Survival of poultry-derived Campylobacter jejuni of multilocus sequence type clonal complexes 21 and 45 under freeze, chill, oxidative, acid and heat stresses

Food Microbiology
Ihab HabibL De Zutter

Abstract

The application of multilocus sequence typing (MLST) for studying Campylobacter jejuni diversity reveals that MLST clonal complex (CC) 21 and CC-45 occupies significant proportion in the diverse population of C. jejuni. These two complexes are ecologically abundant and represent an interesting subpopulation for studying C. jejuni survival under different stress conditions. In the present study we characterize and compare 19 C. jejuni strains assigned to CC-21 and CC-45, isolated from chicken meat, based on laboratory stress models maintained in Muller-Hinton broth. Model conditions were mimicking freeze, chill, oxidative, acid and heat stresses. Results show that survival patterns varied between the strains. C. jejuni strains of CC-21 survived significantly better than C. jejuni strains of CC-45 under heat (P value = 0.022) and chill (P value = 0.001) stress models. On the other hand, C. jejuni strains of CC-45 showed significantly better survival compared to C. jejuni strains of CC-21 in response to oxidative (P value = 0.003) and freeze (P value = 0.021) stress models. C. jejuni strains assigned to the founder ST-45 showed significantly better survival (P value = 0.017) under heat stress model compared to their ancestral sequ...Continue Reading

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Feb 1, 2011·Applied and Environmental Microbiology·Andreas E ZautnerUwe Gross
Jan 17, 2016·International Journal of Food Microbiology·Leonard KoolmanDeclan Bolton
Jan 15, 2011·Journal of Medical Microbiology·Nicola J SeniorRichard W Titball
Feb 23, 2021·Frontiers in Cellular and Infection Microbiology·Se-Hun KimDeog Hwan Oh
May 16, 2021·Scientific Reports·Lennard EppingTorsten Semmler

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