Transcriptome dynamics Associated with Resistance and Susceptibility against Fusarium Head Blight in Four Wheat Genotypes. Transcriptome dynamics Associated with Resistance and Susceptibility against Fusarium Head Blight in Four Wheat Genotypes

We report differentially expressed genes in four wheat genotypes, Nyubai, Wuhan 1 and their progeny line HC374, shaw associated with resistance and susceptibility against Fusarium Head Blight (FHB). Our result indicates an early up-regulation of LRR-RKs distinct between susceptible and resistant genotypes; subsequently, different sets of genes associated with defense response were up-regulated. Differences in expression profiles among the resistant genotypes indicate genotype specific defense mechanisms. This study also showed a greater resemblance in transcriptomics of HC374 to Nyubai, consistent with their sharing of two type II FHB resistant QTLs on 3BS and 5AS, than to Wuhan 1 which carries one QTL on 2DL in common with HC374. Overall design: The four genotypes were subjected to challenge by the pathogenic fungus Fusarium graminearum and water mock treatment as a control