue Foodborne Pathogenic Bacteria: Prevalence and Control: Third Edition)
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