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Leaf growth of (A) A. thaliana, (B) R. communis, (C) Z. mays, and (D) O. sativa transferred from 12/12 h day/night to a continuous light regime. Hatched bars represent subjective night in the continuous light treatment. For Z. mays, replicate plants are shown with different lines; for A. thaliana, mean value and SD (n=4) are shown.
