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. 2024 Nov 26;14:29274. doi: 10.1038/s41598-024-80836-x

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, 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 licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.

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Fig. 5 — Simultaneous loss of PGDH3 and PGR5-dependent CEF strongly affects the PSI acceptor-side and decreases higher loss-of-function mutant survival under fluctuating light treatments. A, B Fluctuating light measurements (5 min low light (80 PAR) followed by 1 min high light (1100 PAR)) were carried out on 3-week-old plants to determine PSI acceptor-side limitation (Y(NA)), PSI donor site limitation (Y(ND)), photochemical quantum yield of PSI (Y(I)), quantum yield of regulated energy dissipation (Y(NPQ)), quantum yield of nonregulated energy dissipation (Y(NO)), and effective PSII quantum yield (Y(II)). Genotypes: Col-0 (filled squares), pgdh3-1 (filled circle), pgr5^hope1 (empty triangle), and pgdh3pgr5^hope1 (half-filled circle). Mean, ± SEM, N = 3. C 12-days-old seedlings germinated and grown under fluctuating light conditions (5 min at 50 PAR low light, 1 min at 500 PAR high light) for the genotypes Col-0, pgdh3-1, pam68l, pgr5^hope1, and pgr5-Cas#1, pgdh3pam68l, pgdh3pgr5^hope1, and pgdh3pgr5-Cas#1. Scale bar = 1 cm. D 3-week-old plants of the aforementioned genotypes were subjected to control and fluctuating light conditions and given one week of recovery afterward. Scale bar = 1 cm.