Genomic analysis of Companilactobacillus musae zy130 isolated from corn silage reveals its potential as a superior silage inoculant
摘要
The isolation of functional lactobacilli is critical for producing high-quality silage. Advances in niche adaptation research and whole-genome sequencing have facilitated the screening of functional strains. This study evaluated the potential of Companilactobacillus musae zy130, isolated from corn silage, as a superior silage inoculant through genomic analysis. Functional traits of Companilactobacillus musae zy130 were characterized. The results revealed that there were diverse carbohydrate-active enzymes (CAZymes) and sugar-utilization operons in Companilactobacillus musae zy130 genome. And, 21 genes encoding adhesion-related proteins were identified in Companilactobacillus musae zy130 genome, along with genes associated with heat, cold, and acid stress resistance. In addition, comparative genomics with two food-derived Companilactobacillus musae strains elucidated genome plasticity and niche-specific adaptations. Strain-specific genes involved in genomic integration, biosynthesis, and metabolic pathways were identified in the Companilactobacillus musae zy130 genome, suggesting its enhanced adaptability to silage conditions. These genomic features, including efficient sugar utilization, adhesion capacity, and robust stress tolerance, collectively demonstrate that Companilactobacillus musae zy130 is better adapt to for silage fermentation. As the first reported Companilactobacillus musae isolate from corn silage, this strain demonstrates its significant promise as an excellent inoculant for improving silage quality.