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. 2017 Mar 30;8:426. doi: 10.3389/fpls.2017.00426

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Copyright © 2017 Sun, Li, Shao, Yu and Ma.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Phylogenetic analyses of PHT genes in Arabidopsis thaliana (At), Oryza sativa (Os), Malus domestica (Md), and Populus trichocarpa (Ptr). Unrooted phylogenetic tree was constructed by NJ method, using MEGA6.0 program.