| The perception of light direction and orientation responses in chloroplasts. | |
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MedLine Citation:
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PMID: 6399786 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We may summarise what is known, in stationary cells, about perception of light direction. Cells have evolved three different mechanisms to transform light direction into an absorption gradient: light attenuation, light refraction, and dichroic orientation of the photoreceptors. Furthermore, these mechanisms can be combined and can cooperate in the same cell. With the photochromic pigment phytochrome, a regular change in dichroism upon photoconversion is an important improvement for effectively establishing an absorption gradient. However, perception of the direction of light, while a necessary condition, is not solely sufficient for a directional response. Equally important is a strongly localised transduction chain effecting localised control of the intracellular motor apparatus. Slowly-diffusing ions seem to fulfil this requirement, but further work needs to be done to elucidate the mechanisms completely. |
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Authors:
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W Haupt |
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Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Symposia of the Society for Experimental Biology Volume: 36 ISSN: 0081-1386 ISO Abbreviation: Symp. Soc. Exp. Biol. Publication Date: 1983 |
Date Detail:
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Created Date: 1985-11-05 Completed Date: 1985-11-05 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 0404517 Medline TA: Symp Soc Exp Biol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 423-42 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algae, Green
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physiology* Chloroplasts / physiology* Light Movement Phytochrome / physiology Rotation Spectrum Analysis |
| Chemical | |
Reg. No./Substance:
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11121-56-5/Phytochrome |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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