Hydrostatic pressure- and halotolerance of Photobacterium phosphoreum and P. carnosum isolated from spoiled meat and salmon

Comparative genomics of Photobacterium species from terrestrial and marine habitats

“…All isolates are predicted to carry out aerobic and anerobic respiration. The sodium-translocating NADH:quinone oxidoreductase found in all strains, an analog to Complex I of the respiratory chain that pumps Na+ instead of H + ( Verkhovsky and Bogachev, 2010 ), is consistent with the sodium requirement of the three photobacterium species ( Fuertes-Perez et al., 2019 ; Hauschild et al., 2020 ; Hilgarth et al., 2018a , 2018b ). However, presence of high-oxygen affinity cytochrome cbb3-type oxidase ( Pitcher and Watmough, 2004 ) in P. phosphoreum and P. iliopiscarium , and the full copy of the proton-translocating Complex I ( nuo A-N) only present in P. phosphoreum strains might offer advantages in low anoxic/microaerobic and low sodium environments, respectively.…”

“…As previously studied by Hauschild et al. (2020) , we have investigated the genomes of all strains for the presence of genes facilitating salt, pressure and oxidative stress response as well as life-style related traits such as motility, bioluminescence, sodium intake and iron accumulation.…”

“…Studies have been published previously on the genomics of photobacteria, either on a limited number of strains of several species of the genus ( Machado and Gram, 2017 ; Urbanczyk et al., 2010 ), focused on strains of a specific species ( Roslan et al., 2020 ; Yu et al., 2019 ) or certain relevant traits such as piezophilic adaptation ( Allen and Bartlett, 2000 ; Campanaro et al., 2005 ; Hauschild et al., 2020 ), salt adaptation ( Wu et al., 2006 ), lux-rib operon ( Urbanczyk et al., 2008 , 2012 ) and motility ( Eloe et al., 2008 ). Since P. phosphoreum, P. iliopisicarum and P. carnosum are the first species widely found in a completely aquatic-unrelated environment, this study aimed to explore the genomic diversity based on terrestrial versus aquatic isolates and between the species.…”

Identification of the Specific Spoilage Organism in Farmed Sturgeon (Acipenser baerii) Fillets and Its Associated Quality and Flavour Change during Ice Storage

“…Shewanella putrefaciens is a famous marine fish spoilage bacterium, producing trimethylamine and H 2 S in the process of metabolism, which brings strong odor [ 17 , 18 ]. Photobacterium phosphoreum , associated with acetic acid production, is considered as a spoilage marker in modified atmosphere packaged raw salmon [ 19 ]. Production of volatile compounds, such as trimethylamine, ethyl acetate and butanol were believed to play important role in Serratia liqefaciens spoiled cold-smoked salmon [ 18 ].…”

“…Production of volatile compounds, such as trimethylamine, ethyl acetate and butanol were believed to play important role in Serratia liqefaciens spoiled cold-smoked salmon [ 18 ]. The Carnobacterium maltaromaticum can produce 3-methyl-1-butanal, 2-methyl-1-butanal, 2, 3-butanedione and ethyl acetate, which is also a major spoilage bacterium in fish products [ 19 ]. Other typical spoilage bacteria, such as Pseudomonas fragi , Pseudomonas fluorescens, and Shewanella putrefaciens also showed different metabolic characteristics when inoculated into sterile Sebastes melanops muscle [ 20 , 21 , 22 , 23 , 24 ].…”