Biofilm and Pathogenesis-Related Proteins in the Foodborne P. fluorescens ITEM 17298 With Distinctive Phenotypes During Cold Storage

Frontiers in Microbiology
Laura QuintieriKatharina Riedel

Abstract

In food chain, Pseudomonas spp. cause spoilage by reducing shelf life of fresh products, especially during cold storage, with a high economic burden for industries. However, recent studies have shed new light on health risks occurring when they colonize immunocompromised patient tissues. Likewise to P. aeruginosa, they exhibit antibiotic resistance and biofilm formation, responsible for their spread and persistence in the environment. Biofilm formation might be induced by environmental stresses, such as temperature fluctuations causing physiological and metabolic changes exacerbating food spoilage (by protease and pigment synthesis), and the production of adhesion molecules, chemotactic or underestimated virulence factors. In order to provide a new insight into phenotypic biodiversity of Pseudomonas spoilers isolated from cold stored cheese, in this work 19 Pseudomonas spp. were investigated for biofilm, pigments, exopolysaccharide production and motility at low temperature. Only nine strains showed these phenotypic traits and the blue pigmenting cheese strain P. fluorescens ITEM 17298 was the most distinctive. In addition, this strain decreased the survival probability of infected Galleria mellonella larvae, showing, for the f...Continue Reading

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Citations

Apr 22, 2021·Scientific Data·Tae Woong WhonSeong Woon Roh
Oct 1, 2021·Frontiers in Cellular and Infection Microbiology·Rachael M WilsonKingsley Yin

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Methods Mentioned

BETA
Assay
motility assays
environmental stresses

Software Mentioned

MeV
InterProScan©
Sorcerer SEQUEST
VF analyzer
BLASTP
Prophane
SPSS Statistics
Proteome
Scaffold
MEROPS Blast service

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