(P4C-1) A novel evolutionary lineage of carbonic anhydrase (-class) is a component of the carboxysome shell. (Abstract 631)
Anthony So¹, George Espie^*,1, Eric Williams², Jessup Shively³, Sabine Heinhorst², Gordon Cannon², ¹ Department of Botany, Mississauga, ON, Canada² Department of Chemistry and Biochemistry, Hattiesburg, MS, USA³ Department of Genetics and Biochemistry, Clemson, SC, USA

(P4C-2) Dissolved inorganic carbon transport across the inner chloroplast envelopes of Dunaliella. (Abstract 632)
Arun Goyal^*,1, ¹ Department of Biological Sciences, Box 70703, Johnson City, TN, USA

(P4C-3) Investigation of carbon and light on cyanobacterial toxin production. (Abstract 633)
Douglas Graham^*,1, Linda Lawton¹, ¹ School of Life Sciences, Aberdeen, Scotland UK

(P4C-4) Induction of the hornwort carbon concentrating mechanism. (Abstract 634)
David Hanson^*,1, Camille Puronen¹, Nate McDowell², ¹ Department of Biology, Albuquerque, New Mexico, USA² Earth and Environmental Sciences Division, Los Alamos, New Mexico, USA

(P4C-5) CO₂-responsive-promoter region of intracellular -carbonic anhydrase gene in the marine diatom Phaeodactylum tricornutum. (Abstract 635)
Hisashi Harada^*,1, Maki Ishida¹, Yusuke Matsuda¹, ¹ Graduate School of Science, Kwansei-Gakuin Univ., 2-1 Gakuen, Sanda, Hyogo, Japan

(P4C-6) ABA response in CO₂ insensitive Arabidopsis mutants, ht1 and ht2. (Abstract 636)
Mimi Hashimoto^*,1, Juntaro Negi¹, Koh Iba¹, ¹ Department of Biology, Faculty of Science, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Japan

(P4C-7) Sorting of -carbonic anhydrase into storomal particles in the marine diatom Phaeodactylum tricornutum. (Abstract 637)
Daisuke Nakatsuma¹, Yusuke Matsuda^*,1, ¹ Department of Bioscience, Sanda, Hyogo, Japan

(P4C-8) Low Ci mediated induction of transcripts important for the CO₂-concentrating mechanism is activated by blue light in the cyanobacterium Synechococus elongatus. (Abstract 638)
Patrick McGinn^*,1, Angela MacDonald¹, Meaghan Jones¹, Douglas Campbell¹, ¹ Dept. of Biology and Coastal Wetlands Institute, Sackville, New Brunswick, Canada

(P4C-9) The three carbonic anhydrase families of Chlamydomonas reinhardtii. (Abstract 639)
Mautusi Mitra¹, Catherine Mason¹, Scott Lato¹, Ruby Ynalvez¹, Ying Xiao¹, James Moroney^*,1, ¹ Louisiana State University, Baton Rouge, LA, USA

(P4C-10) A possible role of a small protein with similarity to conserved bacterial proteins in the growth of Chlamydomonas reinhardtii under low CO₂ conditions. (Abstract 640)
Ruby Ynalvez^*,1, Lacey Howard¹, James Moroney¹, ¹ Department of Biological Sciences, Baton Rouge, LA, USA

(P4C-11) Inorganic carbon acquisition in Chlamydomonas sp. under acidic conditions (pH 2.7). (Abstract 641)
Elly Spijkerman^*,,

(P4C-12) Independent expression and functional roles of multiple NDH-1 complexes in Synechocystis sp. PCC 6803. (Abstract 642)
Pengpeng Zhang^*,1, Natalia Battchikova¹, Tove Jansen¹, Jens Appel², Teruo Ogawa³, Eva-Mari Aro¹, ¹ Department of Biology, Turku, Finland² Botanisches Institut, Kiel, Germany³ Bioscience Center, Chikusa, Japan