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[mass noun] A blue-green pigment found in many plants, in which it regulates various developmental processes.
- ‘This macroscopically observable reaction was identified to be coupled with light-induced processes of the photoreceptor phytochrome.’
- ‘This is the opposite of the situation in higher plants, where red light activates and far-red light inactivates phytochrome.’
- ‘Light signalling pathways from both phytochrome and cryptochrome photoreceptors regulate clock components to achieve entrainment in plants.’
- ‘Moreover, it has been suggested that some of the reported blue-UV effects may have resulted from phytochrome instead of blue-UV photoreceptor action.’
- ‘The plant photoreceptor phytochrome exhibits remarkable structural and functional variabilities in the plant cell.’
Late 19th century: from phyto- ‘relating to plants’ + Greek khrōma colour.
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