Figure 1.

Desert-adapted tomato plants have thicker leaves than domesticated tomato and are resistant to drought. A, Thickness across leaflet blades of domesticated (S. lycopersicum M82) and desert-adapted (S. pennellii) tomatoes measured with a custom-built dual confocal profilometer device (Supplemental Fig. S1). The median thickness of the S. lycopersicum leaflet shown here is 211 μm, and that for S. pennellii is 294 μm. B, Confocal images of propidium iodide-stained leaflet cross sections. Bars = 200 μm. C, Total shoot area normalized by taking the square root of pixels (px) from top-view phenotyping images over 16 d in three water treatments (n = 8). Gray shading reflects se.