Extended Data Fig. 7: Comparative growth of tobacco and hybrid Arabidopsis Rubisco producing tobacco lines under elevated CO2 – Growth experiment 4.
From: Laboratory evolution of Rubisco solubility and catalytic switches to enhance plant productivity
Plants were grown in a greenhouse as in growth experiment 2 (Extended Data Fig. 6) during Oct 2023 – Feb 2024 in air containing 600 ppm CO2. (a) Individual measures of height increase over time were made for n = 12 plants with destructive measures of leaf and stem dry biomass for (b) n = 6 or7 plants when 66 ± 2 cm in height (indicated by purple horizontal line in panel a) at the times indicated for each genotype (numbers circles correlating to panel a). Black lines represent sigmoidal growth fits to the height measurements (see Source Data Fig. 6 and Extended Data Figs. 6 and 7 for measurements of each plant). Shown are the mean ( ± SD) of the linear exponential growth rates (red text and line) measured for each plant during stem elongation. Timing of A-Ci gas exchange measurements are indicated by the horizontal yellow line (that is, when plants were at 35 ± 3 cm in height). Uncropped plants images are provided in Source Data Fig. 2 and Extended Data Figs. 2, 4, 6 and 7.
