Fig. 11

Representative images of the shoots and root systems of pot-grown transgenic switchgrass overexpressing the PvMYB4 gene under the control of each of the three green tissue-specific promoters. The PvMYB4 expression levels under the control of the ZmUbi1 promoter in transgenic switchgrass were low in line 6, moderate in line 8, and high in line 1 [12], and used as the controls. Plants were grown in 4-l pots and images were taken at the R1 growth stage. N.T., non-transgenic switchgrass