Figure 6.

Growth is reduced in the βca2βca4 line when grown in low CO₂, whereas a high-CO₂ environment restores normal growth in the βca2βca4 line. Images show 10-week-old plants grown in low (200 μL L⁻¹) CO₂ (A) and high (1,000 μL L⁻¹) CO₂ (B) at a light intensity of 120 μmol photons m⁻² s⁻¹. All plants were grown under an 8-h-light (22°C)/16-h-dark (18°C) regime. WT, Wild type.