ArticleJournal, genetic engineering & biotechnology2019
Expression of DnaK and HtrA genes under high temperatures and their impact on thermotolerance of a Salmonella serotype isolated from tahini product.
Article in Journal, genetic engineering & biotechnology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Phenotypic Characterization of Null Mutants of ΔcbpA and ΔcbpB in S. enterica Serovar Typhimurium.Current microbiology · 2025Article
- Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Composting: A biosecurity measure to maximize the benefit of broilers̕ litter.Journal of advanced veterinary and animal research · 2023Article
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Authors and funding
4 authors.
Funding
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Abstract
backgroundSalmonella is considered to be the second largest source of infection in food-borne diseases. It is also considered one of the most important dangers particularly in the meat and dairy industry. Therefore, the main objective of our study was to determine the relationship between thermotolerance of a Salmonella serotype and the expression of DnaK and HtrA genes.
resultsIn this study, expression of the two genes DnaK and HtrA was compared under four different temperatures 37 °C, 42 °C, 50 °C, and 55 °C in two serotypes of Salmonella enterica subsp. enterica. One of them was isolated from tahini product and identified as Salmonella enterica subsp. enterica serovar choleraesuis. This identified serotype was found to be more thermotolerant than the second serotype (Salmonella enterica subsp. enterica serovar typhimurium (ATCC 13311)), which was used as reference. This conclusion was based on D and Z values, which were used to compare thermoresistance ability of the two serotypes under four different temperatures 60 °C, 65 °C, 70 °C, and 75 °C. In addition, the results of qRT-PCR showed that after 43 °C (induction temperature), the relative expression (fold change) of DnaK and HtrA genes increased up to 5 and 47, respectively, comparing to their expression at 37 °C.
conclusionsThermotolerance of the identified S. choleraesuis serotype showed significantly high expression levels of DnaK and HtrA genes.
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