Fig. 6

Microarray-based expression pattern of DEGs regulated by MT or commonly regulated with NAA in organs. Data were sourced from Bio-Analytic Resource (BAR). Age of Arabidopsis plants was 7 days cotyledon (7 days), hypocotyl (7 days), root (17 days), rosette (17 days) [71]. Arrows indicate trend of regulation (up or down) in our RNA-Seq data in response to melatonin (100 μM) (black arrows) and/or NAA (red arrows). The heat map represents hierarchical clustering of log2 transformed fold change of signal values as compared to control. All the values have been standardized prior to hierarchical clustering by z-scoring method in function ‘scale’ in R (version 3.5.2). The colour key and histogram represent the scale for relative expression with trace levels. Blue colour represents low expression levels, light represent medium expression and orange represents highest expression level. Different clusters are denoted by I and II. Boxed in red (a and b) are the DEGs forming part of each cluster