This study measured the photosynthetic rate and isoprene emission from red oaks (Quercus rubra) during drought stress conditions. Over a period of 30 days, the trees were grown outdoors on a rooftop. The experimental group was subject to drought stress while the control group was watered regularly. The measurements from each group were compared to determine differences. The results indicated that isoprene emissions do not increase directly from drought stress, and that whole plant increases are due to indirect increases in leaf temperature caused by drought conditions.
"The effect of short-term water stress on leaf isoprene emission,"
DePaul Discoveries: Vol. 3
, Article 3.
Available at: http://via.library.depaul.edu/depaul-disc/vol3/iss1/3