In vitro probiotic characteristics and whole-genome sequence analysis of lactic acid bacteria isolated from monkey faeces.

This study aimed to isolate lactic acid bacteria from monkey faeces and evaluate their safety and probiotic properties through a combination of in vitro assays and complete genomic sequencing. The results revealed that two strains (LDHa and LSHe) exhibited promising probiotic attributes: no hemolytic activity, remarkable antibacterial activity against intestinal pathogens, high bile salt tolerance (77.46% survival rate for LDHa at 0.

Evolutionary Principles of Bacterial Signaling Capacity and Complexity.

Microbes rely on signal transduction systems to sense and respond to environmental changes for survival and reproduction. It is generally known that niche adaptation plays an important role in shaping the signaling repertoire. However, the evolution of bacterial signaling capacity lacks systematic studies with a temporal direction.

Identification of Molecular Markers That Are Specific to the Class .

The class is one of the deep-rooting lineages within the phylum and metagenomic investigation of microbial diversity suggested that species associated with the class are abundant in hot spring and soil samples. However, very few species of this class have been cultivated and characterized. Our understanding of the phylogeny and taxonomy of is solely based on 16S rRNA sequence analysis of limited cultivable representatives, but no other phenotypic or genotypic characteristics are known that can clearly discriminate members of this class from the other taxonomic units within the kingdom bacteria.