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Effect of Ozone and Tobacco Streak Virus Alone and in Combination on Nicotiana tabacum. R. A. Reinert, Plant Pathologist, Agricultural Research Service, U. S. Department of Agriculture, North Carolina State University, Raleigh, NC 27607; G. V. Gooding, Jr., Plant Pathologist, Department of Plant Pathology, North Carolina State University. Phytopathology 68:15-17. Accepted for publication 14 June 1977. Copyright © 1978 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-68-15.

The percentage foliar injury on Nicotiana tabacum L. ‘Bel W3’ infected by tobacco streak virus (TSV) and exposed to ozone (O3) was greater than the additive percentage foliar injury to either TSV-infected or O3-exposed plants. The fresh and dry weights of leaves, stems and roots of Bel W3, exposed to O3, infected with TSV, or both were significantly lower than the weights of the same parts from control plants. The growth-inhibiting effects of O3 and TSV were only additive.

Additional keywords: interaction, air pollution, oxidants.