Fig. 3

Morphological observation of vascular bundles in stem tissues of myb103 mutant and RNAi transgenic line. A Examination of GUS activity by expressing proOsMYB103L:GUS. B View of vascular bundles development and distribution; the stem slices obtained with 100 μm thickness, and imaged using a Nikon Eclipse Ni-U microscope under bright field. C S4B cellulose staining; the stem slices obtained with 100 μm thickness, stained with S4B (Direct Red 23, Sigma), and imaged using a Nikon Eclipse Ni-U microscope under 530–560 nm excitation and 620–660 nm emission