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. 2012 Feb 16;7(2):e31149. doi: 10.1371/journal.pone.0031149

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Hu et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The schematic diagram of genome-wide chromosome organization arisen from the salicoid genome duplication event in Populus was accomplished based on duplication coordinates from the Populus genome assembly v2.1. Segmental duplicated blocks are indicated with the same colors. The duplicated paralogous pairs of HD-ZIP are connected with dotted lines. Blue triangles indicate HD-ZIPs located on duplicated segments with the corresponding member lost. Red circles represent HD-ZIPs located out of any duplicated regions. Scale represents a 5 Mb chromosomal distance.