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. 2019 Nov 29;19:529. doi: 10.1186/s12870-019-2146-7

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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.

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Fig. 1 — Untargeted metabolite profiling identifies the metabolites in the tested Taxus trees. a A picture of T. media, T. mairei and T. cuspidata under greenhouse condition. Fresh twigs were harvested from three cultivated Taxus species. b The PCA data of the samples from three different species. The red spots indicated the samples from T. cuspidata; the green spots indicated the samples from T. media; and the blue spots indicated the samples from T. mairei. c A heatmap of the metabolites grouped by Kyoto Encyclopedia of Genes and Genomes pathway found in the metabolomes of the three Taxus species (n = 15). The heatmap scale ranges from − 4 to + 4 on a log₂ scale