Genome-wide transcriptional responses of Fusarium graminearum to plant cell wall substrates.

We report a genome-wide transcriptomic study of Fusarium graminearum grown on four different substrates based on plant cell wall components. About 5% of the genes were differentially expressed in at least one condition. Analysis of upregulated cell wall-degrading enzymes highlights a sharp growth medium-specific adaptation process. In particular, the nature of the polysaccharides available for fungal growth induced a specific transcriptional response aiming at the targeted enzymatic degradation of the given polysaccharides.