Fig. 3

Gene expression of the main transcription factor families. Genes where identified with their Interpro domains. Genes with a mean of more than 10 reads in mycorrhizal and/or control samples where considered as expressed in the roots and are shown in grey. AM-induced genes (at least 5-fold induction) are shown in red. The remaining black portion of the bars represents the gene members that are not expressed in roots. Numbers on top of the bars indicate the total number of genes per category