Figure 1.

Labeling the bundle sheath of leaves of Arabidopsis thaliana using luciferase (LUC) and green fluorescent protein (GFP) reporter genes, respectively, which were driven by the promoter of the gene encoding the P‐subunit of glycine decarboxylase of the C₄ plant Flaveria trinervia (pGLDPA_{F t}).

(a) The constructs used to generate the pGLDPA _Ft−LUC and pGLDPA _Ft−GFP reference lines. (b) Luminescence of a leaf of the LUC reference line. (c) GFP fluorescence of a leaf of the GFP reference line. (d) Longitudinal section of veins of the reference line showing GFP fluorescence localized in the chloroplasts (arrowheads) of the bundle sheath and vasculature.