Skip Navigation



JXB Advance Access published online on November 8, 2004
Journal of Experimental Botany, doi:10.1093/jxb/eri022
© 2004 by Oxford University Press
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
56/411/395    most recent
eri022v1
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Cruz, J. A.
Right arrow Articles by Kramer, D. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Cruz, J. A.
Right arrow Articles by Kramer, D. M.
Agricola
Right arrow Articles by Cruz, J. A.
Right arrow Articles by Kramer, D. M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Received June 3, 2004
Accepted August 31, 2004

Light Stress in Plants: Mechanisms and Interactions Special Issue Article

Plasticity in light reactions of photosynthesis for energy production and photoprotection

Jeffrey A. Cruz 1, Thomas J. Avenson 1, Atsuko Kanazawa 1, Kenji Takizawa 1, Gerald E. Edwards 2, and David M. Kramer 1*

1 Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA
2 School of Biological Sciences, Washington State University, Pullman, WA 99164, USA

* To whom correspondence should be addressed.
David M. Kramer, E-mail: dkramer{at}wsu.edu


  Abstract

Plant photosynthesis channels some of the most highly reactive intermediates in biology, in a way that captures a large fraction of their energy to power the plant. A viable photosynthetic apparatus must not only be efficient and robust machinery, but also well integrated into the plant's biochemical and physiological networks. This requires flexibility in its responses to the dramatically changing environmental conditions and biochemical demands. First, the output of the energy-storing light reactions must match the demands of plant metabolism. Second, regulation of the antenna must be flexible to allow responses to diverse challenges that could result in excess light capture and subsequent photoinhibition. Evidence is presented for the interplay of two types of mechanistic flexibility, one that modulates the relative sensitivity of antenna down-regulation to electron flow, and the other, which primarily modulates the output ratio of ATP/NADPH, but also contributes to down-regulation.

Keywords: ATP synthase; cyclic electron transfer; proton motive force; qE quenching; water-water cycle.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Plant Physiol.Home page
H. Aronsson, M. A. Schottler, A. A. Kelly, C. Sundqvist, P. Dormann, S. Karim, and P. Jarvis
Monogalactosyldiacylglycerol Deficiency in Arabidopsis Affects Pigment Composition in the Prolamellar Body and Impairs Thylakoid Membrane Energization and Photoprotection in Leaves
Plant Physiology, September 1, 2008; 148(1): 580 - 592.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
I. Ensminger, J. Foerster, C. Hagen, and W. Braune
Plasticity and acclimation to light reflected in temporal and spatial changes of small-scale macroalgal distribution in a stream
J. Exp. Bot., August 1, 2005; 56(418): 2047 - 2058.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.