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. 2017 Sep 7;8:1547. doi: 10.3389/fpls.2017.01547

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Copyright © 2017 Wu, Cai, Zhang and Zeng.

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) or licensor 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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The corresponding loading plots of metabolite profiling data from fraction I (organic acid, A), fraction II (amino acids and amines, B), and fraction III (sugars and sugar alcohols, C) between PC1 and PC2.