Tal2b targets and activates the expression of OsF3H 03g to hijack OsUGT74H4 and synergistically interfere with rice immunity.

Autor: Wu T; State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, China.; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China., Zhang H; State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, China.; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China., Yuan B; Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, 430064, China., Liu H; State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, China., Kong L; State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, China.; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China., Chu Z; State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.; Hubei Hongshan Laboratory, Wuhan University, Wuhan, Hubei, 430070, China., Ding X; State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, China.; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2022 Feb; Vol. 233 (4), pp. 1864-1880. Date of Electronic Publication: 2021 Dec 11.
DOI: 10.1111/nph.17877
Abstrakt: 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.
(© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.)
Databáze: MEDLINE
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