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. 2022 Feb 15;13:826158. doi: 10.3389/fpls.2022.826158

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Copyright © 2022 Torre, Sebastiani, Burbui, Pecori, Pepori, Passeri, Ghelardini, Selvaggi and Santini.

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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Phylogenetic tree of Ulmus laevis individuals calculated using BEAST software. The tree includes 54 U. laevis samples from five populations (indicated by different colors: blue = Italy, dark green = France_SW, light green = France_NE, red = Serbia, pink = Spain) and 13 outgroups species within Ulmaceae family: Ulmus americana (NC_044473.1); Ulmus elongata (NC_046061.1); Ulmus macrocarpa (NC_032720.1); Ulmus laciniata (MT742253.1); Ulmus davidiana (NC_032718.1); Ulmus pumila (MW279236.1); Ulmus bergmanniana (NC_057601.1); Ulmus gaussenii (NC_037840.1); Ulmus chenmoui (NC_037758.1); Ulmus parvifolia (MT701612.1); Zelkova serrata (NC_040958.1); Zelkova schneideriana (NC_041074.1); and Hydrangea davidii (MK070168.1). The stars on nodes indicate the five points of age constraints on divergent time. Time axis shows the age in Mya. Geological time scale visualized with the R strap package.