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

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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.

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Funding

Part of this work was funded by the German Federal Ministry for Economic Affairs and Energy via the German Federation of Industrial Research Associations (AiF) and the Industry Association for Food Technology and Packaging (IVLV); project number AiF 20113N1.

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PH: conceptualization, methodology, validation, formal analysis, investigation, resources, data curation, writing—original draft, writing—review and editing, visualization. RFV: writing—review and editing, project administration, funding acquisition. MH: writing—review and editing, conceptualization, supervision, project administration, funding acquisition. All authors read and approved the final manuscript.

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Correspondence to Maik Hilgarth.

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The authors have no competing interests to declare that are relevant to the content of this article.

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Communicated by Erko Stackebrandt.

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Hauschild, P., Vogel, R.F. & Hilgarth, M. Transcriptomic analysis of the response of Photobacterium phosphoreum and Photobacterium carnosum to co-contaminants on chicken meat. Arch Microbiol 204, 467 (2022). https://doi.org/10.1007/s00203-022-03059-6

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  • DOI: https://doi.org/10.1007/s00203-022-03059-6

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