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烟草是我国重要的经济作物之一，是地方和国家经济收入的重要来源。叶片是主要的收获器官，其质量好坏直接影响烤烟的品质和安全性。但是，烟草在生长过程中易受多种病虫害危害，有些病害严重影响烟叶品质。因此，研究各种病原菌的生物学特性、病害发生机制及抗性基因的遗传机制等，有利于抑制或减少烟草病害的发生，从而可以减少农药使用量，提高烟叶品质和安全性，同时对环境的保护也是有利的。
Tobacco is one of the important cash crops in our country and an important source of local and national economic income. Leaf is the main harvesting organ, the quality of which directly affects the quality and safety of flue-cured tobacco. However, tobacco is susceptible to many pests and diseases during its growth, and some diseases seriously affect the quality of tobacco. Therefore, studying the biological characteristics of various pathogenic bacteria, the mechanism of disease occurrence and the genetic mechanism of resistance genes are beneficial to the suppression or reduction of the occurrence of tobacco diseases, thereby reducing the amount of pesticide used, improving the quality and safety of tobacco leaves, The protection is also good.