Skip Navigation


Plant and Cell Physiology Advance Access first published online on March 15, 2005
This version published online on March 30, 2005
Plant and Cell Physiology, doi:10.1093/pcp/pci088
This Article
Right arrow Advance Access manuscript (PDF)
Right arrow All Versions of this Article:
46/6/837    most recent
pci088v2
pci088v1
Right arrow Alert me when this article is cited
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
Google Scholar
Right arrow Articles by Boussac, A.
Right arrow Articles by Rutherford, A. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Boussac, A.
Right arrow Articles by Rutherford, A. W.
Agricola
Right arrow Articles by Boussac, A.
Right arrow Articles by Rutherford, A. W.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology 2005 © The Japanese Society of Plant Physiologists (JSPP); all rights reserved.
Received January 7, 2005
Accepted March 11, 2005

Regular Paper

Near-Infrared-Induced Transitions in the Manganese Cluster of Photosystem II: Action Spectra for the S2 and S3 Redox States

Alain Boussac 1*, Miwa Sugiura 2, Diana Kirilovsky 1, and A. William Rutherford 1

1 Service de Bioénergétique, DBJC, URA CNRS 2096, CEA Saclay, 91191 Gif-sur-Yvette, France
2 Department of Applied Biological Chemistry, Faculty of Agriculture, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan

* To whom correspondence should be addressed.
Alain Boussac, E-mail: alain.boussac{at}cea.fr


  Abstract

The Mn4Ca complex that is involved in water oxidation in photosystem II (PSII) is affected by near infra-red (NIR) light in certain redox states and these phenomena can be monitored by EPR at low temperature. Here we report the action spectra of the NIR effects in the S2- and S3-states in PSII from plants and the thermophilic cyanobacterium Thermosynechococcus elongatus. The action spectra obtained are very similar in both S-states, indicating the presence of the same photoactive form of the Mn4Ca complex in both states. Since the chemical nature of the photoactive species is not known, an unequivocal interpretation of this result cannot be made, however it appears to be more easily reconciled with the view that the redox state of the Mn4Ca cluster does not change from the S2 to the S3 transition, at least in those centers sensitive to NIR light. The temperature dependence of the NIR effect and the action spectra for S2 indicates the presence of structural heterogeneity in the Mn4Ca cluster.

Keywords: Photosystem II; Manganese; near-infrared; EPR.
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 CellHome page
A. Thapper, F. Mamedov, F. Mokvist, L. Hammarstrom, and S. Styring
Defining the Far-Red Limit of Photosystem II in Spinach
PLANT CELL, August 1, 2009; 21(8): 2391 - 2401.
[Abstract] [Full Text] [PDF]

Home page
 Phil Trans R Soc BHome page
A. Boussac, M. Sugiura, T.-L. Lai, and A. W. Rutherford
Low-temperature photochemistry in photosystem II from Thermosynechococcus elongatus induced by visible and near-infrared light
Phil Trans R Soc B, March 27, 2008; 363(1494): 1203 - 1210.
[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.