Recently, a metagenomic study of a water kefir fermentation ecosystem enabled the reconstruction of a meta-genome-assembled genome (MAG) of anOenococcusspecies that was different from the three species of thisgenus known so far. Therefore, the nameCandidatusOenococcus aquikefiri was proposed for this novelOenococcusspecies. In the meantime, however, a fourth member of the genus,Oenococcus sicerae, isolated fromFrench cider, was reported. The comparison of its genome sequence with theCandidatusO. aquikefiri MAGshowed an average nucleotide identity (ANI) value of 98.53%. In addition, the 16S rRNA andpheSgenes of thetwo species were 99.4% and 99.9% identical, respectively. As the presence ofO. siceraein a water kefir meta-genome was also revealed by metagenomic recruitment plotting, it can be stated thatCandidatusO. aquikefiriandO. siceraebelong to the same species. Intraspecies variations include the presence or absence of a citratelyase operon and components of various phosphotransferase (PTS) transport systems.
Original languageEnglish
Article number103402
Number of pages5
JournalFood Microbiology
Publication statusPublished - Jun 2020

    Research areas

  • Water kefir, Cider, Metagenome-assembled genome, CandidatusOenococcus aquikefiri, Oenococcus sicerae, Taxonomy

ID: 49035387