Regulators of gene expression mostly or preferentially detected in Medicago truncatula nodules.

Are indicated the observed ratios between the level of expression in nodules and nitrogen-starved non-inoculated roots, as determined by Affymetrix chips or 16KPlus microarrays. The gene probes identified from the M. truncatula gene atlas were found by searching genes that were co-expressed with nodulation-specific gene probes (as described in Table S5). The expression pattern of these genes was classified using the gene atlas data i.e. without mutant nodules. Parentheses in the “ratio” columns indicate the condition of maximum expression. Asterisks indicate genes the expression of which appeared to be nodule-“specific” or highly preferential.