Document Detail


The relationship between light scattering and chlorophyll a fluorescence during oscillations in photosynthetic carbon assimilation.
MedLine Citation:
PMID:  3919649     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Light scattering, which can be taken as an indicator of the transthylakoid proton gradient, and the 518-nm rise, which can be regarded as a measure of the transthylakoid membrane potential, have been followed during oscillations in chlorophyll a fluorescence, which are known to be associated with corresponding changes in photosynthetic carbon assimilation. Both components oscillated in a manner which was broadly reciprocal to chlorophyll a fluorescence. However, there was a phase shift such that the light-scattering change usually anticipated fluorescence and often also the 518-nm shift. It is concluded that the proton motive force rises and falls slightly in advance of rises and falls in carbon assimilation. The relationship of these changes to a possible underlying mechanism is discussed.
Authors:
M N Sivak; K J Dietz; U Heber; D A Walker
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of biochemistry and biophysics     Volume:  237     ISSN:  0003-9861     ISO Abbreviation:  Arch. Biochem. Biophys.     Publication Date:  1985 Mar 
Date Detail:
Created Date:  1985-04-19     Completed Date:  1985-04-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372430     Medline TA:  Arch Biochem Biophys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  513-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Carbon / metabolism*
Carbon Dioxide
Chlorophyll / metabolism*
Chloroplasts / metabolism*
Electrochemistry
Light
Oxygen
Photosynthesis*
Plants / metabolism
Scattering, Radiation
Spectrometry, Fluorescence
Chemical
Reg. No./Substance:
124-38-9/Carbon Dioxide; 1406-65-1/Chlorophyll; 479-61-8/chlorophyll a; 7440-44-0/Carbon; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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