Fig. 7

The putative model of regulatory networks associated with transport genes in the regulation of Cd translocation and compartmentation in pak choi roots. The apoplastic (1) and symplastic (2) pathways of Cd transport in pak choi roots; (3) The genes were identified as up-regulated in Baiyewuyueman compared with Kuishan’aijiaoheiye under Cd treatment by RNA-seq and RT-qPCR analysis; red arrows indicate the genes significantly up-regulated, brown arrows indicate the genes up-regulated, and green arrows indicate the genes down-regulated in Cd treatments compared with the controls by RNA-seq analysis. The localization of these genes was based on the data of Arabidopsis and rice (see Table 3)