Document Detail


Regulating the proton budget of higher plant photosynthesis.
MedLine Citation:
PMID:  15972806     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In higher plant chloroplasts, transthylakoid proton motive force serves both to drive the synthesis of ATP and to regulate light capture by the photosynthetic antenna to prevent photodamage. In vivo probes of the proton circuit in wild-type and a mutant strain of Arabidopsis thaliana show that regulation of light capture is modulated primarily by altering the resistance of proton efflux from the thylakoid lumen, whereas modulation of proton influx through cyclic electron flow around photosystem I is suggested to play a role in regulating the ATP/NADPH output ratio of the light reactions.
Authors:
Thomas J Avenson; Jeffrey A Cruz; Atsuko Kanazawa; David M Kramer
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2005-06-22
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  102     ISSN:  0027-8424     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-07-06     Completed Date:  2005-09-12     Revised Date:  2010-09-21    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  9709-13     Citation Subset:  IM    
Affiliation:
Institute of Biological Chemistry, 289 Clark Hall, Washington State University, Pullman, WA 99164-6340, USA.
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MeSH Terms
Descriptor/Qualifier:
Adenosine Triphosphate / metabolism
Arabidopsis / physiology*
Biological Transport / physiology
Blotting, Western
Carbon Dioxide / metabolism
Electric Impedance
Electron Transport / physiology
Light*
NADP / metabolism
Photosynthesis / physiology*
Photosystem I Protein Complex / physiology*
Protons*
Spectrometry, Fluorescence
Thylakoids / metabolism*,  physiology
Chemical
Reg. No./Substance:
0/Photosystem I Protein Complex; 0/Protons; 124-38-9/Carbon Dioxide; 53-59-8/NADP; 56-65-5/Adenosine Triphosphate
Comments/Corrections

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