Ultrastructural observation of abnormal post-Golgi trafficking in RNAi pollen tubes.

<p><b>A, C, E</b>: control (wild-type pollen). <b>B, D, F</b>: RNAi pollen tubes. <b>A, B</b>: Tip region of pollen tubes shows more small vesicles at the tip region I in control than in RNAi transgenic pollen tubes. Bar = 3 µm. <b>C, D:</b> more bigger vesicles at region II in RNAi transgenic than in control. Bar = 400 µm. E, F: Showing the volume of putative MVB in wild-type (E) and RNAi pollen tubes (F). Notice the comparative diameter of the putative PVCs/MVBs and adjacent Golgi bodies. Bar = 50 nm in (E); Bar = 100 nm in (F). cw: cell wall; g: Golgi bodies. M: putative PVCs/MVBs; V: vesicle.