Figure 2

Cross sections of leaves of Arabidopsis grown at three temperatures. Samples were taken at ambient temperature (A and B), elevated temperature I (C and D), and elevated temperature II (E and F). Note that the leaf at elevated temperature II was the thinnest of the three temperatures. In addition, there were more chloroplasts per cell at ambient temperature and elevated temperature I than elevated temperature II. Bars, 150 μm (A, C and E); 50 μm (B, D and F).