Fig. 1.

Graft-transmissible mRNA silencing in WT Arabidopsis. (a) Schematic representation of seedling grafting and the transgene constructs used to produce the target and silencer (S1, S2, and S3) plant lines. (b) Phenotype of WT target scion grafted onto S2 rootstocks at 18 and 23 days after grafting. (c) Small RNA analysis from silencers (S1 and S2) and from target scions grafted onto S1 and S2 rootstocks, using GF and P DNA probes; identical results were obtained by using sense and antisense riboprobes (data not shown).