Ozone suppression of white pine net photosynthesis. [Pinus strobus]

Journal Article · Wed Dec 01 04:00:00 EST 1971 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1971.10469596· OSTI ID:5434715

Botkin, D B; Smith, W H; Carlson, R W

Reduction in rates of net photosynthesis following exposure to ozone was observed in eastern white pine saplings prior to the development of visible injury. Branches exposed to consecutive doses of 50-80 pphM ozone for 4 hr and 80-90 pphM ozone for 3 hr appeared to have suppressed net photosynthetic rates but results were confounded by diurnal rate variation. Photosynthetic rates of treated branches returned to normal levels following this initial ozone exposure. A second ozonation involving dosages of 90-100 pphM for 5 and 3 hr was sufficient to reduce rates of net photosynthesis by approximately 80%. 13 references, 1 figure.

• Research Organization: Yale Univ., New Haven, CT
• OSTI ID: 5434715
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 21:12; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
CHEMICAL REACTIONS
CONIFERS
DAILY VARIATIONS
INHIBITION
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PINES
PLANTS
POLLUTION
SENSITIVITY
SYNTHESIS
TREES
VARIATIONS