(P1B-1) Functional characterization of the chloroplastic selenium-independent glutathione peroxidases (GPXs) in Arabidopsis thaliana. (Abstract 394)
Christine Chi-Chen Chang^*,1, Barbara Karpinska¹, Lucía Jordá-Miró², Ireneusz Slesak⁴, Michael Melzer⁵, Jane Parker², Philip Mullineaux³, Stanislaw Karpinski¹, ¹ Department of Botany, Stockholm, Sweden² Department of Molecular Plant Pathology, Cologne, Germany⁴ Polish Academy of Sciences, Krakow, Poland⁵ Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany³ Dept. of Disease and Stress Biology, Norwich, U.K.

(P1B-2) Vitamin C is important for acclimation to and growth in high light. (Abstract 395)
Patricia Müller-Moule^*,1, Talila Golan², Krishna Niyogi², ¹ Institute for Developmental and Molecular Plant Biology, Düsseldorf, Germany² Department of Plant and Microbial Biology, Berkeley, CA, USA

(P1B-3) Does elevated CO₂ protect against photoinhibition in Phillyrea angustifolia at high temperature and low light? (Abstract 396)
Luca Vitale^*,1, Arena Carmen¹, Amalia Virzo De Santo¹, Nicola D'Ambrosio¹, ¹ Dipartimento di Biologia Vegetale, Napoli, Italy.

(P1B-4) Short-term exposures to elevated CO₂ mitigate chilling stress in Beta vulgaris L. plants. (Abstract 397)
Carmen Arena^*,1, Luca Vitale¹, Amalia Virzo De Santo¹, Nicola D'Ambrosio¹, ¹ Dipartimento di Biologia Vegetale, Napoli, Italy.

(P1B-5) Contribution of ATP synthesis to the repair of Photosystem II in the photodamage-repair cycle in Synechocystis. (Abstract 398)
Suleyman Allakhverdiev^{*,1, 2}, Yoshitaka Nishiyama^{1, 3}, Shunichi Takahashi¹, Sachio Miyairi^{1, 4}, Iwane Suzuki¹, Norio Murata¹, ¹ National Institute for Basic Biology, Okazaki 444-8585, Japan² Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia³ Ehime University, Matsuyama 790-8577, Japan⁴ National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8566, Japan

(P1B-6) Respiration by light and KatG activity in Synechocystis PCC 6803 and Synechococcus PCC 6301 grown at high salinity. (Abstract 399)
Ioan ARDELEAN^*,1, Gûnter PESCHEK², ¹ Institute of Biology, Centre of Microbiology, Bucharest, ROMANIA² Molecular Bioenergetics Group, Viena, AUSTRIA

(P1B-7) The role of tocopherol in preventing oxidative damage at the cyanobacterial Photosystem II from Synechocystis sp. PCC 6803. (Abstract 400)
Ninja Backasch^*,1, Jens Appel¹, Matthias Schultze¹, Rüdiger Schulz-Friedrich¹, ¹ Botanisches Institut, Kiel, Germany

(P1B=8) The involvement of proteases in the protection of Synechocystis sp. PCC 6803 from environmental stresses. (Abstract 401)
Myles Barker^*,1, Remco De Vries¹, Marko Boehm¹, Josef Komenda², Peter Nixon¹, ¹ Department of Biological Sciences, Imperial College London, South Kensington Campus, London, UK² Laboratory of Photosynthesis, Institute of Microbiology, Opatovicky mlyn, Trebon, Czechia

(P1B-9) The role of prohibitins in Synechocystis sp. PCC 6803. (Abstract 402)
Marko Boehm^*,1, Myles Barker¹, Remco de Vries¹, Peter Nixon¹, ¹ Department of Biological Sciences, London, United Kingdom

(P1B-10) The roles of the PsbS protein and carotenoids in the regulation of light harvesting in green plants. (Abstract 403)
Sophie Crouchman^*,1, Alexander Ruban¹, Peter Horton¹, ¹ University of Sheffield, Sheffield, United Kingdom

(P1B-11) Photosynthesis without Lutein: a molecular analysis of the photosynthetic apparatus in the -cyclase mutant of Arabidopsis thaliana. (Abstract 404)
Luca Dall'Osto^*,1, Michel Havaux², Chiara Lico³, Giovanni Giuliano³, Roberto Bassi⁴, ¹ Dipartimento scientifico e tecnologico, Verona, Italy² CEA/Cadarache, DSV, DEVM, Saint-Paul-lez-Durance, France³ ENEA, Casaccia Res Ctr, Rome, Italy⁴

(P1B-12) Photoprotective role of anthocyanins regulating PSII activity of Setcreasea purpurea exposed to excessive light energy. (Abstract 405)
David Dewez^*,1, Philippe Juneau², Radovan Popovic¹, ¹ University of Quebec in Montreal, Montreal, Quebec, CANADA² University of British Columbia, Vancouver, British Columbia, CANADA

(P1B-13) Over-reduction of stroma and the intersystem chain upon illumination of photoinhibitory light. (Abstract 406)
Tsuyoshi Endo^*,1, Toshiharu Shikanai², Fumihiko Sato¹, ¹ Graduate School of Biostudies, Kyoto University, Kyoto, JAPAN² Graduate School of Bioresource and Bioenvironment, Kyusyu University, Fukuoka, JAPAN

(P1B-14) Low molecular weight antioxidants and photosynthesis. (Abstract 407)
Christine Foyer^*,1, Graham Noctor², ¹ Crop Performance and Improvement Division, Harpenden, Hertfordshire, U.K.² Institut de Biotechnologie de Plantes, Paris, France

(P1B-15) Analysis of electron transfer and PSII repair in cytochrome b₅₅₉ mutants of Chlamydomonas reinhardtii. (Abstract 408)
E. Franco^*,1, M. Hamilton¹, Z. Deak², I. Vass², P. Nixon¹, ¹ Department of Biological Sciences, Imperial College London, ., London, UK²

(P1B-16) Ultraviolet radiation affects xanthophylls cycle activity in the diatom Thalassiosira weissflogii. (Abstract 409)
Ernesto Garcia-Mendoza^*,1, Nicole Dijkman², Rüdiger Röttgers ³, ¹ Departamento de Oceanografía Biológica/CICESE, Ensenada, Mexico² Centre for Estuarine and Marine Ecology/NIOO, Yerseke, The Netherlands³ Institute for Coastal Research/GKKS, Geesthacht, Germany

(P1B-17) P700⁺ dark-reduction in leaves of Cucumis sativus L. photoinhibited at chilling temperature. (Abstract 410)
Sridharan Govindachary^*,1, Caroline Bigras¹, Alain Gauthier¹, Johanne Harnois¹, Robert Carpentier¹, ¹ Groupe de Recherche en Énergie et Information Biomoléculaires, Trois-Rivières, Québec, Canada

(P1B-18) Photo-oxidative stress and protective mechanisms: The importance of thermal energy dissipation and tocopherol. (Abstract 411)
Thomas Grasses^*,1, Bernhard Grimm², Dario Leister³, Peter Jahns¹, ¹ Heinrich Heine University of Duesseldorf, Duesseldorf, Germany² Humboldt University of Berlin, Berlin, Germany³ Max Planck Institute for Plant Breeding Research, Koeln, Germany

(P1B-19) Studies of oligomerisation and life time of the cyanobacterial small Cab-like proteins (SCPs/HLIPs). (Abstract 412)
Miguel Hernandez^{*,1, 2}, Christiane Funk², Wim Vermaas¹, ¹ School of Life Sciences and Center for the Study of Early Events in Photosynthesis (Arizona State University) Box 874501, Tempe, Arizona, USA² Department of Biochemistry and Umeå Plant Science Center, Umeå University, Umeå, Sweden

(P1B-20) The photosynthetic characteristics of rice leaves with low Fv/Fm by low temperature and high irradiance. (Abstract 413)
Naoki Hirotsu^*,1, Amane Makino¹, Satoshi Yokota, Tadahiko Mae, ¹ Department of Applied Plant Science, Graduate School of Agricultural Sciences, Sendai, Japan

(P1B-21) Does photodamage to Photosystem II complexes control electron transport during photoinhibition and recovery? (Abstract 414)
Dmytro Kornyeyev^*,1, Barry Logan², A. Scott Holaday¹, ¹ Department of Biological Sciences, Lubbock, TX, U.S.A.² Department of Biology, Brunswick, ME, U.S.A.

(P1B-22) Regulation of violaxanthin de-epoxidation. (Abstract 415)
Peter Jahns^*,1, Antje Wehner¹, Stefanie Storf², Susanne Macko¹, Harald Paulsen², Stephan Hobe², Volkmar Schmid², ¹ Plant Biochemistry, University of Düsseldorf, Universitätsstrasse 1, Düsseldorf, Germany² Botanical Institute, University of Mainz, Müllerweg 6, Mainz, Germany

(P1B-23) Characterisation of Arabidopsis plants overexpressing -carotene hydroxylase. (Abstract 416)
Matt Johnson^*,1, Paul Davison, Erik Murchie, Mark Wentworth, Peter Horton, ¹ Department of Molecular Biology & Biotechnology, Sheffield, United Kingdom

(P1B-24) Acclimation to conditions that promote excess excitation energy and hypersensitive disease defence response are functionally and genetically linked. (Abstract 417)
Alfonso Mateo¹, Per Mühlenbock¹, Christine Chi-Chen Chang¹, Christine Rustérucci², Barbara Karpinska¹, Jane Parker³, Philip Mullineaux², Stanislaw Karpinski^*,1, ¹ Dept. of Botany, Stockholm University, Lilla Frescativ. 5, Frescati, STOCKHOLM, Sweden² Department of Disease and Stress Biology, John Innes Centre, Colney, Norwich, U.K.³ Department of Plant-Microbe Interactions, Max-Planck Institute for Plant Breeding Research, Cologne, Germany

(P1B-25) Structure and function of the orange carotenoid protein. (Abstract 418)
Cheryl Kerfeld¹, David Krogmann^*,2, Michael Sawaya¹, Todd Yeates¹, ¹ Molecular Biology Institute, Los Angeles, CA, USA² Department of Biochemistry, West Lafayette, IN, USA

(P1B-26) Photoprotection, photosynthesis and growth in Arabidopsis genotypes with differing levels of PsbS expression. (Abstract 419)
Barry Logan^*,1, Samuel Terry¹, Krishna Niyogi², ¹ Biology Department, Brunswick, Maine, USA²

(P1B-27) Protective functions of tocopherols from lipid peroxidation in concert with carotenoids in Synechocystis sp. strain PCC 6803. (Abstract 420)
Hiroshi Maeda^*,1, Yumiko Sakuragi², Donald Bryant², Dean DellaPenna¹, ¹ Department of Biochemistry and Molecular Biology, East Lansing, MI, USA² Department of Biochemistry and Molecular Biology, University Park, PA, USA

(P1B-28) CP29 is required for repair of Photosystem II in Chlamydomonas reinhardtii. (Abstract 421)
Jun Minagawa^*,1, Ayumi Kanno¹, ¹ Inst. of Low Temp. Sci., Sapporo, Hokkaido, Japan

(P1B-29) Repair of photodamaged Photosystem II is inhibited by NaCl at transcription and translation of PsbA genes in Synechocystis. (Abstract 422)
Sachio MIYAIRI^{*,1, 2}, Suleyman ALLAKHVERDIEV^{1, 3}, Yoshitaka NISHIYAMA^{1, 4}, Norio MURATA¹, ¹ National Institute for Basic Biology, Japan² National Institute of Advanced Industrial Science and Technology, Japan³ Institute of Basic Biological Problems RAS, Russia⁴ Ehime University, Japan

(P1B-30) Photosystem II mobilisation and redistribution induced by high light: visualising the PSII repair cycle in vivo? (Abstract 423)
Mary Sarcina¹, Conrad Mullineaux^*,1, ¹ Department of Biology, London, UK

(P1B-31) Monochromatic light-induced effects on Photosystem II identified the primary event of photodamage. (Abstract 424)
Norio Murata^*,1, Norikazu Ohnishi¹, Shunichi Takahashi¹, Suleyman Allakhverdiev^{1, 2}, Shoichi Higashi¹, Masakatsu Watanabe¹, Yoshitaka Nishiyama^{1, 3}, ¹ National Institute for Basic Biology, Okazaki, Japan² Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region, Russia³ Ehime University, Matsuyama, Japan

(P1B-32) Fragmentation of the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase by reactive oxygen species occurs in vivo. (Abstract 425)
Ryohei Nakano^*,1, Hiroyuki Ishida¹, Amane Makino¹, Tadahiko Mae¹, ¹ Department of Applied Plant Science, Graduate School of Agricultural Sciences, Sendai, Japan

(P1B-33) Recovery from photoinhibition in the low-light adapted psychrophilic green alga, Chlamydomonas raudensis (uwo 241). (Abstract 426)
Tessa Pocock^*,1, Dominic Rosso¹, Stefan Falk², Norman Huner¹, ¹ Department of Biology, London, Ontario, Canada²

(P1B-34) Exogenous salicylic acid application decreases the effects of chilling injury in rice plants. (Abstract 427)
Hongxu Ren^*,1, Kenji Kurata¹, ¹ Department of Biological and Environmental Engineering, Tokyo, Japan

(P1B-35) Crystallization and preliminary crystallographic analysis of monodehydroascorbate radical reductase from cucumber. (Abstract 428)
Satoshi Sano^*,1, You-Na Kang², Hiroko Shigemizu¹, Nobuhiko Morishita¹, Hye-Jin Yoon³, Kazumi Saito¹, Kozi Asada⁴, Bunzo Mikami², ¹ Laboratory of Chemistry of Biological Function, Graduate School of Agriculture, Kyoto, Japan² Laboratory of Food Quality Design and Development, Uji, Kyoto, Japan³ Structural Proteomics Laboratory, Seoul, Korea⁴ Department of Biotechnology, Fukuyama, Hiroshima, Japan

(P1B-36) The role of tocopherols in germination and seedling development in Arabidopsis. (Abstract 429)
Scott Sattler^*,1, Dean DellaPenna¹, ¹ Dept. of Biochemistry and Molecular Biology, East Lansing, MI, USA

(P1B-37) Characterisation of the ascorbate peroxidase activity in the chloroplast lumen of Arabidopsis thaliana. (Abstract 430)
Maria Schubert^*,1, Wolfgang Schroder², ¹ Department of Narural Science, Huddinge, Sweden² Department of Biochemistry, Umeå, Sweden

(P1B-38) Global regulation of photosynthesis genes in response to oxidative stress in the cyanobacterium Synehchocystis sp. PCC 6803. (Abstract 431)
Abhay Singh¹, Hong Li¹, Louis Sherman^*,1, ¹ Purdue University, West Lafayette, IN, USA

(P1B-39) Identification of genes involved in tolerance to oxidative stress by activation tagging. (Abstract 432)
Takahisa Ogawa¹, Yayoi Ueda¹, Noriki Fujiwara¹, Kazuya Yoshimura^{1, 2}, Shigeru Shigeoka^*,1, ¹ Department of Food and Nutrition, Faculty of Agriculture, Kinki University, 3327-204 Nakamachi, Nara, Japan² Graduate School of Biological Sciences, Nara Institute of Science Technology 8916-5 Takayama Nara, Ikoma, Japan

(P1B-40) The FtsH protease is involved in the repair of Photosystem II after damage by UV-B radiation in Synechocystis 6803. (Abstract 433)
Cosmin Sicora^{*,1, 2}, Otilia Cheregi², Peter Kos², Peter Nixon³, Imre Vass², ¹ Department of Biology, Mount Allison University, Sackville, NB, Canada² Institute of Plant Biology, Biological Research Center, Szeged, Hungary³

(P1B-41) Study of the Mehler reaction under excessive illumination in Photosystem II preparations. (Abstract 434)
Irina Strizh^*,1, Galina Lysenko¹, Konstantin Neverov², ¹ Plant Physiology Department, Faculty of Biology, Moscow, RUSSIA² A.N.Bach Institute of Biochemistry RAS, Moscow, RUSSIA

(P1B-42) Protective effect of supplemental white light on ultraviolet-B exposure induced impairment in cyanobacterium spirulina platensis: Formation of air vacuoles as a possible protective. (Abstract 435)
Rajagopal Subramanyam^{1, 2}, Cosmin Sicora¹, Zsuzsanna Várkonyi¹, Mustardy László¹, Prasanna Mohanty^*,3, ¹ Institute of Plant Biology, Biological Research Center, Hungarian Academy of Sciences, Szeged, Hungary² School of Life Sciences and Center for the Study of Early Events in Photosynthesis, Arizona State University, Tempe, Arizona, USA³ Regional Plant Resource Center, Bhubaneswar, Orissa, India

(P1B-43) Partitioning and quenching of excitation energy in winter acclimated evergreen conifer Scots pine. (Abstract 436)
Dmitry Sveshnikov^*,1, Ingo Ensminger², Alexander Ivanov³, Douglas Campbell⁴, Gunnar Öquist¹, ¹ Department of Plant Physiology, Umeå, Sweden² Max-Planck-Institut für Biogeochemie, Jena, Germany³ Department of Biology, London, Ontario, Canada⁴ Department of Biology, Sackville, New Brunswick, Canada

(P1B-44) Impairment of energy utilization for the Calvin cycle triggers inhibition of PSII repair cycle. (Abstract 437)
Shunichi Takahashi^*,1, Norio Murata¹, ¹ National Institute for Basic Biology, Myodaiji, Okazaki, 444-8585, Japan

(P1B-45) Coordinated network of biotic and abiotic stress responses in Arabidopsis thaliana . (Abstract 438)
Mercedes Tiemblo^*,1, Barbara Karpinska¹, ¹ Stockholm University, Department of Botany, Stockholm, Sweden

(P1B-46) Photosynthesis and photoprotection in novel tomato mutants with altered xanthophyll composition. (Abstract 439)
Qiang Wang^*,1, Navot Galpaz¹, Itzhak Ohad², Joseph Hirschberg¹, ¹ Departments of Genetics, Jerusalem, Israel²

(P1B-47) Quality control of Photosystem II: Heat-induced cleavage of the reaction center D1 protein. (Abstract 440)
Suguru Uchida¹, Satoshi Ohira¹, Hiroki Mori¹, Noriko Morita¹, Yasusi Yamamoto^*,1, ¹ Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan

(P1B-48) The function of the small Cab-like proteins. (Abstract 441)
Danny Yao^{*,1, 2}, Peter Stenlund¹, Wim Vermaas², Christiane Funk¹, ¹ Department of Biochemistry, Umeå University, Umeå, Sweden² School of Life Sciences and Center for the Study of Early Events in Photosynthesis, Tempe, AZ, USA

(P1B-49) Accumulation of large aggregates of chlorophyll-binding protein IsiA that are not associated with Photosystem I in a psaFJ- mutant of the cyanobacterium Synechocystis sp. PCC 6803. (Abstract 442)
Nataliya Yeremenko^*,1, Roman Kouil², Janne Ihalainen³, Sandrine D’Haene³, Martin Hagemann⁴, Egbert Boekema², Jan Dekker³, Hans Matthijs¹, ¹ Aquatic Microbiology, Amsterdam, the Netherlands² Department of Biophysical Chemistry, Groningen, the Netherlands³ Division of Physics and Astronomy, Amsterdam, the Netherlands⁴ Pflanzenphysiologie, Rostock, Germany

(P1B-50) Expression of Arabidopsis SR protein in response to various types of environmental stresses. (Abstract 443)
Kazuya Yoshimura^{*,1, 2}, Noriaki Tanabe², Minako Asano², Akiho Yokota¹, Shigeru Shigeoka², ¹ Graduate School of Biological Sciences, Nara Institute of Science Technology, Nara, Ikoma, Japan² Department of Food and Nutrition, Faculty of Agrigulture, Kinki University, Nara, Nara, Japan

(P1B-51) Chlamydomonas mutants sustain growth under lethal treatments with very high light or reactive oxygen species. (Abstract 7444)
Britta Forster^*,1, C. Barry Osmond¹, Barry Pogson¹, ¹ School of Biochemistry & Molecular Biology, Canberra, ACT, Australia