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Fig. 5 | Biology Direct

Fig. 5

From: Analysis of state 1—state 2 transitions by genome editing and complementation reveals a quenching component independent from the formation of PSI-LHCI-LHCII supercomplex in Arabidopsis thaliana

Fig. 5

Analysis of PSII fluorescence quenching upon state 1—state 2 transition. The amplitude of PSII fluorescence quenching upon state 1–2 transition was estimated by calculating the qT parameter. A: qT values of genotypes. Only the cB2.1T40V, koLhcb2 and kostn7 exhibited a reduced qT compared to the wild type. B and C: 1-qP and 1-qL parameters, which reflect the fraction of closed PSII reaction centers, thus the reduction level of the plastoquinone pool. No change in 1-qP (1-qL) between state 1 and state 2 (S1, S2) indicates a full capacity to equilibrate the PSII/PSI excitation pressure upon shifts in light quality. The cB2.1T40V genotype, which is impaired in ST-induced PSII fluorescence quenching, failed to equilibrate the plastoquinone redox status

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Biology Direct

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