Academic Journal
Genome-wide association analysis reveals a novel pathway mediated by a dual-TIR domain protein for pathogen resistance in cotton
| العنوان: | Genome-wide association analysis reveals a novel pathway mediated by a dual-TIR domain protein for pathogen resistance in cotton |
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| المؤلفون: | Yihao Zhang, Yaning Zhang, Xiaoyang Ge, Yuan Yuan, Yuying Jin, Ye Wang, Lihong Zhao, Xiao Han, Wei Hu, Lan Yang, Chenxu Gao, Xi Wei, Fuguang Li, Zhaoen Yang |
| المصدر: | Genome Biology, Vol 24, Iss 1, Pp 1-31 (2023) |
| بيانات النشر: | BMC, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Biology (General) LCC:Genetics |
| مصطلحات موضوعية: | Verticillium fungi, GWAS, Introgression, NLR receptors, Autoactivity, Self-association, Biology (General), QH301-705.5, Genetics, QH426-470 |
| الوصف: | Abstract Background Verticillium wilt is one of the most devasting diseases for many plants, leading to global economic loss. Cotton is known to be vulnerable to its fungal pathogen, Verticillium dahliae, yet the related genetic mechanism remains unknown. Results By genome-wide association studies of 419 accessions of the upland cotton, Gossypium hirsutum, we identify ten loci that are associated with resistance against Verticillium wilt. Among these loci, SHZDI1/SHZDP2/AYDP1 from chromosome A10 is located on a fragment introgressed from Gossypium arboreum. We characterize a large cluster of Toll/interleukin 1 (TIR) nucleotide-binding leucine-rich repeat receptors in this fragment. We then identify a dual-TIR domain gene from this cluster, GhRVD1, which triggers an effector-independent cell death and is induced by Verticillium dahliae. We confirm that GhRVD1 is one of the causal gene for SHZDI1. Allelic variation in the TIR domain attenuates GhRVD1-mediated resistance against Verticillium dahliae. Homodimerization between TIR1-TIR2 mediates rapid immune response, while disruption of its αD- and αE-helices interface eliminates the autoactivity and self-association of TIR1-TIR2. We further demonstrate that GhTIRP1 inhibits the autoactivity and self-association of TIR1-TIR2 by competing for binding to them, thereby preventing the resistance to Verticillium dahliae. Conclusions We propose the first working model for TIRP1 involved self-association and autoactivity of dual-TIR domain proteins that confer compromised pathogen resistance of dual-TIR domain proteins in plants. The findings reveal a novel mechanism on Verticillium dahliae resistance and provide genetic basis for breeding in future. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1474-760X |
| Relation: | https://doaj.org/toc/1474-760X |
| DOI: | 10.1186/s13059-023-02950-9 |
| URL الوصول: | https://doaj.org/article/32154b0c1d7c449aa0cf8e6670a56b10 |
| رقم الانضمام: | edsdoj.32154b0c1d7c449aa0cf8e6670a56b10 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1474760X |
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| DOI: | 10.1186/s13059-023-02950-9 |