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. 2017 May 24;8:861. doi: 10.3389/fpls.2017.00861

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Copyright © 2017 Megguer, Fugate, Lafta, Ferrareze, Deckard, Campbell, Lulai and Finger.

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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Principal component analysis score plot of the changes in glycolytic pathway metabolite concentrations, ATP:ADP ratio, NADH:NAD⁺ ratio, and respiration rate (RESP) during 60 days storage. Ovals identify groups of metabolites that exhibit similarities in storage-related concentration changes. Ovals are gray where metabolites share similar changes in concentration, but have no obvious connection with each other. Roots were stored 10 days at 10°C and 90 ± 5% RH, then stored at 4°C, 90 ± 5% RH for 50 days. Principal components 1 and 2 account for 34 and 30%, respectively, of the variance in the data after standardization. Abbreviations used for metabolites are defined in Table 3. PCA loading plot is available in Supplementary Figure S2.