| Description |
In order to further understand the important role of the SA pathway in potato disease resistance and to identify key genes involved in SA signaling, 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 unigenes were differentially expressed including many transcription factors (TFs, such as WRKYs, ERFs) and signal transduction genes, in response to SA. 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 the metabolic pathway of SD20 in response to SA. Further analysis determined that many plant defense signal-related genes that regulate defense response have protein serine/threonine kinase activity or that are involved in plant-pathogen interaction, were significantly enriched, such as WRKY TF, ethylene-responsive TF, MAPKs, LRR receptor-like serine/threonine-protein kinase, and NBS-LRR protein. |
