Plant and Cell Physiology, 2003, Vol. 44, No. 3 318-325
© 2003 Oxford University Press
The Excess Light Energy that is neither Utilized in Photosynthesis nor Dissipated by Photoprotective Mechanisms Determines the Rate of Photoinactivation in Photosystem II
1 Graduate School of Life Sciences, Tohoku University, Sendai, 980-8578 Japan
2 Graduate School of Agricultural Sciences, Tohoku University, Sendai, 981-8555 Japan
Photoinactivation of PSII is thought to be caused by the excessive light energy that is neither used for photosynthetic electron transport nor dissipated as heat. However, the relationship between the photoinactivation rate and excess energy has not been quantitatively evaluated. Chenopodium album L. plants grown under high-light and high-nitrogen (HL-HN) conditions show higher tolerance to photoinactivation and have higher photosynthetic capacity than the high-light and low-nitrogen (HL-LN)- and low-light and high-nitrogen (LL-HN)-grown plants. The rate of photoinactivation in the LL-HN plants was faster than that in the HL-LN, which was similar to that in the HL-HN plants, while the LL-HN and HL-LN plants had similar photosynthetic capacities [Kato et al. (2002b) Funct. Plant Biol. 29: 787]. We quantified partitioning of light energy between the electron transport and heat dissipation at the light intensities ranging from 300 to 1,800 µmol m–2 s–1. The maximum electron transport rate was highest in the HL-HN plants, heat dissipation was greatest in the HL-LN plants, and the excess energy, which was neither consumed for electron transport nor dissipated as heat, was greatest in the LL-HN plants. The first-order rate constant of the PSII photoinactivation was proportional to the magnitude of excess energy, with a single proportional constant for all the plants, irrespective of their growth conditions. Thus the excess energy primarily determines the rate of PSII photoinactivation. A large photosynthetic capacity in the HL-HN plants and a large heat dissipation capacity in the HL-LN plants both contribute to the protection of PSII against photoinactivation.
3 Present address: Fuji Oil Co., Ltd., Hannan R&D Center, Izumisano, Osaka, 598-8540 Japan.
4 Corresponding author: Email, hikosaka{at}mail.cc.tohoku.ac.jp; Fax, +81-22-217-6699.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  R. Oguchi, I. Terashima, and W. S. Chow The Involvement of Dual Mechanisms of Photoinactivation of Photosystem II in Capsicum annuum L. Plants Plant Cell Physiol., October 1, 2009; 50(10): 1815 - 1825. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
I. Terashima, T. Fujita, T. Inoue, W. S. Chow, and R. Oguchi Green Light Drives Leaf Photosynthesis More Efficiently than Red Light in Strong White Light: Revisiting the Enigmatic Question of Why Leaves are Green Plant Cell Physiol., April 1, 2009; 50(4): 684 - 697. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Matsuda, K. Ohashi-Kaneko, K. Fujiwara, and K. Kurata Effects of Blue Light Deficiency on Acclimation of Light Energy Partitioning in PSII and CO2 Assimilation Capacity to High Irradiance in Spinach Leaves Plant Cell Physiol., April 1, 2008; 49(4): 664 - 670. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Suzuki, K. Nagasuga, and M. Okada The Chilling Injury Induced by High Root Temperature in the Leaves of Rice Seedlings Plant Cell Physiol., March 1, 2008; 49(3): 433 - 442. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. LIAKOPOULOS, D. NIKOLOPOULOS, A. KLOUVATOU, K.-A. VEKKOS, Y. MANETAS, and G. KARABOURNIOTIS The Photoprotective Role of Epidermal Anthocyanins and Surface Pubescence in Young Leaves of Grapevine (Vitis vinifera) Ann. Bot., July 1, 2006; 98(1): 257 - 265. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Laisk, H. Eichelmann, V. Oja, B. Rasulov, and H. Ramma Photosystem II Cycle and Alternative Electron Flow in Leaves Plant Cell Physiol., July 1, 2006; 47(7): 972 - 983. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 L. Mommer, T. L. Pons, M. Wolters-Arts, J. H. Venema, and E. J.W. Visser Submergence-Induced Morphological, Anatomical, and Biochemical Responses in a Terrestrial Species Affect Gas Diffusion Resistance and Photosynthetic Performance Plant Physiology, September 1, 2005; 139(1): 497 - 508. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Hikosaka Nitrogen Partitioning in the Photosynthetic Apparatus of Plantago asiatica Leaves Grown Under Different Temperature and Light Conditions: Similarities and Differences Between Temperature and Light Acclimation Plant Cell Physiol., August 1, 2005; 46(8): 1283 - 1290. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. Hirotsu, A. Makino, S. Yokota, and T. Mae The Photosynthetic Properties of Rice Leaves Treated with Low Temperature and High Irradiance Plant Cell Physiol., August 1, 2005; 46(8): 1377 - 1383. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L.-S. CHEN, Y.-P. QI, and X.-H. LIU Effects of Aluminum on Light Energy Utilization and Photoprotective Systems in Citrus Leaves Ann. Bot., July 1, 2005; 96(1): 35 - 41. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Miyake, M. Miyata, Y. Shinzaki, and K.-i. Tomizawa CO2 Response of Cyclic Electron Flow around PSI (CEF-PSI) in Tobacco Leaves--Relative Electron fluxes through PSI and PSII Determine the Magnitude of Non-photochemical Quenching (NPQ) of Chl Fluorescence Plant Cell Physiol., April 1, 2005; 46(4): 629 - 637. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Kornyeyev, S. Holaday, and B. Logan Predicting the Extent of Photosystem II Photoinactivation Using Chlorophyll a Fluorescence Parameters Measured during Illumination Plant Cell Physiol., October 15, 2003; 44(10): 1064 - 1070. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. Haldrup, C. Lunde, and H. V. Scheller Arabidopsis thaliana Plants Lacking the PSI-D Subunit of Photosystem I Suffer Severe Photoinhibition, Have Unstable Photosystem I Complexes, and Altered Redox Homeostasis in the Chloroplast Stroma J. Biol. Chem., August 29, 2003; 278(35): 33276 - 33283. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. D. Tsonev and K. Hikosaka Contribution of Photosynthetic Electron Transport, Heat Dissipation, and Recovery of Photoinactivated Photosystem II to Photoprotection at Different Temperatures in Chenopodium album Leaves Plant Cell Physiol., August 15, 2003; 44(8): 828 - 835. [Abstract] [Full Text] [PDF]
|
|