Membrane-associated polypeptides induced in Chlamydomonas by limiting CO sub 2 concentrations

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Plant Physiology; (USA)

DOI:https://doi.org/10.1104/pp.89.1.133· OSTI ID:7190480

Spalding, M H; Jeffrey, M ^[1]

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1. Iowa State Univ., Ames (USA)

Chlamydomonas reinhardtii and other unicellular green algae have a high apparent affinity for CO{sub 2}, little O{sub 2} inhibition of photosynthesis, and reduced photorespiration. These characteristics result from operation of a CO{sub 2}-concentrating system. The CO{sub 2}-concentrating system involves active inorganic carbon transport and is under environmental control. Cells grown at limiting CO{sub 2} concentrations have inorganic carbon transport activity, but cells grown at 5% CO{sub 2} do not. Four membrane-associated polypeptides (M{sub r}, 19, 21, 35, and 36 kilodaltons) have been identified which either appear or increase in abundance during adaptation to limiting CO{sub 2} concentrations. The appearance of two of the polypeptides occurs over roughly the same time course as the appearance of the CO{sub 2}-concentrating system activity in response to CO{sub 2} limitation.

• OSTI ID: 7190480
• Journal Information: Plant Physiology; (USA), Vol. 89:1; ISSN 0032-0889
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CARBON DIOXIDE
BIOLOGICAL EFFECTS
CHLAMYDOMONAS
PHOTOSYNTHESIS
POLYPEPTIDES
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL ADAPTATION
CELL MEMBRANES
ALGAE
CARBON COMPOUNDS
CARBON OXIDES
CELL CONSTITUENTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLOROPHYCOTA
KINETICS
MEMBRANES
MICROORGANISMS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PEPTIDES
PHOTOCHEMICAL REACTIONS
PLANTS
PROTEINS
REACTION KINETICS
SYNTHESIS
UNICELLULAR ALGAE
551000* - Physiological Systems
560300 - Chemicals Metabolism & Toxicology