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. 2013 Jul 22;4:264. doi: 10.3389/fpls.2013.00264

FIGURE 3.

FIGURE 3

Relationship between the cross-sectional area of sieve elements (SE) per minor loading vein and growth condition for three A. thaliana ecotypes (Italian ecotype, black circles; Col-0, white triangles; Swedish ecotype, black squares). Arabidopsis thaliana ecotypes were grown in controlled temperature (mean daytime leaf temperature indicated in °C) and light (moderate PFD at 400, and high PFD at 1000 μmol photons m-2 s-1) conditions. Actual daytime leaf temperatures varied between 24 and 26°C or between 12 and 16°C. Mean ± standard error of the mean shown (n = 4 plants), and statistically significant differences between Swedish and Italian ecotypes for each growth condition indicated with an asterisk (*P < 0.05; ***P < 0.001).