Ubiquitin-dependent protein catabolism and cell death. A. The heatmap shows levels of transcription abundance from genes involved in ubiquitin-dependent protein catabolism during microsclerotia formation (stages MS1-MS4). Levels of expression are represented as the log2 ratio of transcript abundance as compared to the CO stage. Genes showing similar expression patterns have been clustered. B. Two ubiquitin-like protein (UBL) modification pathways in V. dahliae and expression levels of genes encoding UBL proteins. For each protein, the bar graph shows abundance of transcripts encoding this protein in CO, GC and microsclerotia formation (MS1-MS4, black bars left to right). C. Heatmap of genes encoding a heterokaryon incompatibility protein (HET) domain.