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. 2015 Nov 23;10(11):e0142987. doi: 10.1371/journal.pone.0142987

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© 2015 Carrillo et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 4 — (A) The electron-transport rate (ETR) vs. irradiance; (B) ETR_max; (C) Initial slopes (α_ETR) of curves ETR; (D) Dd de-epoxidation state of the xanthophyll cycle pigments (D_t:(D_t+D_d) (diadinoxanthin, D_d, and diatoxanthin, D_t) under photosynthetically active radiation (PAR) and full sunlight (PAR+UVR) in nutrient enriched (P-enriched) and non-enriched (control) treatments. Data are expressed as mean values ± sd (n = 3). Significant differences among treatments are denoted by lower-case letters.