Comparative Genomics of Halobacterium salinarum Strains Isolated from Salted Foods Reveals Protechnological Genes for Food Applications.
Alessandra FontanaIrene FalasconiPaolo BellassiElisabetta FanfoniEdoardo PuglisiLorenzo MorelliPublished in: Microorganisms (2023)
Archaeal cell factories are becoming of great interest given their ability to produce a broad range of value-added compounds. Moreover, the Archaea domain often includes extremophilic microorganisms, facilitating their cultivation at the industrial level under nonsterile conditions. Halophilic archaea are studied for their ability to grow in environments with high NaCl concentrations. In this study, nine strains of Halobacterium salinarum were isolated from three different types of salted food, sausage casings, salted codfish, and bacon, and their genomes were sequenced along with the genome of the collection strain CECT 395. A comparative genomic analysis was performed on these newly sequenced genomes and the publicly available ones for a total of 19 H. salinarum strains. We elucidated the presence of unique gene clusters of the species in relation to the different ecological niches of isolation (salted foods, animal hides, and solar saltern sediments). Moreover, genome mining at the single-strain level highlighted the metabolic potential of H. salinarum UC4242, which revealed the presence of different protechnological genes (vitamins and myo -inositol biosynthetic pathways, aroma- and texture-related features, and antimicrobial compounds). Despite the presence of genes of potential concern (e.g., those involved in biogenic amine production), all the food isolates presented archaeocin-related genes (halocin-C8 and sactipeptides).
Keyphrases
- genome wide
- human health
- genome wide identification
- escherichia coli
- single cell
- risk assessment
- heavy metals
- dna methylation
- bioinformatics analysis
- copy number
- climate change
- genome wide analysis
- staphylococcus aureus
- wastewater treatment
- genetic diversity
- transcription factor
- cell therapy
- bone marrow
- magnetic resonance
- computed tomography