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. 2015 Jun 23;66(18):5507–5517. doi: 10.1093/jxb/erv307

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© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.

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 reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 5. — Root dynamics of crown axis and first order crown lateral roots in split-root rhizoslides subjected to either no nitrogen (N) or high (17mM) N after 15 d of growing without N. Crown axile root elongation determined by (A) tracking crown root tips with charge coupled device (CCD) cameras from -1 days after solution change (DASC) until 1 DASC, and (B) tracings of all the crown root tips over the whole experimental period. (C) Lateral root density on the crown root axis, and (D) elongation rates of these lateral roots. The dashed, red line indicates the time point of solution change, and the light grey squares night time. Values are means ±SE (n=2−13), asterisks indicate significant differences between the no N and high N roots (paired t-test with Bonferroni correction, P<0.05).