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. 2015 Jan 1;142(1):151–161. doi: 10.1242/dev.111013

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© 2015. Published by The Company of Biologists Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Fig. 7. — CTR1 is epistatic over AIP1-2. (A-C) Root-hair forming cells of five-day-old (A) ctr1^btk, (B) aip1.2-1 and (C) aip1.2-1;ctr1^btk seedlings. Arrowheads, apical and basal ends of cells; asterisks, root hair initiation sites. Scale bars: 50 µm. (D) Quantitative analysis of relative root hair-positioning phenotypes of ctr1^btk and aip1.2-1 compared with aip1.2-1;ctr1^btk. n=150 cells from 30 roots per genotype. Significance P values were determined by KS test. **P=0.000 ctr1^btk versus aip1.2-1; P=0.882 ctr1^btk versus aip1.2-1;ctr1^btk; **P=0.000 aip1.2-1 versus aip1.2-1;ctr1^btk. (E) Quantitative analysis of trichoblast cell length in aip1.2-1, ctr1^btk and aip1.2-1;ctr1^btk. Average cell length from n=150 cells from 30 roots. Data are means±s.d. from three independent experiments, each employing 50 cells from ten roots. Statistical differences determined by two-tailed, unpaired t-test with equal variance and significance level P<0.05 are indicated as **P<0.01; n=3.