Isoprene emission protects photosynthesis but reduces plant productivity during drought in transgenic tobacco (Nicotiana tabacum) plants

Summary Isoprene protects the photosynthetic apparatus of isoprene‐emitting plants from oxidative stress. The role of isoprene in the response of plants to drought is less clear. Water was withheld from transgenic isoprene‐emitting and non‐emitting tobacco ( Nicotiana tabacum ) plants, to examine: the response of isoprene emission to plant water deficit; a possible relationship between concentrations of the drought‐induced phytohormone abscisic...