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. 2021 Jan 25;12:570. doi: 10.1038/s41467-020-20627-w

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — a Relative electron transport rates (rETR) measured during rapid light curves (RLCs) following 120 h incubation, b maximum quantum efficiency in the dark-adapted state (F_v/F_m) and c maximum electron transport rate (rETR_max) after 24 and 120 h incubation. All plots show mean ±SE, n = 4. b, c lower and upper case letters denote homogeneous subsets identified from two-way ANOVA analysis of respective parameters in relation to duration and nutrient treatment, respectively. Two-way ANOVA results comparing treatments: F_4,30 = 6.48, P = 0.000699, and time points (24 vs 120 h): F_4,30 = 28.75, P = 0.00000839 for F_v/F_m. Two-way ANOVA results comparing treatments: F_4,30 = 16.71, P = 0.000000264, and time points: F_4,30 = 35.07, P = 0.00000174 for rETR_max. The results of Tukey HSD tests comparing F_v/F_m and rETR_max results for treatments at 24 and 120 h can be found in Supplementary Tables 2 and 3.