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. 2019 Feb 26;10:196. doi: 10.3389/fpls.2019.00196

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Copyright © 2019 Wang, Ma and Lin.

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) and the copyright owner(s) 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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Duplication events inferred from gene trees. Schematic representation of the minimum inferred AP2/ERF protein complement and gene duplication events in the last common ancestor of each major plant group. A numbered geometry represents the copy number in each AP2/ERF subfamily. The numbers in the top and left geometries represent the minimum inferred gene duplication events in the last common ancestor of each major angiosperm groups. Duplication events were inferred from gene trees and species tree.