Tal2b targets and activates the expression of OsF3H(03g) to hijack OsUGT74H4 and synergistically interfere with rice immunity
文献类型： 外文期刊
作者： Wu, Tao 1 ; Zhang, Haimiao 1 ; Yuan, Bin 3 ; Liu, Haifeng 1 ; Kong, Lingguang 1 ; Chu, Zhaohui 4 ; Ding, Xinhua 1 ;
作者机构： 1.Shandong Agr Univ, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
2.Shandong Agr Univ, Coll Plant Protect, Shandong Prov Key Lab Biol Vegetable Dis & Insect, Tai An 271018, Shandong, Peoples R China
3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Wuhan 430064, Hubei, Peoples R China
4.Wuhan Univ, Coll Life Sci, State Key Lab Hybrid Rice, Wuhan 430072, Peoples R China
5.Wuhan Univ, Hubei Hongshan Lab, Wuhan 430070, Hubei, Peoples R China
关键词： bacterial blight; bacterial leaf streak; defense-related; F3H; salicylic acid; TAL effector; Xanthomonas oryzae
期刊名称：NEW PHYTOLOGIST （ 影响因子：10.323； 五年影响因子：10.768 ）
ISSN： 0028-646X
年卷期： 2022 年 233 卷 4 期
页码：
收录情况： SCI
摘要： Transcription activator-like (TAL) effectors are major virulence factors secreted by the type III secretion systems of Xanthomonas oryzae pv. oryzicola (Xoc) and X. oryzae pv. oryzae (Xoo), causing bacterial leaf streak and bacterial blight, respectively, in rice. However, the knowledge of Xoc TAL effector function in promoting bacterial virulence remains limited. Here, we isolated the highly virulent Xoc strain HGA4 from the outbreak region of Huanggang (Hubei, China), which contains four TAL effectors not found in the Chinese model strain RS105. Among these, Tal2b was selected for introduction into RS105, which resulted in a longer lesion length than that in the control. Tal2b directly binds to the promoter region of the gene and activates the expression of OsF3H(03g), which encodes 2-oxoglutarate-dependent dioxygenase in rice. OsF3H(03g) negatively regulates salicylic acid (SA)-related defense by directly reducing SA, and it plays a positive role in susceptibility to both Xoc and Xoo in rice. OsF3H(03g) interacts with a uridine diphosphate-glycosyltransferase protein (OsUGT74H4), which positively regulates bacterial leaf streak susceptibility and may inactivate SA via glycosylation modification.
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