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Exogenous SA Initiated Defense Response and Multi-signaling Pathway in Tetraploid Potato SD20

文献类型： 外文期刊

作者： Zheng, Jiayi 1 ; Yang, Yu 2 ; Guo, Xiao 2 ; Jin, Liping 1 ; Xiong, Xingyao 1 ; Yang, Xiaohui 2 ; Li, Guangcun 1 ;

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

2.Shandong Acad Agr Sci, Natl Vegetable Improvement Ctr,Shandong Sub Ctr,H, Inst Vegetables & Flowers, Minist Agr & Rural Affairs Mol Biol,Key Lab Shand, Jinan 250100, Peoples R China

3.Hunan Agr Univ, Coll Hort & Landscape, Hunan Prov Engn Res Ctr Potatoes, Changsha 410128, Peoples R China

关键词： potato; salicylic acid; transcriptome; pathway; defense response

期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：3.032； ）

ISSN： 2095-9885

年卷期： 2020 年 6 卷 2 期

页码：

收录情况： SCI

摘要： Salicylic acid (SA) is an important signaling substance that plays an important role in plant growth, development and disease resistance. In order to further understand the role of the SA pathway in potato disease resistance and identify SA signaling key genes, gene expression profiling of the late blight resistance genotype SD20 was performed under exogenous SA application. A total of 28 572 unigenes were assembled, of which 4 564 were differentially expressed. Analysis of differentially expressed genes (DEGs) showed that multiple signaling pathways such as SA, jasmonic acid, ethylene, abscisic acid, auxin, and brassinolide were involved in response to exogenous SA. Many plant defense signalrelated genes involved in protein serine/threonine kinase activity and plant-pathogen interaction, were significantly enriched. These were consistent with the interaction results of SD20 and Phytophthora infestans in our previous study, indicating that exogenous SA stimulated the resistance response and initiated a similar defense pathway compared to pathogen infection in SD20, which confirmed crosstalk of the SA signaling pathway with a pathogen-induced disease resistance signal pathway in plant. Moreover, transcriptome analysis revealed that ROS1 was positively regulated by SA in potato for the first time. SA-induced gene expression profiling provides insight into SA signaling and its mechanisms in disease defense systems.

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[1]Exogenous SA Initiated Defense Response and Multi-signaling Pathway in Tetraploid Potato SD20. Zheng, Jiayi,Jin, Liping,Xiong, Xingyao,Li, Guangcun,Yang, Yu,Guo, Xiao,Yang, Xiaohui,Yang, Yu,Xiong, Xingyao. 2020

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