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A core genome phylogenomic analysis of two lactic acid bacteria isolates from spoiled beer, Furfurilactobacillus sp. LTH 5742 and LTH 5750, one isolate from sourdough, Furfurilactobacillus sp. C5, and the type strains of five Furfurilactobacillus species were performed. Average nucleotide identity and digital DNA–DNA hybridization analyses revealed two distinct phylogenetic lineages, both clearly separated from the five previously described Furfurilactobacillus species. Based on these data, two novel species were proposed: Furfurilactobacillus cerevisiae sp. nov., represented by strains LTH 5742 T (=DSM 120514 T =LMG 34151 T ) and LTH 5750, and Furfurilactobacillus cerealis sp. nov., represented by strain C5 T (=DSM 120515 T =LMG 34152 T ). Comparative genomic analyses highlighted distinct metabolic signatures concerning the 1,2-propanediol and hydroxycinnamic acid metabolism. The gene aldA encoding lactaldehyde dehydrogenase, contributing to 1,2-propanediol production from lactate, is present in Ff . spp. LTH 5742 T and LTH 5750, Ff . spp. C5 T and Furfurilactobacillus rossiae but not in Furfurilactobacillus milii . Genes for 1,2-propanediol conversion to propionate and propanol are present in Ff. rossiae but not in one of the other species. The glutathione reductase gene, gshR , was uniquely detected in Ff. cerealis , Ff. rossiae and ‘ Furfurilactobacillus entadae’ . These findings expand the diversity of the genus Furfurilactobacillus and provide insight into their ecological adaptation in cereal-based fermentations.
Zipori et al. (Thu,) studied this question.