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. 2014 Dec 9;26(12):4843–4861. doi: 10.1105/tpc.114.128322

Figure 4.

Figure 4.

BLH6 and KNAT7 Promoters Direct GUS Expression in the Interfascicular Fibers and Xylem.

(A) Stem cross section of a representative ProBLH6:GUS line showing GUS expression in interfascicular fibers and vascular bundles.

(B) Stem cross section of a representative ProKNAT7:KNAT7-GUS line showing GUS expression in interfascicular fibers and vascular bundles.

(C) Higher magnification image of the representative ProBLH6:GUS line showing the expression pattern in the cambial region and metaxylem of vascular bundles.

(D) Higher magnification image of the representative ProKNAT7:KNAT7-GUS line showing the expression pattern in the cambial region and metaxylem of vascular bundles.

Hand cross sections were taken from the bottom 5 cm of inflorescence stems of 6-week-old plants. C, cambial region; IF, interfascicular fibers; MX, metaxylem; P, phloem; X, xylem. Bars = 100 μm in (A) and (C) and 50 μm in (B) and (D).