Phytochromes
- Created by: tumblrgirl96
- Created on: 14-05-15 13:05
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- Phytochromes
- Plant photoreceptors
- Used to detect the quantity, direction and wavelength of light
- used to respond to changes in light conditions
- Used to detect the quantity, direction and wavelength of light
- Protein component bonded to a non-protein, light absorbing pigment molecule
- 2 isomers of the non-protein component
- Pr
- Phytochrome red
- absorbs red light
- Converts Pr into Pfr
- absorbs red light
- Synthesised by plants
- Phytochrome red
- Pfr
- Phytochrome far-red
- absorbs far red light
- Converts Pfr back into Pr
- Occurs slowly in the dark
- Converts Pfr back into Pr
- absorbs far red light
- Accumulates in the light
- More red light absorbed when the sun is out
- Phytochrome far-red
- Photoreversible
- Pr
- 2 isomers of the non-protein component
- Plant photoreceptors
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