Nearby parts of an Arabidopsis leaf can experience steep differences in irradiance

<div><p>Solar blue light decreases sharply between the unshaded (0 µm) and shaded portions of the abaxial side of an Arabidopsis leaf.</p> <p>The average distance among stomata in Arabidopsis varies between 50 and 100 µm, indicating that neighbour stomata may be exposed to widely different light conditions.</p> <p>Data are means and standard errors of three replicates.</p> <p>Inset, Image of overlapping leaves illustrating the sharp transition between illuminated and shaded areas.</p>