pMdhpRNA277-GD Is Induced by ALT1 Infection in Transgenic Apple, but pMdhpRNA277-HF Is Not.
(A) Schematic of the T1 construct used to stably overexpress MdhpRNA277 under the control of the pMdhpRNA277-GD promoter in GL-3 lines.
(B) RNA gel blot analysis of mdm-siR277-1/2 content at 48 HPI in GL-3 transgenic lines GL1-1(-8) compared with CK.
(C) Disease symptoms in 4-week-old GL1-1(-8) lines at 48 HPI.
(D) Disease rates in 4-week-old GL1-1(-8) lines at 48 HPI.
(E) Schematic of construct used to stably overexpress MdhpRNA277 under the control of the pMdhpRNA277-HF promoter in the GL-3 lines.
(F) RNA gel blot analysis of mdm-siR277-1/2 content at 48 HPI in GL-3 transgenic lines GL2-1(-8) compared with CK.
(G) Disease symptoms in 4-week-old GL2-1(-8) lines at 48 HPI.
(H) Disease rates in 4-week-old GL2-1(-8) lines at 48 HPI. Spore inoculum concentration: 2 × 105 cfu/mL. Spore growth was measured at 6 DPI. Error bars represent standard deviations calculated from three biological replicates (separate biological material) were performed for each treatment. Student’s t test: **P < 0.01.