Effects of subambient and elevated CO[sub 2] on Rubisco in C[sub 3] and C[sub 4] plants

Conference · Tue Jun 01 04:00:00 EDT 1993 · Bulletin of the Ecological Society of America; (United States)

OSTI ID:6201886

Tissue, D T; Griffin, K L; Thomas, R B; Strain, B R ^[1]

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1. Duke Univ., Durham, NC (United States)

Amaranthus retroflexus (C4) and Abutilon theophrasti (C3) were grown from seed at 4 CO[sub 2] concentrations: 15 Pa (Pleistocene minimum), 27 Pa (preindustrial), 35 Pa (current), and 70 Pa (future) in the Duke Phytotron under high light, nutrient and water conditions. Net photosynthesis at the growth CO[sub 2] concentration increased with elevated CO[sub 2] for C[sub 3] and C[sub 4] Plants. Total Rubisco activity and content increased linearly with CO[sub 2] for A. theophrasti. For A. retroflexus, Rubisco activity and content increased 22% for plants grown at ambient CO[sub 2] compared with 15 Pa and decreased 21% for plants grown at 70 Pa compared with ambient CO[sub 2] plants. Results indicate Rubisco limitation to photosynthesis during the Pleistocene minimum and different C[sub 3] and C[sub 4] plant response to historic and future CO[sub 2] conditions.

• OSTI ID: 6201886
• Report Number(s): CONF-930798--
• Conference Information: Journal Name: Bulletin of the Ecological Society of America; (United States) Journal Volume: 74:2
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
C4 SPECIES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
FORECASTING
GROWTH
OXIDES
OXYGEN COMPOUNDS
PALEOCLIMATOLOGY
PALEONTOLOGY
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANT GROWTH
PLANTS
SYNTHESIS