Additional file 1: of A detailed expression map of the PIN1 auxin transporter in Arabidopsis thaliana root

The details of PIN expression in the root tip, visualized in 3D. The longitudinal section is above. Five transverse section made at different lengths from the QC are shown below. The signal disappears in the upper third of the meristematic zone (MZ) in the protophloem (pph) and protophloem-pole pericycle. In the distal part of elongation zone protoxylem (px), cells still express PIN1. Bars = 50 μm. (TIF 13846 kb)