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. 2015 Sep 4;4(10):1229–1236. doi: 10.1242/bio.013128

Fig. 1.

Fig. 1.

CYCD3;1 is expressed in the root cambium and regulates secondary growth. (A) Transverse sections of roots taken immediately below the hypocotyl at time points shown. Arrowheads indicate recently formed cell walls. (B) Expression patterns of CYCD3 promoter:GUS reporters. pCYCD3;1 drives GUS expression in the cambium and the pericycle (left panel), whereas pCYCD3;2 and pCYCD3;3 drive GUS expression in the cambium and phloem (middle and right panel; red arrows). (C) Stele cross-sectional area in 17 DAG Ler and cycd3;1 roots. ****P<0.0001; Error bars represent s.e.m. (D) Transverse sections of roots in C. Scale bars: 100 µm.