Effect of peroxyacetyl nitrate on C/sup 14/O/sub 2/ fixation by spinach chloroplasts and pinto bean plants
Photosynthetic CO/sub 2/ fixation in pinto bean plants and in intact spinach chloroplasts was inhibited by peroxyacetyl nitrate, a component of photochemical smog. Addition of ascorbate to the chloroplast-containing reaction mixtures virtually eliminated this inhibition. Exposing the chloroplasts or other components of the reaction, either separately or as a mixture, to peroxyacetyl nitrate in the dark followed by a light period without the oxidant did not effect the C/sup 14/O/sub 2/ fixation process. This inhibition in the intact plant, as well as in the chloroplast, appears to be one of quantitative reduction in the early products of the photosynthesis and not a qualitative change. 19 references, 1 figure, 2 tables.
- Research Organization:
- Univ. of California, Riverside
- OSTI ID:
- 5552606
- Journal Information:
- Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 38:4; ISSN PLPHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Inhibitory effect of peroxyacetyl nitrate on cyclic photophosphorylation by chloroplasts from Black Valentine bean leaves
Influence of benomyl soil treatment on pinto bean plants exposed to peroxyacetyl nitrate and ozone
Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBON DIOXIDE FIXATION
CELL CONSTITUENTS
CHEMICAL REACTIONS
CHLOROPLASTS
ESTERS
FOOD
INHIBITION
LEGUMINOSAE
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXYACETYL NITRATE
PHASEOLUS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
SPINACH
SYNTHESIS
VEGETABLES