Fig. 1From: Ethylene responsive transcription factor ERF109 retards PCD and improves salt tolerance in plantSilencing of the PDS gene to cause photo-bleaching (a) and over-expression of GFP (b) in tobacco (N. benthamiana) plants to prove the incidence of VIGS. Photographs were taken 21Â days after infiltration. Arrows indicate the newly developed leaves with gene knocked down, e.g., PDS (a) or expressed, e.g., GFP (b) via VIGSBack to article page