Phenotypes of wild-type (WT) and AtUCP1 transgenic tobacco plants under drought and salt stresses.

First row: WT plants and three AtUCP1-overexpressing lines (7, 32 and 49) were grown under control conditions for 5 weeks. Middle row: plants watered with 200 mM mannitol for 10 days and then irrigated with water for 3 days. Bottom row: plants irrigated for 10 days with 175 mM NaCl and then irrigated with water for 3 days. A total of 5 plants from each line were used in the assay, and a representative plant is shown.