Alterations in growth and chemical constituents of tobacco in response to CO sub 2 enrichment

Journal Article · · Journal of Agricultural and Food Chemistry; (USA)

OSTI ID:6991529

Rufty, Jr, T W; Jackson, D M; Lam, Jr, J J ^[1]; Severson, R F; Snook, M E ^[2]

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1. Department of Agriculture, Oxford, NC (USA)
2. Department of Agriculture, Athens, GA (USA)

Tobacco plants were grown in an enriched CO{sub 2} environment from transplant to maturity to examine alterations in growth and chemistry of leaves. Nutrient availability was progressively decreased, and groups of leaves on the main stem were sampled sequentially to approximate culture conditions in the field. Dry weight accumulation increased in all leaf groups at high CO{sub 2} (700 {mu}L L{sup {minus}1}), with total canopy leaf weight being increased to 162% of the ambient CO{sub 2} (350 {mu}L L{sup {minus}1}) controls. The chemical composition of leaves throughout the canopy was altered substantially. At high CO{sub 2}, the concentrations of nonstructural carbohydrates and polyphenols and leaf surface diterpenes and fatty alcohols all were markedly higher, while concentrations of the primary pyridine alkaloids were lower. The results indicate that future increases in atmospheric CO{sub 2} could have a considerable impact on yield and quality of tobacco.

• OSTI ID: 6991529
• Journal Information: Journal of Agricultural and Food Chemistry; (USA), Journal Name: Journal of Agricultural and Food Chemistry; (USA) Vol. 37:2; ISSN 0021-8561; ISSN JAFCA
• Country of Publication: United States
• Language: English

Related Subjects

550200 -- Biochemistry
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBOHYDRATES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
GROWTH
LEAVES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLANT GROWTH
TOBACCO