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. 2020 Mar 23;21:255. doi: 10.1186/s12864-020-6650-9

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© The Author(s). 2020

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. 1 — Whole-genome SNP-based parsimony tree of 47 ST277 P. aeruginosa isolates and the reference genome PAO1 generated by kSNP3.0. The branch lengths are expressed in terms of changes per number of SNPs. The tree was visualized using Dendroscope. Labels in the internal nodes (red) are the number of SNPs that are exclusively shared by the descendants of that node. The panel shows the presence (black) and absence (white) of the genetic determinants surveyed. The purple bars represent an additional mutation in the gyrA gene (D87N). BR: Brazil, CH: China, MX: Mexico, USA: United Stated of America, UK: United Kingdom, BEL: Belgium, THA: Thailand, Hum: Human, Env: Environmental, −: not available