| Intramolecular uncoupling of chromophore photoconversion from structural signaling determinants drive mutant phytochrome B photoreceptor to far-red light perception. | |
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MedLine Citation:
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PMID: 22836504 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The phytochrome (phy) photoreceptor family regulates almost all aspects of plant development in a broad range of light environments including seed germination, onset of the photomorphogenic program in seedling stage, the shade avoidance syndrome in competing plant communities, flowering induction and senescence of adult plants. During evolution two clearly distinct classes of phy-s emerged covering these very different physiological tasks. ( 1) PhyA is rapidly degraded in its activated state. PhyA functions in controlling seed germination at very low light intensities (very low fluence response, VLFR) and seedling establishment under photosynthetic shade conditions (high irradiance response, HIR) where the far-red portion of the transmitted light to understorey habitats is substantially enhanced. Arabidopsis phyB together with phyC, D and E belongs to the relatively stable sensor class in comparison to the light labile phyA. PhyB functions at all stages of development including seed germination and seedling establishment, mediates classical red/far-red reversible low fluence responses (LFR) as well as red light high irradiance responses, and it is considered to be the dominating phytochrome sensor of its class. |
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Authors:
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Stefan Kircher; Diana Bauer; Eberhard Schäfer; Ferenc Nagy |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2012-07-27 |
Journal Detail:
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Title: Plant signaling & behavior Volume: 7 ISSN: 1559-2324 ISO Abbreviation: Plant Signal Behav Publication Date: 2012 Aug |
Date Detail:
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Created Date: 2012-10-16 Completed Date: 2013-03-12 Revised Date: 2013-04-08 |
Medline Journal Info:
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Nlm Unique ID: 101291431 Medline TA: Plant Signal Behav Country: United States |
Other Details:
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Languages: eng Pagination: 904-6 Citation Subset: IM |
Affiliation:
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Institute of Biology II; Faculty of Biology, University of Freiburg, Germany. Stefan.kircher@biologie.uni-freiburg.de |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Alleles Arabidopsis / genetics, radiation effects* Arabidopsis Proteins / genetics*, metabolism Light* Light Signal Transduction / radiation effects* Mutation / genetics* Phytochrome B / genetics*, metabolism Plants, Genetically Modified Protein Transport / radiation effects Transgenes |
| Chemical | |
Reg. No./Substance:
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0/Arabidopsis Proteins; 0/PHYB protein, Arabidopsis; 136250-22-1/Phytochrome B |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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