Fig. 5

The sec-dependent protein translocation system is identified in Ca. P. ziziphi. (A) The components of the Sec-pathway in Ca. P. ziziphi. A two-step Type Vb secretory pathway dependent on Sec is presented. The secreted proteins were first recognized by ffh and then bound to its receptor Ftsy. With the help of SecA, SecY and YidC, the secreted effector would successively transport in the periplasm and extracellular environment across the membrane [51,52,53]. (B) The expression of genes involved in the Sec pathway in healthy (HL) and diseased witches’ broom leaves (WBL). The data are mean ± SD of three biological replicates. Different letters between bars indicate significant differences at p < 0.05 (Duncan’s multiple range test). n.e., no expression