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. 2016 Nov 16;7:1721. doi: 10.3389/fpls.2016.01721

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Copyright © 2016 Erland, Chattopadhyay, Jones and Saxena.

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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Chromatograms showing endogenous (A) tryptophan in tobacco shoot, (B) tryptamine in tobacco shoot, (C) serotonin in banana root, (D) N-acetylserotonin in potato shoot, and (E) melatonin in SJW shoot.