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Phytochromes and cryptochromes in the entrainment of the Arabidopsis circadian clock.
- Source :
-
Science (New York, N.Y.) [Science] 1998 Nov 20; Vol. 282 (5393), pp. 1488-90. - Publication Year :
- 1998
-
Abstract
- Circadian clocks are synchronized by environmental cues such as light. Photoreceptor-deficient Arabidopsis thaliana mutants were used to measure the effect of light fluence rate on circadian period in plants. Phytochrome B is the primary high-intensity red light photoreceptor for circadian control, and phytochrome A acts under low-intensity red light. Cryptochrome 1 and phytochrome A both act to transmit low-fluence blue light to the clock. Cryptochrome 1 mediates high-intensity blue light signals for period length control. The presence of cryptochromes in both plants and animals suggests that circadian input pathways have been conserved throughout evolution.
- Subjects :
- Arabidopsis genetics
Arabidopsis Proteins
Cryptochromes
Flavoproteins genetics
Light
Mutation
Phytochrome genetics
Phytochrome A
Phytochrome B
Plants, Genetically Modified
Receptors, G-Protein-Coupled
Signal Transduction
Arabidopsis physiology
Biological Clocks physiology
Circadian Rhythm physiology
Drosophila Proteins
Eye Proteins
Flavoproteins physiology
Photoreceptor Cells
Photoreceptor Cells, Invertebrate
Phytochrome physiology
Transcription Factors
Subjects
Details
- Language :
- English
- ISSN :
- 0036-8075
- Volume :
- 282
- Issue :
- 5393
- Database :
- MEDLINE
- Journal :
- Science (New York, N.Y.)
- Publication Type :
- Academic Journal
- Accession number :
- 9822379
- Full Text :
- https://doi.org/10.1126/science.282.5393.1488