植物病原细菌多为革兰氏阴性菌。细菌的分泌系统与其致病性有密切的联系,其研究对揭示植物病原细菌的致病机理具有重要意义。现从细菌分泌系统、西瓜嗜酸菌致病机理及Ⅱ型和Ⅲ型分泌系统与西瓜嗜酸菌致病性之间的关系等角度出发,重点阐述了与西瓜嗜酸菌分泌系统有关的功能基因,为进一步研究西瓜嗜酸菌的作用机理及寻找其致病性靶标提供理论依据。 Most of the plant pathogenic bacteria are Gram-negative bacteria. Bacterial secretion system is closely related to its pathogenicity, and its research is of great significance to reveal the pathogenic mechanism of plant pathogenic bacteria. Now from the bacterial secretion system, pathogenic mechanism of watermelon acidophilic pathogens and type Ⅱ and Ⅲ secretion system and watermelon acidophilic pathogenic relationship between the point of view, focusing on the watermelon acidophilus secretion system-related functions Gene, provide theoretical basis for further study of the mechanism of watermelon acidophilic bacteria and find its pathogenic target.