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. 2018 Nov 14;9:1648. doi: 10.3389/fpls.2018.01648

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Copyright © 2018 Yang, Zhang and Huang.

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) and the copyright owner(s) 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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Correlation between NPQ and Y(ND) (A) and residual activity of PSI and PSII (B) after exposure to 1178 μmol photons m^-2 s^-1 at 6°C for 100 min. Data of Figures 4B, 5B were used to analyze the correlation between NPQ and Y(ND). After the chilling-light treatment, the P_m (maximum photo-oxidizable P700 content) and F_v/F_m were measured, and the data were normalized to P_m and F_v/F_m before treatment and are represented as the residual activity of PSII and PSI after chilling-light treatment. Values are means ± SE (n = 4).