Content of dehydrins in both control and stressed plants of the four tomato cultivars. (A) Immunoblotting in leaves of the four tomato varieties analyzed. Lane 1, Perina CTRL; lane 2, Perina DS; lane 3 Fragola CTRL; lane 4, Fragola DS; lane 5, Quarantino CTRL; lane 6 Quarantino DS; lane 7, Pisanello CTRL; lane 8, Pisanello DS. The major dehydrins identified have molecular weights of 33.7, 30, 22, 17.8, and 15 kDa. (B) Relative content of dehydrins in the four tomato cultivars in both control (CTRL, in green) and drought-stressed (DS, in red) samples. Please note that in this graph the green bars of control samples are superimposed on the red bars of stressed samples.