ArticleCurrent microbiology2025
Bacteria in the Phylum Bacillota Degrade Nicotine Through the Variant of Pyridine and Pyrrolidine Pathway.
Article in Current microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Nicotine is a harmful contaminant primarily derived from the waste produced by tobacco manufacturing facilities. Many bacterial strains have been reported to degrade nicotine, indicating their potential application in removing nicotine from sewage for wastewater treatment. The microbial degradation of nicotine is a green, economical, and efficient strategy, leading to a significant interest in discovering novel nicotine-degrading bacterial isolates. In this study, we isolated and identified 192 strains from tobacco leaves, roots, and rhizosphere soil. Nicotine utilization assays showed that 64 out of 192 strains had the potential capability of nicotine degradation, primarily within the genera Bacillus, Peribacillus, and Priestia in phylum Bacillota. Comparative genome analysis identified genes related to the variant of pyridine and pyrrolidine pathway scattered throughout the genomes of novel Bacillota strains. Phylogenetic analysis indicated that essential genes from these strains were evolutionarily distinct from others, forming a monophyletic clade. Our observations revealed that nicotine degradation-related genes have relatively independent origins and complex evolutionary histories in the phylum Bacillota.
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