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. 2017 Jan 5;7:2015. doi: 10.3389/fpls.2016.02015

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Copyright © 2017 Rotini, Mejia, Costa, Migliore and Winters.

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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Biochemical descriptors in H. stipulacea plants collected along a depth gradient. (A) Mean photosynthetic pigment content in leaves (Chl a = Chlorophyll a; Chl b = Chlorophyll b; Car = total Carotenoids) and PAR measurements (taken along the 4–28 depth gradient, at noon, using the 2π-quantum sensor of the Diving-PAM fluorometer). (B) Pigment ratio values. (C) Mean total phenol content in leaves and rhizomes. Error bars represent standard deviations (n = 8). Significant differences among depths based on post hoc Tukey’s test are indicated with asterisks.