Fig. 4From: Silencing of PhLA, a CIN-TCP gene, causes defected petal conical epidermal cell formation and results in reflexed corolla lobes in petuniaEffects of silencing PhLA on petal epidermal cells. a SEM micrograph of petal epidermal cells from white flowers of TRV chs infected plants compared to those of TRV chs/la-2 infected plants. Five regions (i–v) on a lobe from both groups of flowers were examined. A petal segment was dissected to illustrate the five regions. Scar bars: 50 μm. b Cell size comparison between petal lobes infected with TRV chs and those infected with TRV chs/la-2 at the regions along mid-ribs (i–iii). c Cell size comparison between petal lobes infected with TRV chs and those infected with TRV chs/la-2 at the regions on margins (iv–v). Blue bars in (b, c) indicate the cell sizes from the TRV chs group, and purple bars indicate those from the TRV chs/la-2 groupBack to article page