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A phase-separated protein hub modulates resistance to Fusarium head blight in wheat

文献类型: 外文期刊

作者: He, Yi 1 ; Yang, Xiujuan 3 ; Xia, Xiaobo 4 ; Wang, Yuhua 1 ; Dong, Yifan 1 ; Wu, Lei 2 ; Jiang, Peng 2 ; Zhang, Xu 2 ; Jiang, Cong 4 ; Ma, Hongxiang 5 ; Ma, Wujun 6 ; Liu, Cong 7 ; Whitford, Ryan 8 ; Tucker, Matthew R. 3 ; Zhang, Zhengguang 1 ; Li, Gang 1 ;

作者机构: 1.Nanjing Agr Univ, Coll Plant Protect, Dept Plant Pathol, Nanjing 210095, Peoples R China

2.Jiangsu Acad Sci, Key Lab Germplasm Innovat Downstream Huaihe River, Minist Agr & Rural Affairs, CIMMYT JAAS Joint Ctr Wheat Dis,Res Ctr Wheat Scab, Nanjing 210014, Peoples R China

3.Univ Adelaide, Waite Res Inst, Sch Agr Food & Wine, Urrbrae, SA 5064, Australia

4.Northwest A&F Univ, Coll Plant Protect, Yangling 712100, Peoples R China

5.Yangzhou Univ, Coll Agr, Yangzhou 225009, Peoples R China

6.Qingdao Agr Univ, Coll Agron, Qingdao 266000, Peoples R China

7.Chinese Acad Sci, Interdisciplinary Res Ctr Biol & Chem, Shanghai Inst Organ Chem, Shanghai 201210, Peoples R China

8.Murdoch Univ, Food Futures Inst, Ctr Crop & Food Innovat CCFI, State Agr Biotechnol Ctr SABC, Murdoch, WA 6150, Australia

期刊名称:CELL HOST & MICROBE ( 影响因子:20.6; 五年影响因子:22.1 )

ISSN: 1931-3128

年卷期: 2024 年 32 卷 5 期

页码:

收录情况: SCI

摘要: Fusarium head blight (FHB) is a devastating wheat disease. Fhb1 , the most widely applied genetic locus for FHB resistance, is conferred by TaHRC of an unknown mode of action. Here, we show that TaHRC alleles distinctly drive liquid -liquid phase separation (LLPS) within a proteinaceous complex, determining FHB susceptibility or resistance. TaHRC-S (susceptible) exhibits stronger LLPS ability than TaHRC-R (resistant), and this distinction is further intensified by fungal mycotoxin deoxynivalenol, leading to opposing FHB symptoms. TaHRC recruits a protein class with intrinsic LLPS potentials, referred to as an "HRC-containing hub."TaHRC-S drives condensation of hub components, while TaHRC-R comparatively suppresses hub condensate formation. The function of TaSR45a splicing factor, a hub member, depends on TaHRC-driven condensate state, which in turn differentially directs alternative splicing, switching between susceptibility and resistance to wheat FHB. These findings reveal a mechanism for FHB spread within a spike and shed light on the roles of complex condensates in controlling plant disease.

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