Fig. 1
From: Gating of miRNA movement at defined cell-cell interfaces governs their impact as positional signals
miRNA mobility is regulated independently from small protein movement. a–d Free GFP expressed in phloem companion cells (pSUC2:GFP) diffuses throughout a, c young sink leaves, but behaves cell autonomously in b, d mature source leaves. e–h In p35S:3xNLS-GFP seedlings not expressing miRGFP (no miRGFP), GFP is ubiquitously expressed. i–l miRGFP expressed in phloem companion cells (pSUC2:miRGFP) results in a non-cell autonomous pattern of GFP silencing that extends over 4–6 cells and appears more extensive on the abaxial (ab) side of k young as well as j, l mature leaves. ad, adaxial; ab, abaxial. Scale bars, 50 μm
