Light and CO sub 2 effects on photosynthesis and growth in Kudzu

Conference · Tue May 01 00:00:00 EDT 1990 · Plant Physiology, Supplement; (USA)

OSTI ID:5724974

Schweder, M; Bowes, G ^[1]; Cure, J ^[2]

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1. Univ. of Florida, Gainesville (USA)
2. Duke Univ., Durham, NC (USA)

Kudzu (Pueraria lobata Willd.) was grown for 28 days under four permutations of light (1,500 or 450 {mu}mol quanta m{sup {minus}2} s{sup {minus}1}) and CO{sub 2} (700 or 350 {mu}L L{sup {minus}1} CO{sub 2}). Total biomass and leaf area were up to 55% and 52% respectively greater in the high CO{sub 2} treatments. When measured at the growth CO{sub 2} concentration, photosynthetic rates showed little reduction over the 28 day period, and remained up to 29% higher in the high CO{sub 2} treatments. Under high light, soluble protein was 27% greater in the plants grown at high CO{sub 2}. Neither light nor CO{sub 2} had a significant effect on the initial or total rubisco activities. However, phosphoribulokinase activity was decreased under the high CO{sub 2} treatments. These data indicate that photosynthesis in kudzu shows little acclimation when grown at elevated CO{sub 2}.

• OSTI ID: 5724974
• Report Number(s): CONF-9007196-; CODEN: PPYSA
• Journal Information: Plant Physiology, Supplement; (USA), Vol. 93:1; Conference: Annual meeting of the American Society of Plant Physiologists, Indianapolis, IN (USA), 29 Jul - 2 Aug 1990; ISSN 0079-2241
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
RIBULOSE DIPHOSPHATE CARBOXYLASE
METABOLISM
VISIBLE RADIATION
BIOLOGICAL EFFECTS
CARBON DIOXIDE
PHOSPHOTRANSFERASES
PHOTOSYNTHESIS
CARBON COMPOUNDS
CARBON OXIDES
CARBON-CARBON LYASES
CARBOXY-LYASES
CHALCOGENIDES
CHEMICAL REACTIONS
ELECTROMAGNETIC RADIATION
ENZYMES
LYASES
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS-GROUP TRANSFERASES
PHOTOCHEMICAL REACTIONS
RADIATIONS
SYNTHESIS
TRANSFERASES
550500* - Metabolism