Figure 5.

Effects of anoxia and the ALDH inhibitor disulfiram on isoprene emission of poplar leaves. An excised poplar leaf was placed into a cuvette and was then fed with 0.65 mm disulfiram (a); fed via the transpiration stream, with 0.65 mm disulfiram under normoxic conditions and then switched to anoxic conditions (b); and exposed to anoxic conditions (N₂, 360 ppm CO₂) and then switched to normoxic conditions (c). Changes of conditions are indicated by vertical lines. One typical experiment out of three is shown.