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Title: Ozone injury to the foliage of Pinus ponderosa

Abstract

Needles of ponderosa pine treated with 0.5 ppm ozone for 9-18 days under field conditions developed a chlorotic mottle, terminal die-back, and abscission similar to the needle symptoms of chlorotic decline. The chlorophyll content of needles treated with ozone for 18 days was generally less than that of ambient air controls. The chlorophyll content of needles treated with filtered air was greater than that of control needles and the amount of needle abscission was markedly reduced. Continuous air sampling for a 16-day period indicated an average daily peak oxidant concentration of 0.09 ppm in the stands of declining ponderosa pine. Smog has been associated with plant damage in the nearby San Bernardino Valley for at least 10 years. This evidence suggests that the ozone component of photochemical smog may be the principal cause of the chlorotic decline of ponderosa pine in the San Bernardino Mountains.

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of California, Berkeley
OSTI Identifier:
5366543
Resource Type:
Journal Article
Journal Name:
Phytopathology; (United States)
Additional Journal Information:
Journal Volume: 53
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; OZONE; BIOLOGICAL EFFECTS; PINES; INJURIES; AIR POLLUTION; BIOLOGICAL STRESS; CALIFORNIA; CHLOROPHYLL; EXPERIMENTAL DATA; LEAVES; PHOTOSYNTHESIS; SMOG; CARBOXYLIC ACIDS; CHEMICAL REACTIONS; CONIFERS; DATA; FEDERAL REGION IX; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; INFORMATION; NORTH AMERICA; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; PHYTOCHROMES; PIGMENTS; PLANTS; POLLUTION; PORPHYRINS; SYNTHESIS; TREES; USA; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)

Citation Formats

Miller, P R, Parmeter, Jr, J R, Taylor, O C, and Cardiff, E A. Ozone injury to the foliage of Pinus ponderosa. United States: N. p., 1963. Web.
Miller, P R, Parmeter, Jr, J R, Taylor, O C, & Cardiff, E A. Ozone injury to the foliage of Pinus ponderosa. United States.
Miller, P R, Parmeter, Jr, J R, Taylor, O C, and Cardiff, E A. Sun . "Ozone injury to the foliage of Pinus ponderosa". United States.
@article{osti_5366543,
title = {Ozone injury to the foliage of Pinus ponderosa},
author = {Miller, P R and Parmeter, Jr, J R and Taylor, O C and Cardiff, E A},
abstractNote = {Needles of ponderosa pine treated with 0.5 ppm ozone for 9-18 days under field conditions developed a chlorotic mottle, terminal die-back, and abscission similar to the needle symptoms of chlorotic decline. The chlorophyll content of needles treated with ozone for 18 days was generally less than that of ambient air controls. The chlorophyll content of needles treated with filtered air was greater than that of control needles and the amount of needle abscission was markedly reduced. Continuous air sampling for a 16-day period indicated an average daily peak oxidant concentration of 0.09 ppm in the stands of declining ponderosa pine. Smog has been associated with plant damage in the nearby San Bernardino Valley for at least 10 years. This evidence suggests that the ozone component of photochemical smog may be the principal cause of the chlorotic decline of ponderosa pine in the San Bernardino Mountains.},
doi = {},
journal = {Phytopathology; (United States)},
number = ,
volume = 53,
place = {United States},
year = {1963},
month = {9}
}