Fig. 3

The expression profiles of differentially expressed genes in nodules inoculated with different strains of Sinorhizobium fredii carrying variants of NopI and NopP. R2 and R4 are two wildtype strains of S. fredii with different host compatibilities. R2p4, R2 with NopP from R4 swapped in; R2i4, R2 with NopI from R4 swapped in; R4p2, R4 with NopP from R2 swapped in; R4i2, R4 with NopI from R2 swapped in; rhcN, R2 T3SS mutant; nod, nodule; r1, r2, r3, replicates 1, 2 and 3. The expression levels of genes [Log2(FPKM + 1)] were presented in different colors according to the color key.