Protection of Plants Against Airborne Oxidants: Cucumber Seedlings at Extreme Ozone Levels
- 1 May 1962
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 37 (3), 261-266
- https://doi.org/10.1104/pp.37.3.261
Abstract
A variety of oxidation inhibiting or reducing substances (indole, IAA, tryptophane, mescaline, hydrazine, isonicotinyl hydrazine ascorbic acid, octadecene-1 and DPNH) protect cucumber seedlings against acute ozone exposures (2.5-5.8 mg/1 for 30 min.), the observed protective activities including both increased survival of seedling populations and reduced inhibition of hypocotyl section elongation. Compounds with little or no antioxidant activity failed to protect against ozone damage. C0Cl2 intensified ozone damage, its other protective abilities notwithstanding. A comparison of root immersion, whole seedling immersion, and aerial application showed that protection of the aerial portion of the plant can be effected by compounds supplied entirely through the roots. In general, prolonged contact between whole seedlings or hypocotyls and protectant solutions was necessary. The presence of the test compounds in the ambient medium at best prevented injury or growth inhibition only to a slight degree. The significance of these observations with respect to differences in ozone resistance among plants and a possible relation between growth promoting and ozone-protecting activities is discussed briefly.This publication has 10 references indexed in Scilit:
- A Study of the Toxic Effects of Elevated Oxygen Tension on PlantsPhysiologia Plantarum, 1959
- Ozone in High Concentrations as Cause of Tobacco Leaf InjuryScience, 1959
- Effect of Ozone and Ozonated 1-hexene on Respiration and Photosynthesis of Leaves.Plant Physiology, 1958
- The Standardization of Poa Annua as an Indicator of Smog Concentrations. I. Effects of Temperature, Photoperiod, and Light Intensity during Growth of the Test-Plants.Plant Physiology, 1957
- Air pollution & the public health. I. The problem of great cities; acute effects, fog disasters.1957
- The Effect of Gaseous Ozone, Hexene, and Their Reaction Products upon the Respiration of Lemon FruitPhysiologia Plantarum, 1956
- Oxygen Poisoning and X-irradiation: A Mechanism in CommonScience, 1954
- Studies on Oxygen Poisoning: Protective Effect of -MercaptoethylamineExperimental Biology and Medicine, 1954
- Effects of Exposures of Seeds to Various Physical Agents. II. Physiological and Chemical Aspects of Heat Injury in the Red Kidney Bean Embryo. Contributions from the Hull Botanical Laboratory 640Botanical Gazette, 1953
- Investigation on Injury to Plants from Air Pollution in the Los Angeles AreaPlant Physiology, 1952