Fig 6. Expression profiles of the PHT1 family genes in leaves and roots of Brassica napus under auxin (IAA) and cytokinin (CTK) treatments.

Seedlings of 14 days old were treated with Hoagland’s solution containing 100 μM IAA and 100 μM CTK for six days, respectively. The fully expanded leaf and roots were sampled separately for RNA extraction at harvest. L, leaf. R, roots. CK, full strength Hoagland’s solution. The color scale is shown on the right side. Gray box indicates data undetected. Heat map of gene expression profiles was generated using pheatmap package in R after data normalization.