Figure 2.
COS uptake rates (pmol m−2 s−1; A) and LRU values (B) during light response measurements in C4 plants. Species used were: maize, sorghum, and amaranthus. Conditions during the experiments were: T approximately 24°C, RH approximately 70%, [COS] approximately 550 pmol mol−1, and [CO2] = 400 μmol mol−1. Symbols without error bars have sd < 2% (in section B only). Inset: LRU (the normalized ratio of COS/CO2 uptake rates) under high light intensity.