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Table 2 Measurement of chlorophyll fluorescence kinetics for photorespiration-impaired strains and WT under 588 μmol photons m−2 s−1

From: Impairing photorespiration increases photosynthetic conversion of CO2 to isoprene in engineered cyanobacteria

Strain rETR(II) Y(II) rETR(I) Y(I) Y(ND) Y(NA)
WT 23.63 ± 0.80 0.096 ± 0.004 56.83 ± 3.35 0.37 ± 0.01 0.59 ± 0.01 0.03 ± 0.01
ΔglcD1/D2 15.6 ± 1.35 0.063 ± 0.006 32.6 ± 4.67 0.28 ± 0.05 0.71 ± 0.07 0.01 ± 0.01
IspSΔglcD1/D2 20.03 ± 0.95 0.081 ± 0.004 47.63 ± 5.02 0.33 ± 0.01 0.65 ± 0.02 0.02 ± 0.01
MEP*-IspSΔglcD1/D2 21.63 ± 1.25 0.088 ± 0.005 56.4 ± 7.4 0.35 ± 0.01 0.63 ± 0.02 0.02 ± 0.02
  1. Y(II), effective quantum efficiency of PSII
  2. rETR(II), relative electron transport rate of PSII
  3. Y(I), effective quantum efficiency of PSI
  4. rETR(I), relative electron transport rate of PSI
  5. Y(ND), the quantum yield of non-photochemical energy dissipation due to donor-side limitation
  6. Y(NA), the quantum yield of non-photochemical energy dissipation due to acceptor-side limitation
  7. Data represent the means from three independent measurements ± SD. For each experiment, three technical replicates were performed