Fig. 8

Differential expression profiling of genes involved in proline and pectin biosynthesis, reactive oxygen species (ROS) production and scavenging in rapeseed plants between the control (Ctrl) and salinity conditions. a Proline biosynthesis pathway and differential expression profiling of the involving genes. OAT, ornithine aminotransferase; P5CR, pyrroline-5-carboxylate reductase; P5CS, pyrroline-5-carboxylate synthase; PDH, proline dehydrogenase. b Pectin biosynthesis pathway and differential expression profiling of the involving genes. GAE, UDP-glucuronate 4-epimerase; GAUT, galacturonosyl transferase; PMT, pectin methyltransferase. c Differential expression profiling of the genes involved in ROS production. RBOH, respiratory burst oxidase homologs. d General expression profiling of differentially expressed antioxidant enzyme genes. APX, ascorbate peroxidase; CAT, catalase; SOD, superoxide dismutase. For the transcriptome sequencing, uniform rapeseed plants after 7-day seed germination were cultivated under NaCl-free (control) for 10 days, and then they were transferred to the solution containing 200 mM NaCl for 12 h until sampling. The heatmaps show gene expression levels as indicated by the FPKMvalues. The differentially expressed genes presenting higher expression levels between the control (Ctrl) and salt (200 mM NaCl) conditions are denoted by asterisks