Fig. 4

Phenotype of transgenic tomato plants ectopically expressing MdPIP1;3 under drought stress. a Expression of MdPIP1;3 in the three transgenic lines and wild type by semi-quantitative RT-PCR, with the SlActin as internal gene. b Growth condition of three transgenic tomato lines and wild type under drought stress. ϴ V: the soil volumetric moisture content. The experiments were repeated in triplicate