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. 2020 Nov 28;185(1):210–227. doi: 10.1093/plphys/kiaa009

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© The Author(s) 2020. Published by Oxford University Press on behalf of American Society of Plant Biologists.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Characterization of 10-week-old Columbia-0 (Col-0) and carotenoid-deficient Arabidopsis (A. thaliana) plants grown in LL (70-µmol photons m⁻² s⁻¹) and adapted to EL conditions (120-µmol photons m⁻² s⁻¹). A, Chl a fluorescence imaging analyses. Images present rosette morphology and the distribution of the maximal quantum yield of PSII (F_V/F_M) values. B, Chl content per dry weight tissue (DW). Chl a, black parts of bars; Chl b, white parts of bars. C, Carotenoid content per DW. D, Particular carotenoid (Neo, Vio, Ltx, Atx, Lut, Zea, Car) percentage contribution in the total carotenoid pool. Data are mean values ± sd from at least three independent experiments. Results marked with an asterisk on the top of the bar differ significantly at p = 0.05 (one-way ANOVA with post hoc Tukey test) from Col-0 in respective light condtions. Asterisk on the top of the line indicates significant differences in the results of a particular genotype between LL and EL conditions. Images of plants shown in (A) were digitally extracted for comparison.