Fig. 3

Differential expression data of 139 GmNAC genes in V6 and R2 leaves under drought stress. Genes shown are either up-regulated or down-regulated at least by two-fold; the colors indicate expression intensity (red, high expression; green, low expression; grey, no expression). 66 K Affymetrix Soybean Array GeneChip source: Dung Tien Le et al. [41] see Additional file 7