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Abstract

Pediococcus pentosaceus isolated from fermented food and the gastrointestinal tracts of humans and animals have been widely identified, and some strains have been reported to reduce inflammation, encephalopathy, obesity and fatty liver in animals. In this study, the genomes of 65 P. pentosaceus strains isolated from human and animal feces and different fermented food were sequenced and comparative genomics analysis was performed on all strains along with nine sequenced representative strains to preliminarily reveal the lifestyle of P. pentosaceus, and investigate the genomic diversity within this species. The results reveal that P. pentosaceus is not host-specific, and shares core genes encoding proteins related to translation, ribosomal structure and biogenesis and signal transduction mechanisms, while its genetic diversity relates mainly to carbohydrate metabolism, and horizontally transferred DNA, especially prophages and bacteriocins encoded on plasmids. Additionally, this is the first report of a type IIA CRISPR/Cas system in P. pentosaceus. This work provides expanded resources of P. pentosaceus genomes, and offers a framework for understanding the biotechnological potential of this species.

Keywords: CRISPR/Cas; Pediococcus pentosaceus; bacteriocin; carbohydrate utilization; comparative genomics; genetic diversity; prophage.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Pediococcus pentosaceus KABP™-041Reduced EncephalopathyBeneficial
Moderate
Pediococcus pentosaceus KABP™-041Reduced Hepatic Fat AccumulationBeneficial
Moderate
Pediococcus pentosaceus KABP™-041Reduced Inflammation LevelsBeneficial
Moderate
Pediococcus pentosaceus KABP™-041Reduced ObesityBeneficial
Moderate
Pediococcus pentosaceus PP06Reduced EncephalopathyBeneficial
Moderate
Pediococcus pentosaceus PP06Reduced Hepatic Fat AccumulationBeneficial
Moderate
Pediococcus pentosaceus PP06Reduced Inflammation LevelsBeneficial
Moderate
Pediococcus pentosaceus PP06Reduced ObesityBeneficial
Moderate

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