文献类型： 外文期刊
作者： Shen, Tong 1 ; Ye, Mengdi 3 ; Xu, Yeping 1 ; Ding, Bohan 1 ; Li, Hongtao 1 ; Zhang, Li 3 ; Wang, Jun 3 ; Tian, Yanli 1 ; Hu, Baishi 1 ; Zhao, Youfu 6 ;
作者机构： 1.Nanjing Agr Univ, Coll Plant Protect, Key Lab Integrated Management Crop Dis & Pests, Minist Educ, Nanjing 210095, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Plant Quarantine Pests Monitoring & Contro, Nanjing 210095, Peoples R China
3.Plant Protect & Quarantine Stn Xinjiang Uygur Auto, Urumqi 830001, Peoples R China
4.Xinjiang Acad Agr Sci, Inst Plant Protect, Xinjiang Key Lab Agr Biosafety, Urumqi 830013, Peoples R China
5.Xinjiang Agr Univ, Coll Agr, Urumqi 830052, Peoples R China
6.Washington State Univ, Plant Pathol Dept, Prosser, WA 24106 USA
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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