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. 2018 Sep 13;8:13746. doi: 10.1038/s41598-018-31700-2

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© The Author(s) 2018

Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Principal component analysis of UHPLC-MS data. PCA was performed on a subset of 52 major ions (with peak area >2.10⁶, fold >2 or <0.5 and p-value < 0.01). Quantifications were performed on the samples collected over three years. Codes correspond to genotype followed by the year of the experiment, for example “H14” corresponds to genotype H1 grown in summer 2014 in Angers under tunnel conditions.