Fig. 6 in Acropetal and basipetal cardenolide transport in Erysimum cheiranthoides (wormseed wallflower)

Fig. 6. Grafting experiments show that shoot genotype determines root cardenolide phenotype. Seedlings were grafted at the cotyledon stage and cardenolides were measured in leaves and roots after three weeks. (A) Scion (leaf) cardenolides in grafted plants. (B) Stock (root) cardenolides in grafted plants. Different letters indicate P <0.05 differences for each cardenolide, ANOVA followed by Tukey's HSD test. Bars are mean ±s.d. of N =5–13 for shoot samples and 4–10 for root samples. wt = wildtype E. cheiranthoides var Elbtalaue; 454 = 454 cardenolide mutant line. Peak areas were normalized to an ouabain internal standard.