Plant Physiol. email content delivery
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
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 Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Kim, J. H.
Right arrow Articles by Melis, A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kim, J. H.
Right arrow Articles by Melis, A.
Agricola
Right arrow Articles by Kim, J. H.
Right arrow Articles by Melis, A.

PLANT PHYSIOLOGY , Vol 103, Issue 1 181-189, Copyright © 1993 by American Society of Plant Biologists

BIOENERGETICS

Photosystem II Reaction Center Damage and Repair in Dunaliella salina (Green Alga) (Analysis under Physiological and Irradiance-Stress Conditions)

J. H. Kim, J. A. Nemson and A. Melis
Department of Plant Biology, University of California, Berkeley, California 94720

Mechanistic aspects of the photosystem II (PSII) damage and repair cycle in chloroplasts were investigated. The D1/32-kD reaction center protein of PSII (known as the psbA chloroplast gene product) undergoes a frequent light-dependent damage and turnover in the thylakoid membrane. In the model organism Dunaliella salina (green alga), growth under a limiting intensity of illumination (100 [mu]mol of photons m-2 s-1; low light) entails damage, degradation, and replacement of D1 every about 7 h. Growth under irradiance-stress conditions (2000 [mu]mol of photons m-2 s-1; high light) entails damage to and replacement of D1 about every 20 min. Thus, the rate of damage and repair of PSII appears to be proportional to the light intensity during plant growth. Low-light-grown cells do not possess the capacity for high rates of repair. Upon transfer of low-light-grown cells to high-light conditions, accelerated damage to reaction center proteins is followed by PSII disassembly and aggregation of neighboring reaction center complexes into an insoluble dimer form. The accumulation of inactive PSII centers that still contain the D1 protein suggests that the rate of D1 degradation is the rate-limiting step in the PSII repair cycle. Under irradiance-stress conditions, chloroplasts gradually acquire a greater capacity for repair. The induction of this phenomenon occurs with a half-time of about 24 h.


This article has been cited by other articles:


Home page
 Biophys. JHome page
G. Raszewski, B. A. Diner, E. Schlodder, and T. Renger
Spectroscopic Properties of Reaction Center Pigments in Photosystem II Core Complexes: Revision of the Multimer Model
Biophys. J., July 1, 2008; 95(1): 105 - 119.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
S. Park, P. Khamai, J. G. Garcia-Cerdan, and A. Melis
REP27, a Tetratricopeptide Repeat Nuclear-Encoded and Chloroplast-Localized Protein, Functions in D1/32-kD Reaction Center Protein Turnover and Photosystem II Repair from Photodamage
Plant Physiology, April 1, 2007; 143(4): 1547 - 1560.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
F. Wolfe-Simon, V. Starovoytov, J. R. Reinfelder, O. Schofield, and P. G. Falkowski
Localization and Role of Manganese Superoxide Dismutase in a Marine Diatom
Plant Physiology, December 1, 2006; 142(4): 1701 - 1709.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
S. Pfeiffer and K. Krupinska
New Insights in Thylakoid Membrane Organization
Plant Cell Physiol., September 1, 2005; 46(9): 1443 - 1451.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
E. Jin, K. Yokthongwattana, J. E.W. Polle, and A. Melis
Role of the Reversible Xanthophyll Cycle in the Photosystem II Damage and Repair Cycle in Dunaliella salina
Plant Physiology, May 1, 2003; 132(1): 352 - 364.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
T. Masuda, J. E.W. Polle, and A. Melis
Biosynthesis and Distribution of Chlorophyll among the Photosystems during Recovery of the Green Alga Dunaliella salina from Irradiance Stress
Plant Physiology, February 1, 2002; 128(2): 603 - 614.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
K. Yokthongwattana, B. Chrost, S. Behrman, C. Casper-Lindley, and A. Melis
Photosystem II Damage and Repair Cycle in the Green Alga Dunaliella salina: Involvement of a Chloroplast-Localized HSP70
Plant Cell Physiol., December 1, 2001; 42(12): 1389 - 1397.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
J. E. W. Polle, K. K. Niyogi, and A. Melis
Absence of Lutein, Violaxanthin and Neoxanthin Affects the Functional Chlorophyll Antenna Size of Photosystem-II but not that of Photosystem-I in the Green Alga Chlamydomonas reinhardtii
Plant Cell Physiol., May 1, 2001; 42(5): 482 - 491.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
M. Havaux and K. K. Niyogi
The violaxanthin cycle protects plants from photooxidative damage by more than one mechanism
PNAS, July 20, 1999; 96(15): 8762 - 8767.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
M. Schroda, O. Vallon, F.-A. Wollman, and C. F. Beck
A Chloroplast-Targeted Heat Shock Protein 70 (HSP70) Contributes to the Photoprotection and Repair of Photosystem II during and after Photoinhibition
PLANT CELL, June 1, 1999; 11(6): 1165 - 1178.
[Abstract] [Full Text]

Home page
 Plant Physiol.Home page
D. D. Wykoff, J. P. Davies, A. Melis, and A. R. Grossman
The Regulation of Photosynthetic Electron Transport during Nutrient Deprivation in Chlamydomonas reinhardtii
Plant Physiology, May 1, 1998; 117(1): 129 - 139.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1993 by the American Society of Plant Biologists