Abstract
To gain deeper insights into the genomic characteristics of Limosilactobacillus reuteri (L. reuteri) YLR001 and uncover its probiotic properties, in the current study, a comprehensive analysis of its whole genome was conducted, explicitly exploring the genetic variations associated with different host organisms. The genome of YLR001 consisted of a circular 2,242,943 bp chromosome with a GC content of 38.84%, along with three circular plasmids (24,864, 38, 926, and 132,625 bp). Among the 2183 protein-coding sequences (CDSs), the specific genes associated with genetic adaptation and stress resistance were identified. We predicted the function of COG protein genes and analyzed the KEGG pathways. Comparative genome analysis revealed that the pan-genome contained 5207 gene families, including 475 core gene families and 941 strain-specific genes. Phylogenetic analysis revealed distinct host specificity among 20 strains of L. reuteri, highlighting substantial genetic diversity across different hosts. This study enhanced our comprehension of the genetic diversity of L. reuteri YLR001, demonstrated its potential probiotic characteristics, and established more solid groundwork for future applications.
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