Figure 1.

NST3 and Its Promoter Showed Similar Activities to NST1 in Woody Tissues.

(A) and (B) Cross section of an inflorescence stem of Arabidopsis carrying the Pro_NST3:GUS construct (A) and the same sections under UV illumination (B). Secondary walls containing lignin emitted blue autofluorescence.

(C) to (F) Cross sections of a mature root hypocotyl of transgenic Arabidopsis carrying Pro_NST1:GUS (C) or Pro_NST3:GUS (E) and the same sections under UV illumination ([D] and [F]).

(G) to (J) Cross sections of a young root hypocotyl of transgenic Arabidopsis carrying Pro_NST1:GUS (G) or Pro_NST3:GUS (I) and the same sections under UV illumination ([H] and [J]).

(K) Upward curling rosette leaf of a 35S:NST3 plant.

(L) Ectopic secondary wall thickening in epidermal cells of rosette leaves, as visualized under UV illumination.

Bars = 100 μm, except in (K), where the bar = 5 mm.