Comparative Genomic Analysis of Isolated from Different Niches.

can adapt to a variety of niches and is widely distributed in many sources. We used comparative genomics to explore the differences in the genome and in the physiological characteristics of isolated from pickles, fermented sauce, and human feces. The relationships between genotypes and phenotypes were analyzed to address the effects of isolation source on the genetic variation of . The comparative genomic results indicate that the numbers of unique genes in the different strains were niche-dependent. isolated from fecal sources generally had more strain-specific genes than isolated from pickles. The phylogenetic tree and average nucleotide identity (ANI) results indicate that in pickles and fermented sauce clustered independently, whereas the fecal was distributed more uniformly in the phylogenetic tree. The pan-genome curve indicated that the exhibited high genomic diversity. Based on the analysis of the carbohydrate active enzyme and carbohydrate-use abilities, we found that strains isolated from different sources exhibited different expression of the Glycoside Hydrolases (GH) and Glycosyl Transferases (GT) families and that the expression patterns of carbohydrate active enzymes were consistent with the evolution relationships of the strains. strains exhibited niche-specific characteristicsand the results provided better understating on genetics of this species.