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Rates of stomatal closure in leaves from intact plants of C. communis (A) and tobacco (B) at two different temperatures under a light source with a photosynthetic photon flux density (PPFD) of 350 μmol m−2 s−1. Stomatal aperture (25 stomata from each of three leaves per treatment) was measured under the microscope by peeling epidermal strips from the leaves.
