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. 2015 Aug 11;6:601. doi: 10.3389/fpls.2015.00601

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Copyright © 2015 Hasan, Ahammed, Yin, Shi, Xia, Zhou, Yu and Zhou.

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 accumulation of cadmium in tomato plants and its subcellular distribution following 14 days long Cd stress as influenced by melatonin treatments. (A) Cd concentrations in tomato roots and leaves. (B) The in situ detection of Cd in tomato roots and leaves using a dithizone staining-based histochemical method. (C) The distribution of Cd in different subcellular compartments. The data shown in (A), are the averages of four replicates, with the standard errors indicated by the vertical bars. The means denoted by the same letter did not significantly differ at a P < 0.05, according to Tukey’s test. Cd, 100 μM cadmium; M25, 25 μM melatonin; M50, 50 μM melatonin; M100, 100 μM melatonin; M250, 250 μM melatonin; M500, 500 μM melatonin; DW, dry weight.