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Table 1 Analysis of PSII and PSI activity decrease in the photorespiration-impaired mutants compared to the WT

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

Light intensity Parameters ΔglcD1/D2 (%) IspS MEP*-IspS
ΔglcD1/D2 (%) ΔglcD1/D2 (%)
Normal rETR(II) and Y(II) 5.6–10 2.2–4.2 0.45–2.2
rETR(I) and Y(I) 0–14 − 1.47 to 3.8 − 2.6 to 1.4
High rETR(II) and Y(II) 14–60 5.5–30 3–13
rETR(I) and Y(I) 20–73 8.1–32 2.7–11.6
  1. Normal light intensity, 60–100 μmol m−2 s−1
  2. High light intensity, 142–2292 μmol m−2 s−1