(The effects of atmospheric CO/sub 2/ on insect herbivores and their host plants): Progress report

Technical Report · Wed Apr 01 04:00:00 EST 1987

OSTI ID:6597404

Lincoln, D E

Preliminary analysis of two populations of Artemisia tridentata compared leaf chemical and physiological characteristics which influence herbivores. The proportion of sixteen of the volatile compounds differed significantly between the two populations; however, total yield of volatiles did not. This initial survey established the reliability of the procedure to quantitatively monitor plant responses to CO/sub 2/ enrichment and suggests that test samples be restricted to a single population. Four sesquiterpene lactones have been selected for the experimental quantitative HPLC analysis; all peaks have been assigned identities and have demonstrated high degree of reproducibility. Growth of Artemisia under high and low light at three CO/sub 2/ levels demonstrated that this species also undergoes a ''dilution'' of the leaf carbon content and is useful as test species for herbivory response to CO/sub 2/ induced effects. The initial experiment also showed that high irradiance is a necessary growth condition. 10 refs.

• Research Organization: South Carolina Univ., Columbia (USA). Dept. of Biology
• DOE Contract Number: FG09-84ER60255
• OSTI ID: 6597404
• Report Number(s): DOE/ER/60255-3; ON: DE87009369
• Country of Publication: United States
• Language: English

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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
ARTHROPODS
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHROMATOGRAPHY
GRASSHOPPERS
INSECTS
INVERTEBRATES
LIQUID COLUMN CHROMATOGRAPHY
ORGANIC COMPOUNDS
ORTHOPTERA
OXIDES
OXYGEN COMPOUNDS
PLANTS
SEPARATION PROCESSES
SHRUBS
TERPENES