Fig. 7.

Representation of heatmaps viewed in MeV tool version 4.9.0 for expression patterns of identified stress-responsive NAC genes of the three legume crops. a Heatmap representation for expression of identified stress-responsive Ca_NAC genes across different tissues from germinating, seedling, vegetative, reproductive and senescence stages in chickpea. The expression data generated by RNA sequencing of plumule, radicle, shoot, leaf, bud, stem, nodule, root, etc., tissues at various stages were obtained from Cicer arietinum gene expression atlas (CaGEA) [35]. Yellow and blue color gradients indicate an increase or decrease, respectively, in transcript abundance represented in log₂ values. Ger-germinating; Sed-seedling; Veg-vegetative; Rep-reproductive; Sen-senescence. b Heatmap representation for expression of putative stress-responsive Cc_NAC genes in various tissues of pigeonpea. The expression data generated by Illumina sequencing of RNA-seq libraries prepared from shoot, leaf, stem, root, bud, nodule, embryo, seed, pod, etc., tissues across different stages were obtained from Cajanus cajan gene expression atlas (CcGEA) [36]. Yellow and blue color gradients indicate an increase or decrease, respectively, in transcript abundance represented in log₂ values. Veg-vegetative; Rep-reproductive; SAM-shoot apical meristem; Mat-mature. c Heatmap showing expression of predicted stress-responsive Ah_NAC genes in various tissues at different stages (germinal, seedling, vegetative reproductive, and senescence) of groundnut. The expression data generated by Illumina sequencing of RNA-seq libraries prepared from cotyledon, embryo, shoot, root, bud, nodule, embryo, seed, pod wall, etc., tissues at different stages were obtained from Arachis hypogea gene expression atlas (AhGEA) [37]. Yellow and blue color gradients indicate an increase or decrease, respectively, in transcript abundance represented in log₂ values. Veg-vegetative; Seeds_5-seeds after 5 days of planting; Seeds_25- seeds after 25 days of planting