(P6B-1) Daylength effects on starch degradation rate and maltose metabolism. (Abstract 531)
Yan Lu^*,1, Thomas Sharkey¹, ¹ University of Wisconsin-Madison, Madison, Wisconsin, USA

(P6B-2) Effect of altered capacity for feedback de-excitation. (Abstract 532)
Carsten Külheim^*,1, Oskar Skogström¹, Stefan Jansson¹, ¹ Umeå Plant Science Center, Umeå, Västerbotten, Sweden

(P6B-3) Photosynthetic acclimation in rice leaves to free-air CO₂ enrichment (FACE) related to both RuBP carboxylation limitation and RuBP regeneration limitation. (Abstract 533)
Gen-Yun Chen¹, Zhen-Hua Yong², Yi Liao³, Yue Chen⁴, Dao-Yun Zhang⁵, Hai-Bo Zhang⁶, Jian-Guo Zhu⁷, Da-Quan Xu^*,, ¹ 300 Fengling Road, Shanghai, China² 300 Fengling Road, Shanghai, China³ 300 Fengling Road, China⁴ 300 Fengling Road, China⁵ 300 Fengling Road, China⁶ 300 Fengling Road, China⁷ 71 Beijing east Road, Nanjing, China

(P6B-4) Regulation of light-harvesting complex gene expression by high light in Chlamydomonas reinhardtii. (Abstract 534)
M. Anwaruzzaman^*,, Krishna Niyogi,

(P6B-5) Altered light acclimation in transgenic potato (Solanum tuberosum L. var. Desiree) plants with decreased leaf-ferredoxin content. (Abstract 535)
Jan Backhausen^*,1, Simone Holtgrefe¹, Sabrina Jung¹, Renate Scheibe¹, ¹ Pflanzenphysiologie, Osnabrueck, Germany

(P6B-6) Preliminary characterization of polyphenol oxidase from Larrea tridentata leaves. (Abstract 536)
David Becker^*,1, John Golbeck², ¹ Dept. Biology, Claremont, CA, USA² Dept. Biochemistry and Molecular Biology, USA

(P6B-7) Thermal tolerance of photosynthesis is enhanced in antisense tobacco plants with a high Rubisco activase:Rubisco ratio. (Abstract 537)
Steven Crafts-Brandner^*,1, Michael Salvucci¹, ¹ USDA-ARS Western Cotton Research Laboratory, Phoenix, AZ, US

(P6B-8) Characterization of the cyanobacterial mutants that cannot grow under high-light condition. (Abstract 538)
Tamaki Fujimori^*,1, Hanayo Sato¹, Kintake Sonoike¹, ¹ Department of Integrated Biosciences, Kashiwa City, Chiba Prefecture, Japan

(P6B-9) Trapping of a light-induced primary intermediate in photocycle of a blue light sensory BLUF FAD-protein Tll0078 of Thermosynechococcus elongatus BP-1. (Abstract 539)
Yoshimasa Fukushima^*,1, Koji Okajima², Yutaka Shibata¹, Masahiko Ikeuchi², Shigeru Itoh¹, ¹ Division of Material Science, Graduate School of Science, Nagoya, Aichi, Japan² Department of Life Science, Graduate School of Arts and Sciences, Tokyo, Japan

(P6B-10) Arabidopsis PSI-D and PSI-F mutants differ in gene regulation response to redox pertubation. (Abstract 540)
Anna Haldrup^*,1, Dario Leister², Stefan Jansson³, Kasper Busk¹, Henrik Scheller¹, ¹ Plant Biochemistry Lab., Dept. Plant Biology, Frederiksberg C, Denmark² Abteilung für Pflanzensüchtung und Ertragsphysiologie, Köln, Germany³ Umeå Plant Science Center, Dept. Plant Physiology, Ümeå, Sweden

(P6B-11) Characterization of Arabidopsis thaliana mutants with altered nonphotochemical quenching of chlorophyll fluorescence. (Abstract 541)
Mieko Higuchi^*,1, Kintake Sonoike¹, ¹ Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa-shi, Chiba, Japan

(P6B-12) ssl0564 is involved in a novel mechanism of redox regulation in Synechocystis sp. PCC 6803. (Abstract 542)
Kinu Nakamura¹, Yukako Hihara^*,1, ¹ Department of Biochemistry and Molecular Biology, Saitama University, Saitama, Japan

(P6B-13) Site-specific proteolytic processing of LHCA3 is a key event in the remodeling of light-harvesting antenna under iron-deficiency in Chlamydomonas reinhardtii. (Abstract 543)
Michael Hippler^{*,1, 2}, Blandine Rimbault², Einar Stauber², ¹ Department of Biology, Philadelphia, PA, USA² Plant Physiology, Jena, Germany

(P6B-14) Possible involvement of heterotrimeric G protein in phytochrome A signal transduction for induction of photosynthesis gene expression in etiolated rice seedlings. (Abstract 544)
Noritoshi Inagaki^*,1, Yukiko Fujisawa², Takeshi Yoshizumi³, Satoru Tokutomi⁴, Zhao Li³, Naoki Yamamoto⁵, Yukimoto Iwasaki², Minami Matsui³, ¹ Photosynthesis Laboratory, Tsukuba, Japan² Department of Bioscience, Matsuoka-cho, Japan³ Genomic Sciences Center, Yokohama, Japan⁴ Research Institute for Advanced Science and Technology, Sakai, Japan⁵ Department of Biology, Tokyo, Japan

(P6B-15) A nuclear-encoded sigma factor, AtSig6, plays a key role in early chloroplast development in cotyledons. (Abstract 545)
Yoko Ishizaki^*,1, Yuichi Tsunoyama², Kyoko Hatano³, Kohei Ando⁴, Ko Kato⁴, Atsuhiko Shinmyo⁴, Yoichi Nakahira¹, Takashi Shiina¹, ¹ Faculty of Human and Environment, Japan² Radioisotope Research Center, Japan³ Graduate School of Human and Environmental Studies, Japan⁴ Nara Institute of Science and Technology, Japan

(P6B-16) Nonphotochemical quenching is induced differently by high-light and low CO₂ signal in Chlamydomonas reinherdtii. (Abstract 546)
Masakazu Iwai^*,1, Jun Minagawa¹, ¹ Institute of Low Temperature Science, Sapporo, Japan

(P6B-17) Transcriptional profiles and structural models of the Synechocystis sp. PCC 6803 Deg proteases. (Abstract 547)
Tove Jansén^*,1, Heidi Kidron², Hanna Taipaleenmäki¹, Tiina Salminen², Pirkko Mäenpää¹, ¹ 1Department of Biology, University of Turku, FIN-20014 Turku, Finland² Department of Biochemistry and Pharmacy, Åbo Akademi University, FIN-20521 Turku, Finland

(P6B-18) Stress-induced filament fragmentation of Calothrix elenkinii (cyanobacteria) is facilitated by death of high-fluorescence cells. (Abstract 548)
David Kaftan^{*,1, 2, 3}, Frantisek Adamec^{2, 3}, Ladislav Nedbal^{2, 3}, ¹ Photon System Instruments Ltd., Brno, Czech Republic² Laboratory of Applied Photobiology & Bioimaging, Nove Hrady, Czech Republic³ Institute of Physical Biology, Nove Hrady, Czech Republic

(P6B-19) Both CP43' and Flavodoxin play a role in protection from heat and oxidative stresses. (Abstract 549)
Kouji Kojima^*,1, Hitoshi Nakamoto¹, ¹ Saitama university, Saitama, Japan

(P6B-20) Post-transcriptional control of LHCII protein expression in Chlamydomonas reinhardtii. (Abstract 550)
Jan Mussgnug¹, Mary Hamilton², Conrad Mullineaux³, Michael Hippler⁴, Jörg Nickelsen⁵, Peter Nixon², Olaf Kruse^*,1, ¹ University of Bielefeld, Department of Biology, Bielefeld, Germany² Imperial College London, Department of Biological Sciences, London, U.K.³ University College London, Department of Biology, London, U.K.⁴ University of Pennsylvania, Department of Biology, Philadelphia, USA⁵ University of Bochum, Department of Biology, Bochum, Germany

(P6B-21) Novel two nuclear genes, SIG5/6, encoding potential plastid sigma factors of RNA polymerase in rice. (Abstract 551)
Yoshiki KUBOTA^*,1, Munehiko ASAYAMA¹, Makoto SHIRAI¹, ¹ IBARAKI University, AMI, IBARAKI, JAPAN

(P6B-22) cfa1 is involved in the initial activation of photosynthetic electron transport under high light condition. (Abstract 552)
Mari Kurosawa^*,1, Mieko Higuchi¹, Hideki Kudo¹, Hiroshi Ozaki¹, Kintake Sonoike¹, ¹ Department of Integrated Biosciences, Kashiwa, Chiba, Japan

(P6B-23) Salt-induced response in ascorbate peroxidase and catalase in rice ( Oryza sativa ). (Abstract 553)
Jeung-suk Koo^*,1, Byoung Yong Moon², Chin Bum Lee¹, ¹ Biology Department, Busan, Korea² Biology Department, Kimhae, Kyoungsangnamdo, Korea

(P6B-24) NaCl-induced redox-independent phosphorylation of light harvesting chlorophyll a/b proteins in Dunaliella salina thylakoid membranes. (Abstract 554)
Xian-De Liu^*,1, Yun-Gang Shen², ¹ Shanghai Institute of Plant Physiology and Ecology,Chinese Academy of Sciences, Shanghai, China² Shanghai Institute of Plant Physiology and Ecology,Chinese Academy of Sciences, Shanghai, China

(P6B-25) Light-induced structural changes of BLUF domain of AppA for a signaling state. (Abstract 555)
Shinji Masuda^*,1, Koji Hasegawa¹, Jun Kikuchi², Taka-aki Ono¹, ¹ Laboratory for Photobiology (1), Photodynamics Research Center, RIKEN, JAPAN² Genomic Sciences Center, RIKEN Yokohama Institute, JAPAN

(P6B-26) Lutein-epoxide cycle and roles of xanthophylls in LHCs. (Abstract 556)
Shizue Matsubara^{*,1, 2, 6}, Maria Naumann^{3, 6}, Robin Martin^{4, 6}, Caroline Nichol^{5, 6}, Uwe Rascher^{2, 4, 6}, Tomas Morosinotto⁷, Roberto Bassi⁷, Barry Osmond^{6, 8}, ¹ Photobioenergetics Group, Research School of Biological Sciences, Canberra, ACT, Australia² Phytosphaere Institut, Juelich, Germany⁶ Biosphere 2 Center, Oracle, AZ, USA³ Institut fuer Botanik, Darmstadt, Germany⁴ Department of Global Ecology, Stanford, CA, USA⁵ School of GeoSciences, Edinburgh, Scotland, UK⁷ Dipartimento Scientifico e Tecnologico, Verona, Italy⁸ School of Biochemistry and Molecular Biology, Canberra, ACT, Australia

(P6B-27) Effect of xanthophyll composition on higher plants Photosystem I-light harvesting I complex. (Abstract 557)
Tomas Morosinotto^{*,1, 3}, Matteo Ballottari¹, Jean Alric, Luca Dall'Osto¹, Roberto Bassi^{1, 3}, ¹ Dipartimento scientifico e tecnologico, Università di Verona, Verona, Italy³ Université Aix-Marseille II, LGBP- Faculté des Sciences de Luminy, Marseille, France

(P6B-28) Promoter analysis of genes encoding subunits of Photosystem I in Synechocystis sp. PCC 6803. (Abstract 558)
Masayuki Muramatsu^*,1, Kintake Sonoike¹, Yukako Hihara², ¹ Department of Integrated Biosciences, Graduate School of Frontier Sciences, Chiba, Japan² Department of Biochemistry and Molecular Biology, Saitama, Japan

(P6B-29) Interactions between gene expression and leaf development during acclimation of photosynthesis to irradiance in rice. (Abstract 559)
Erik Murchie^*,1, Stella Hubbart¹, Shaobing Peng², Peter Horton¹, ¹ Department of Molecular Biology and Biotechnology, Sheffield, South Yorkshire, United Kingdom² Crop, Soil and Water Sciences, Manila, Metro Manila, Philippines

(P6B-30) Firefly luciferase as a vital reporter for gene expression in tobacco chloroplasts. (Abstract 560)
Yoichi Nakahira^*,1, Go Takeba¹, Takashi Shiina¹, ¹ Faculty of Human and Environment, Kyoto, Japan

(P6B-31) Characterization of a plastid sigma factor AtSIG5 responsible for psbD light-responsive transcription. (Abstract 561)
Mikio Nozoe^*,1, Yoko Ishizaki¹, Yuichi Tsunoyama², Yuki Tsubokura¹, Ko Kato³, Atsuhiko Shinmyo³, Yoichi Nakahira¹, Takashi Shiina¹, ¹ Faculty of Human and Environment, Kyoto city, Japan² Radioisotope Research Center, Kyoto, Japan³ Nara Institute of Science and Technology, Nara city, Japan

(P6B-32) Bacteriophytochromes control the expression of spectrally distinct light harvesting complexes in Rhodopseudomonas palustris. (Abstract 562)
Miroslav Papiz^*,1, Anthony Fordham-Skelton¹, Katie Evans^{1, 2}, Colin Reynolds², Anna Lawless¹, Hiten Mistry¹, ¹ CCLRC Daresbury Laboratory, Warrington, Cheshire, UK²

(P6B-33) Retrograde plastid redox signals in the expression of nuclear genes for chloroplast proteins of Arabidopsis thaliana. (Abstract 563)
Vidal Fey¹, Raik Wagner¹, Katharina Bräutigam¹, Thomas Pfannschmidt^*,1, ¹ Friedrich-Schiller-University Jena, Department for Plant Physiology, Dornburger Str. 159, Jena, Germany

(P6B-34) Chloroplast redox sensors and response regulators. (Abstract 564)
Sujith Puthiyaveetil^*,1, Jens Forsberg², Jörgen Strom¹, John Allen¹, ¹ Plant Biochemistry, Lund, Sweden² Medical Biochemistry and Microbiology, Uppsala, Sweden

(P6B-35) Ferritin functions as an iron buffer in the green alga Chlamydomonas reinhardtii. (Abstract 565)
Blandine Rimbault^*,1, Stefan Rensch¹, Michael Hippler^{1, 2}, ¹ Lehrstuhl für Pflanzenphysiologie, FSU, Jena, Germany² Department of Biology, University of Pennsylvania, Philadelphia, PA, USA

(P6B-36) Gene expression during light adaptation in Arabidopsis thaliana. (Abstract 566)
Elke Rosche^*,1, Susanne von Caemmerer¹, Murray Badger¹, ¹ Molecular Plant Physiology Group, Australia

(P6B-37) Characterization of factors related to photosystem stoichiometry in response to environmental changes in Synechocystis sp. PCC 6803. (Abstract 567)
Hanayo Sato^*,1, Kintake Sonoike¹, ¹ Department of Integrated Bioscience, Kashiwa city, Chiba, Japan

(P6B-38) Effects of over-expression of BNCBF transcription factors on photosynthetic cold stress tolerance of Brassica napus. (Abstract 568)
Leonid Savitch^*,1, Ghislaine Allard¹, Nick Tinker¹, Laurian Robert¹, Norman Huner², Motoaki Seki³, Kazuo Shinozaki³, Jas Singh¹, ¹ Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, Ottawa, Ontario, Canada² Department of Biology, The University of Western Ontario, London, Ontario, Canada³ Biological Resources Division, Japan International Research Centre for Agricultural Sciences, Tsukuba, Ibaraki, Japan

(P6B-39) NblC - A novel cyanobacterial modulator of pigment level during nutrient limitation. (Abstract 569)
Eleonara Sendersky, Roxane Lahmi¹, Judith Shaltiel¹, Alexander Perelman¹, Rakefet Schwarz^*,1, ¹ Faculty of Life Sciences, Ramat-Gan, Israel

(P6B-40) Verification of real-time PCR for differential expression analysis of SPS gene family from Arabidopsis thaliana. (Abstract 570)
Luxmanan Selvanesan^{*,1, 2}, Elspeth MacRae², Julian Eaton-Rye¹, ¹ Department of Biochemistry, Dunedin, New Zealand² The Horticulture and Food Research Institute of New Zealand, Auckland, New Zealand

(P6B-41) TCP34, an unique response regulator-like TPR protein of higher plant chloroplasts. (Abstract 571)
Anna Sokolenko^*,1, Petra Weber², Hrvoje Fulgosi³, Irina Piven¹, Lenard Müller⁴, Karin Krupinska⁴, Reinhold G. Herrmann¹, ¹ Department Biologie I, Botanik, 80638 Munich, Germany² Institut für Neuropathologie, 81377 Munich, Germany³ Department of Molecular Genetics, Zagreb, Croatia⁴ Institut für Botanik, 24098 Kiel, Germany

(P6B-42) Molecular and functional characterization of an antiporter Na⁺/H⁺ of the cyanobacterium Synechococcus sp PCC 7942. (Abstract 572)
Maria Billini^*,1, Vicky Sophianopoulou¹, Kostas Stamatakis¹, ¹ Institute of Biology, Aghia Paraskevi, Attikis, Greece

(P6B-43) RNA helicase, CrhR of Synechocystis sp. PCC 6803 is required for repair of photo-damaged Photosystem II under cold stress. (Abstract 573)
Jogadhenu Prakash^*,, Yu Kanesaki, Iwane Suzuki, Suleyman Allakhverdiev, Norio Murata,

(P6B-44) High-light-dependent expression of Lhc-like genes encoding distant relatives of light-harvesting chlorophyll-a/b proteins in Chlamydomonas reinhardtii. (Abstract 574)
Haruhiko Teramoto^*,1, Tomoko Itoh¹, Taka-aki Ono¹, ¹ Laboratory for Photo-Biology (1), Photodynamics Research Center, RIKEN, 519-1399 Aoba, Sendai, Japan

(P6B-45) Circadian rhythm of the facultative cyanobacterium Plectonema boryanum in the dark. (Abstract 575)
Kazuki Terauchi^*,1, Mitsunori Katayama¹, Yuichi Fujita², Takao Kondo¹, ¹ Graduate School of Science, Nagoya University, Nagoya, Japan² Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan

(P6B-46) The plastid targeted GTP-binding protein, AtOBG1 is essential for embryo development in Arabidopsis. (Abstract 576)
Tetsuya Umeda^*,1, Yoichi Nakahira¹, Go Takeba¹, Takashi Shiina¹, ¹ Faculty of Human and Environment, Kyoto City, Japan

(P6B-47) Isolation and characterization of mutants in Photosystem I degradation. (Abstract 577)
Jianying Zhang^*,1, Galina Gulis¹, Walter Evans¹, Nathan Henderson¹, Kevin Redding¹, ¹ Depts. of Chemistry and Biological Sciences; University of Alabama, 120 Lloyd Hall, 6th Ave, Tuscaloosa, AL, U.S

(P6B-48) The expression profile of rice genes in planta related to the protection and regulation mechanisms against abiotic stress in the light. (Abstract 578)
Ismayil Zulfugarov^*,1, Byoung Chull Chung², Hong Jin Hwang³, Choong-Hwan Ryu⁴, Byoung Yong Moon⁵, Gynheung An⁶, Choon-Hwan Lee⁷, ¹ Department of Molecular Biology, Pusan National University, Busan, Republic of Korea² Department of Molecular Biology, Pusan National University, Busan, Republic of Korea³ Department of Molecular Biology, Pusan National University, Busan, Republic of Korea⁴ Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea⁵ Department of Biology, Inje University, Gimhae, Republic of Korea⁶ 2Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea⁷ Department of Molecular Biology, Pusan National University, Busan, Republic of Korea

(P6B-49) Phosphorylation of DNA binding proteins in chloroplasts of Sinapis alba after acclimation to different light qualities. (Abstract 7579)
Vidal Fey^*,1, Yagut Allahverdiyeva², Virpi Paakkarinen², Eva-Mari Aro², Thomas Pfannschmidt¹, ¹ FSU Jena, Dept. of Plant Physiology, Jena, Germany² University of Turku, Dept. of Plant Physiology and Molecular Biology, Turku, Finland