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Dissection of the Plant Hormone Signal Transduction Network in Late Blight-Resistant Potato Genotype SD20 and Prediction of Key Resistance Genes

文献类型： 外文期刊

作者： Yan, Wenyuan 1 ; Jian, Yinqiao 1 ; Duan, Shaoguang 1 ; Guo, Xiao 2 ; Hu, Jun 1 ; Yang, Xiaohui 2 ; Li, Guangcun 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Minist Agr & Rural Affairs, Key Lab Biol & Genet Improvement Tuber & Root Cro, Beijing 100081, Peoples R China

2.Shandong Acad Agr Sci, Minist Agr & Rural Affairs,Natl Vegetable Improve, Mol Biol Key Lab Shandong Facil Vegetable,Vegetab, Huang Huai Hai Reg Sci Observat & Expt Stn Vegeta, Jinan 250100, Peoples R China

关键词： disease resistance and defense; hormone; late blight; potato

期刊名称：PHYTOPATHOLOGY （ 影响因子：3.2； 五年影响因子：3.9 ）

ISSN： 0031-949X

年卷期： 2023 年 113 卷 3 期

页码：

收录情况： SCI

摘要： Hormones play an important role in plant disease resistance and defense. Transcriptome data of late blight-resistant potato genotype SD20 treated by ethylene (ET), jasmonate (JA), salicylic acid (SA), and Phytophthora infestans CN152 was analyzed to assess the role of the ET/JA/SA regulatory network in plant disease resistance and defense and predict key resistant genes. The results show that there was significant crossover of differentially expressed genes among all treatments, and common and specific plant disease interaction genes for the ET, JA, and SA treatments were differentially expressed in the CN152 treatment. The resistance and defense genes of the potato genotype SD20 could be induced to regulate metabolic and hormone signaling pathways by alternative splicing in all treatments. Further analysis found that JA and ET pathways can work together synergistically. JA/ET and SA pathways antagonize each other to initiate the expression of calmodulin-domain protein kinases and calmodulin/calmodulin-like and RPM1-interacting protein 4 genes, and they activate HSP-mediated hypersensitive response and defense-related genes. Meanwhile, nine defense genes, including wound-responsive AP2-like factor, glutathione-s-transferase, serine/threonine-protein kinase BRI1, and Avr9/Cf-9 rapidly elicited protein genes, were obtained using weighted gene coexpression network analysis, which provided reliable targets for functional verification. This study provides a theoretical reference for the comprehensive application of plant hormones to improve resistance to potato late blight disease.

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