De-etiolation, on the other hand, is a series of physiological and biochemical changes a plant shoot undergoes in response to sunlight. This process is also known informally as greening. The changes triggered in the plant shoot all occur to make it ready to begin photosynthesis now that it is in sunlight.
Some of the changes that occur include:
This process is regulated by the exposure of various photoreceptors to light. Phytochrome A and phytochrome B both respond to an increasing propotion of red light to far-red light which occurs when the shoot comes out into the open. Cryptochrome 1 responds to increasing amounts of blue light when the shoot reachs the surface.
Scientists at Huazhong Agricultural University, National Key Laboratory of Crop Genetic Improvement Target Genetics.(Report)
Feb 15, 2011; Data detailed in 'Two complementary recessive genes in duplicated segments control etiolation in rice' have been...