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. 2022 Apr 20;22:206. doi: 10.1186/s12870-022-03580-2

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Phylogenetic relationship of PHD-finger genes and characteristics of the 14 subgroups. A The phylogenetic tree of PHD-finger genes in the five plant species is depicted. The colored bars outside of the tree represent divided subgroups. Different colors at branch tips indicate different species. Known functional genes are labeled on the outer edge. B The numbers of PHD-finger genes in each subgroup are shown in a heatmap. C Major integrated domains in subgroups. Colored bars indicate groups with more than 75% integrated domains. Each bar is colored with the same colors of subgroups in phylogenetic tree. Pfam IDs of the main integrated domain are labeled in the bar plot