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Characterization of a Small Cysteine-Rich Secreted Effector, TcSCP_9014, in Tilletia controversa

文献类型： 外文期刊

作者： Du, Zhenzhen 1 ; Weng, Han 1 ; Jia, Huanyu 1 ; Zhang, Bin 1 ; Wu, Boming 2 ; Chen, Wanquan 1 ; Liu, Taiguo 1 ; Gao, Li 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China

2.China Agr Univ, Coll Plant Protect, Beijing 100193, Peoples R China

3.Xinjiang Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Crop Northweste, Sci Observing & Expt Stn Korla,Minist China,Minis, Urumqi 830091, Peoples R China

关键词： wheat dwarf bunt; Tilletia controversa; small cysteine-rich secreted proteins; virulence effectors; plant immunity

期刊名称：PLANTS-BASEL （ 影响因子：4.0； 五年影响因子：4.4 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 11 期

页码：

收录情况： SCI

摘要： Tilletia controversa J. G. K & uuml;hn is the causal agent of wheat dwarf bunt (DB), a destructive disease causing tremendous economic losses. Small cysteine-rich secreted proteins (SCPs) of plant fungi are crucial in modulating host immunity and promoting infection. Little is known about the virulence effectors of T. controversa. Here, we characterized TcSCP_9014, a novel effector of SCPs, in T. controversa which suppressed programmed cell death triggered by BAX without relying on its signal peptide (SP). The SP in the N-terminus of TcSCP_9014 was functional in the secretory process. Live-cell imaging in the epidermal cells of Nicothiana benthamiana suggested that TcSCP_9014 localized to the plasma membrane, cytoplasm, and nucleus. Furthermore, yeast cDNA library screening was performed to obtain the interacting proteins in wheat. Yeast two-hybrid and BiFC assays were applied to validate the interaction of TcSCP_9014 with TaMTAN and TaGAPDH. Our work revealed that the novel effector TcSCP_9014 is vital in modulating plant immunity, which opens up new avenues for plant-pathogen interactions in the T. controversa infection process.

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