Effect of pan on certain photosynthetic reactions
The effect of the atmospheric oxidant, peroxyacetyl nitrate (PAN) on photosynthetic phosphorylation, NADP plus reduction, and CO/sub 2/ fixation by chloroplasts prepared from spinach and bean plants has been studied. When this gaseous oxidant was passed through reaction mixtures in the light, inhibition of the photosynthetic reactions occurred. Inhibition in ATP and NADPH formation and the fixation of C-1402 was prevented by the addition of ascorbate to the reaction mixture. Also NADP plus reduction was maintained by adding either excess photosynthetic pyridine nucleotide reductase (PPNR) or heat inactivated PPNR preparations. Gassing the individual components, chloroplasts or PPNR in the light or dark prior to their use in a complete reaction, did not cause inhibition. 14 references, 1 figures, 8 tables.
- OSTI ID:
- 5720982
- Report Number(s):
- CONF-640212-
- Journal Information:
- Arch. Environ. Health; (United States), Journal Name: Arch. Environ. Health; (United States) Vol. 10; ISSN AEHLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ASCORBIC ACID
ATP
BIOLOGICAL EFFECTS
BIOSYNTHESIS
CARBON DIOXIDE FIXATION
CELL CONSTITUENTS
CHEMICAL REACTIONS
CHLOROPLASTS
ESTERS
FOOD
INHIBITION
LEGUMINOSAE
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NUCLEOTIDES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXYACETYL NITRATE
PHASEOLUS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
RESPONSE MODIFYING FACTORS
SPINACH
SYNTHESIS
VEGETABLES
VITAMINS