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. 2017 Mar 7;8:256. doi: 10.3389/fpls.2017.00256

Figure 4.

Figure 4

Auxin distribution in rice roots. Auxin distributions in radicles of DR5-VENUS (A) and DII-VENUS (B) transgenic lines. Expression profiles of DR5-VENUS and DII-VENUS are fully complementary. Auxin maxima is visible in QC, columella cells, initials cells, X, and Epi while virtually absent from cortex, ground tissues and lateral root cap. In developing lateral roots (C,D), auxin accumulates inside QC, root cap and in flanking zone of lateral root. During early LRP formation (E,F), auxin is visible inside developing lateral root meristem. Transverse sections show auxin localization at median planes (G,I) and nearby layers (H,J) of lateral root primodium ready to emerge from primary root. Auxin is visible in phloem (p) and again in pQC, prc and lacking inside lateral root apical meristem. Epi, epidermis; X, central metaxylem; QC, quiescent center; pQC, putative quiescent center; prc, putative root cap; p, phloem. Asterisk indicates no signal inside lateral root primodium. Red channel, propidium iodide; Green channel, VENUS. Scale bar: 25 μm.