Transcriptomic analysis of the response of Photobacterium phosphoreum and Photobacterium carnosum to co-contaminants on chicken meat

Philippa Hauschild, Rudi F. Vogel, Maik Hilgarth

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This study investigated the impact of Brochothrix (B.) thermosphacta and Pseudomonas (Ps.) fragi on the transcriptomes of Photobacterium (P.) phosphoreum and P. carnosum on chicken meat under modified atmosphere (MA) and air atmosphere (AA). P. phosphoreum TMW2.2103 responded to MA with a reduced transcript number related to cell division and an enhanced number related to oxidative stress. Concomitantly, the analysis revealed upregulation of fermentation and downregulation of respiration. It predicts enhanced substrate competition in presence of co-contaminants/MA. In contrast, the strain upregulated the respiration in AA, supposably due to improved substrate accessibility in this situation. For P. carnosum TMW2.2149 the respiration was downregulated, and the pyruvate metabolism upregulated under MA. MA/co-contaminant resulted in multiple upregulated metabolic routes. Conversely, AA/co-contaminant resulted only in minor regulations, showing inability to cope with fast growing competitors. Observations reveal different strategies of photobacteria to react to co-contaminants on meat.

Original languageEnglish
Article number467
JournalArchives of Microbiology
Volume204
Issue number8
DOIs
StatePublished - Aug 2022

Keywords

  • Interaction
  • Meat spoilage
  • Modified atmosphere packaging
  • Photobacterium
  • Transcriptomics

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