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. 2020 Apr 21;13:78. doi: 10.1186/s13068-020-01718-8

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© The Author(s) 2020

Open AccessThis 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 licence, and indicate if changes were made. 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/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — PSII functional antenna size and PSII maximum quantum yield. a Fluorescence induction kinetics of PSII antenna size of wild type and selected mutant. b PSII functional antenna size expressed as the reciprocal of the time required to reach 2/3 of the maximum fluorescence emission, τ⁻¹_2/3(%). c PSII maximum quantum yield calculated as (F_M-F₀)/F_M from basal chlorophyll fluorescence in the dark (F₀) and maximum chlorophyll fluorescence induced by a saturating pulse (F_M). The statistical analysis of the results obtained was performed by unpaired two-sample t-test (n = 4, no statistically significant difference being p-value = 0.09 for PSII functional antenna size and p = 0.78 for F_v/F_m values)