Triticum aestivum Transcriptome or Gene expression

This study employed a large-scale analysis of gene expression and phenotypic data from 96 genotypes representing the European winter wheat gene pool and experimental lines with broad spectrum of FHB resistance from highly resistant to highly susceptible. We aimed to connect transcriptional patterns with FHB resistant and susceptible phenotypes. Though the analyzed wheat lines were chosen to represent the full range of resistance to FHB from highly resistant to highly susceptible, most of the examined wheat lines shared similar defense responses. The analyzed wheat panel included a small subset of lines that descended from the highly resistant Sumai3 cultivar and contained the resistance alleles Fhb1 and Qfhs.ifa-5A. This allowed for the comparison of expression profiles of Fhb1 and Qfhs.ifa-5A resistance alleles in diverse genetic backgrounds. Compared to the more susceptible non-Sumai3 lines, the Sumai3-derivatives demonstrated higher constitutive expression of genes associated with cell wall and plant-type secondary cell wall biogenesis and higher constitutive and Fg-induced expression of genes involved in terpene metabolism. Gene expression analysis of the FHB QTL Qfhs.ifa-5A identified a constitutively expressed gene encoding a stress response NST1-like protein (TraesCS5A01G211300LC) as a candidate gene for FHB resistance.