PMID: 11607639Mar 5, 1996Paper

The rate constant of photoinhibition, measured in lincomycin-treated leaves, is directly proportional to light intensity

Proceedings of the National Academy of Sciences of the United States of America
E Tyystjärvi, E M Aro

Abstract

Pumpkin leaves grown under high light (500-700 micromol of photons m-2.s-1) were illuminated under photon flux densities ranging from 6.5 to 1500 micromol.m-2.s-1 in the presence of lincomycin, an inhibitor of chloroplast protein synthesis. The illumination at all light intensities caused photoinhibition, measured as a decrease in the ratio of variable to maximum fluorescence. Loss of photosystem II (PSII) electron transfer activity correlated with the decrease in the fluorescence ratio. The rate constant of photoinhibition, determined from first-order fits, was directly proportional to photon flux density at all light intensities studied. The fluorescence ratio did not decrease if the leaves were illuminated in low light in the absence of lincomycin or incubated in darkness in the presence of lincomycin. The constancy of the quantum yield of photoinhibition under different photon flux densities strongly suggests that photoinhibition in vivo occurs by one dominant mechanism under all light intensities. This mechanism probably is not the acceptor side mechanism characterized in the anaerobic case in vitro. Furthermore, there was an excellent correlation between the loss of PSII activity and the loss of the D1 protein from thylak...Continue Reading

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Citations

Oct 19, 2011·Journal of Plant Research·Masayuki Muramatsu, Yukako Hihara
Jul 29, 2005·Photosynthesis Research·András SzilárdImre Vass
May 5, 2007·Photosynthesis Research·Aleel K Grennan, Donald R Ort
Aug 19, 2008·Photosynthesis Research·Marvin Edelman, Autar K Mattoo
May 31, 2012·Photosynthesis Research·Jiancun KouWah Soon Chow
Jul 10, 2012·Photosynthesis Research·José Ignacio García-PlazaolaAlbert Porcar-Castell
Oct 29, 2013·Photosynthesis Research·Taras K AntalEsa Tyystjärvi
Mar 7, 2008·Proceedings of the National Academy of Sciences of the United States of America·Shunichi TakahashiMurray Badger
Feb 10, 2009·Proceedings of the National Academy of Sciences of the United States of America·Shunichi TakahashiMurray R Badger
Sep 20, 2012·Proceedings of the National Academy of Sciences of the United States of America·Jeremy Harbinson
Nov 22, 2012·Proceedings of the National Academy of Sciences of the United States of America·Miroslava HerbstováHelmut Kirchhoff
Jul 21, 2010·Journal of Experimental Botany·Päivi SarvikasEsa Tyystjärvi
Jun 3, 2011·Plant & Cell Physiology·Kim Gabriele BeiselShizue Matsubara
Nov 14, 2012·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Mikko TikkanenEva-Mari Aro
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Krishna K. Niyogi
Dec 20, 2007·PloS One·Christophe SixDouglas A Campbell
Jun 26, 2002·Photochemistry and Photobiology·Stefano SantabarbaraRobert C Jennings
Jul 3, 2013·Proceedings of the National Academy of Sciences of the United States of America·Matthew D BrooksKrishna K Niyogi
Feb 18, 1997·Proceedings of the National Academy of Sciences of the United States of America·N KerenI Ohad
Dec 17, 2004·Proceedings of the National Academy of Sciences of the United States of America·Shizue Matsubara, Wah Soon Chow
Feb 11, 2005·Proceedings of the National Academy of Sciences of the United States of America·Yunling WangDavid Morse
Dec 4, 2013·Biochimica Et Biophysica Acta·Marjaana SuorsaEva-Mari Aro
May 29, 2014·Journal of Experimental Botany·Albert Porcar-CastellJoseph A Berry
Sep 10, 2014·Journal of Photochemistry and Photobiology. B, Biology·Cheng YangXiang-Dong Li
Aug 15, 2014·Photosynthesis Research·Hazem M KalajiMarek Zivcak

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