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Ozone-sulfur dioxide synergism produces symptoms of chlorotic dwarf of eastern white pine

Journal Article · · Phytopathology; (United States)
OSTI ID:5319253
;

Chlorotic dwarf of eastern white pine (Pinus strobus) results from air pollution injury to foliage of genetically susceptible trees. The product of field symptoms on susceptible ramets was related directly to ambient levels of single and multiple pollutants in white pine plantations. Ozone and sulfur dioxide, independently or synergistically, promote early symptoms of needle mottling and premature defoliation in the chlorotic dwarf syndrome. With continued chlorophyll breakdown and needle loss as observed in long-term fumigation runs, the advanced symptoms of chlorotic dwarf, primarily dwarfing, can be expected to occur, since growth is a function of photosynthetic activity. Results obtained suggest that the etiology of other physiogenic needle blights of white pine may be explained similarly by gaseous synergisms. When recorded levels of single gases alone are insufficient to damage trees, they may combine and cause injury before either pollutant in itself would do damage.

Research Organization:
Dept. of Agriculture, Delaware, OH
OSTI ID:
5319253
Journal Information:
Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 59; ISSN PHYTA
Country of Publication:
United States
Language:
English

Similar Records

Air pollution and the chlorotic dwarf disease of eastern white pine
Journal Article · Wed Dec 31 23:00:00 EST 1969 · For. Sci.; (United States) · OSTI ID:6863508
Etiology of chlorotic dwarf of eastern white pine
Journal Article · Fri Oct 01 00:00:00 EDT 1965 · Phytopathology; (United States) · OSTI ID:6383868
Impact of air pollution on eastern white pine: the chlorotic dwarf disease. [Pinus strobus]
Journal Article · Sat Nov 30 23:00:00 EST 1968 · J. Air Pollut. Control Assoc.; (United States) · OSTI ID:5405353

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLOROPHYLL
CONIFERS
ETIOLOGY
GROWTH
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INJURIES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYTOCHROMES
PIGMENTS
PINES
PLANT DISEASES
PLANT GROWTH
PLANTS
POLLUTION
PORPHYRINS
SENSITIVITY
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SYMPTOMS
SYNERGISM
SYNTHESIS
TOXICITY
TREES