Transcriptomic Analysis Revealed Key Defense Genes and Signaling Pathways Mediated by the Arabidopsis thaliana Gene SAD2 in Response to Infection with Pseudomonas syringae pv. Tomato DC3000
文献类型： 外文期刊
作者： Li, Sha 1 ; Shi, Tiantian 2 ; Lyu, Mingjie 3 ; Wang, Rui 2 ; Xu, Andi 2 ; Chen, Luoying 2 ; Luo, Rong 2 ; Sun, Yinglu 2 ; Guo, Xiaoying 4 ; Liu, Jun 2 ; Wang, Huan 1 ; Gao, Ying 2 ;
作者机构： 1.Chinese Acad Agr Sci CAAS, Biotechnol Res Inst, Beijing 100081, Peoples R China
2.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improve, Beijing 100081, Peoples R China
3.Tianjin Acad Agr Sci, Inst Germplasm Resources & Biotechnol, Tianjin 300112, Peoples R China
4.Tianjin Agr Univ, Coll Hort & Landscape Architecture, Tianjin 300392, Peoples R China
5.Chengdu Natl Agr Sci & Technol Ctr, Chengdu 610213, Peoples R China
关键词： Arabidopsis; SAD2; Pst DC3000; pathogen defense; RNA-Seq; DEG
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN：
年卷期： 2023 年 24 卷 4 期
页码：
收录情况： SCI
摘要： Nucleocytoplasmic transport receptors play key roles in the nuclear translocation of disease resistance proteins, but the associated mechanisms remain unclear. The Arabidopsis thaliana gene SAD2 encodes an importin beta-like protein. A transgenic Arabidopsis line overexpressing SAD2 (OESAD2/Col-0) showed obvious resistance to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) compared to the wild type (Col-0), but the knockout mutant sad2-5 was susceptible. Transcriptomic analysis was then performed on Col-0, OESAD2/Col-0, and sad2-5 leaves at 0, 1, 2, and 3 days post-inoculation with Pst DC3000. A total of 1825 differentially expressed genes (DEGs) were identified as putative biotic stress defense genes regulated by SAD2, 45 of which overlapped between the SAD2 knockout and overexpression datasets. Gene Ontology (GO) analysis indicated that the DEGs were broadly involved in single-organism cellular metabolic processes and in response to stimulatory stress. Kyoto Encyclopedia of Genes and Genomes (KEGG) biochemical pathway analysis revealed that many of the DEGs were associated with the biosynthesis of flavonoids and other specialized metabolites. Transcription factor analysis showed that a large number of ERF/AP2, MYB, and bHLH transcription factors were involved in SAD2-mediated plant disease resistance. These results provide a basis for future exploration of the molecular mechanisms associated with SAD2-mediated disease resistance and establish a set of key candidate disease resistance genes.
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