Fecha de publicación: 08/12/2023 Fuente: WIPO "tobacco agriculture" The invention relates to brevibacillus brevis Ni18 capable of efficiently degrading nicotine and tobacco-specific nitrosamine pollution and application, and belongs to the field of microorganisms. According to the present invention, the bacterial strain is separated and screened from the surface of the cigar tobacco leaf, the bacterial strain is identified as the polluted brevibacillus sp. Through morphology, molecular biology and the like, the polluted brevibacillus sp. Is named as the polluted brevibacillus sp. Ni18, and the preservation number is CCTCC NO: M 20221336. The strain can achieve efficient degradation of nicotine and specific nitrosamine in tobacco, is good in stress resistance, simple, convenient and easy to obtain and convenient to use, has wide market application prospects, and provides a precious microbial resource for tobacco agriculture harm reduction.