Abstract：As a special microbial community that forms a stable symbiotic relationship with the host, tobacco (Nicotiana tabacum) endophytes are valuable in biocontrol, bioprophylaxis and host ecological adaptation regulation. This review summarized the species diversity of tobacco endophytes and their functional research progress, and found that Bacillus, Fusarium and Streptomyces, as the dominant flora, could promote tobacco growth and development through biological nitrogen fixation, organic phosphorus solubilisation, phytohormone synthesis and systemic resistance induction. In addition, this paper also discussed the analysis of the functional genes of tobacco endophytes and the challenges they faced in the process of production and application, and provides a theoretical basis for the selection and breeding of speciality high-quality tobacco in China.
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