Cytospora pyri promotes Erwinia amylovora virulence by providing metabolites and hyphae

文献类型： 外文期刊

第一作者： Shen, Tong

作者： Shen, Tong;Xu, Yeping;Ding, Bohan;Li, Hongtao;Tian, Yanli;Hu, Baishi;Shen, Tong;Xu, Yeping;Ding, Bohan;Li, Hongtao;Tian, Yanli;Hu, Baishi;Ye, Mengdi;Zhang, Li;Wang, Jun;Tian, Yanli;Hu, Baishi;Hu, Baishi;Zhao, Youfu

作者机构：

关键词： pear fire blight; Erwinia amylovora; Valsa canker; amylovoran; synergy

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN： 2095-3119

年卷期： 2024 年 23 卷 9 期

页码：

收录情况： SCI

摘要： Bacterial-fungal interactions are widespread in nature. We observed that pear orchards affected by Cytospora pyri (formerly Valsa pyri) ) were often accompanied with Erwinia amylovora. . However, the relationship of the two pathogens was unclear. The objective of this study was to determine whether the synergistic effect exists between E . amylovora and C . pyri. . We first analyzed the coexistence frequencies of E . amylovora and C . pyri in pear trees. Virulence of the two pathogens, growth, physical interactions, amylovoran production, and expression of genes for amylovoran biosynthesis were conducted. Our results showed that E . amylovora and C . pyri could coexist on the same lesion and caused much more severe disease. We also found that E . amylovora could physically attach to C . pyri and the expression of amylovoran biosynthesis genes were up-regulated with fungal metabolite treatment. These results indicate that E . amylovora and C . pyri can cooperatively interact, which provides C . pyri with an opportunity to promote bacterial dispersal and production of virulence factor in E . amylovora. .

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