Light-Stimulated Cotyledon Expansion in Arabidopsis Seedlings (The Role of Phytochrome B).

Leaf and cotyledon expansion in dicotyledonous plants is a light-dependent developmental process. The unique role of phytochrome B has been tested by investigating expansion of cotyledons in wild-type and phytochrome-deficient mutants of Arabidopsis thaliana (L.) Heynh. A relatively rapid method for measuring cotyledon area was developed to quantify growth… CONTINUE READING