<i>D. glomerata</i> homologs of genes encoding components of the common symbiosis pathway or proteins involved in infection thread growth in legumes (legume data from [34], [36], [39], [40], [42], [43], [44], [77], [78], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88]).

qPCRs were performed based on RNA from nodules and roots of non-inoculated plants. The last column refers to the expression in uninfected legume roots vs. mature legume nodules. If expression levels in roots and nodules differed by a factor of 2 or more, expression is described as nodule-enhanced or root-enhanced, respectively. If expression levels in both organs differed by a factor of 100 or more, expression is described as root- or nodule-specific, respectively. When more than one D. glomerata homolog of a legume gene is listed, the D. glomerata contig with the strongest homology between its implicated protein and the legume protein(s) is listed first. Homologies between the legume proteins and the D. glomerata proteins are given in Table S2. n.d. – not determined.