The importance of moisture in ozone phytotoxicity

Leone, Ida A.; Brennan, E.

doi:10.1016/0004-6981(69)90059-6

Cited by 11 publications

(3 citation statements)

References 17 publications

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“…8 - 9 The present study confirms that at low relative humidities the stomatal resistance to gaseous diffusion is greater in both the bean and tobacco plants, but, in addition, the lower injury observed in the dry atmosphere may be compounded by the greater degree of closure during ozonation, particularly in the resistant cultivars. Such an interaction between stomatal aperture and atmospheric humidity when the gaseous pollutant sulfur dioxide is present has been observed by Mansfield and Majernik.…”

Section: Discussionsupporting

confidence: 78%

“…Atmospheric humidity has also been observed to alter the response of plants to O 3 ; at low relative humidities O3 injury was less than at high humidities in a range of plant species. 8 ' 9 Permeability studies suggested that the reduced injury was attributable to decreased stomatal apertures at the low humidities. For plants to be useful in cleaning the atmosphere of O 3 the stomata must remain open in the presence of O3.…”

Section: Importance Of Moisture On Stomatal Behavior Of Plants Subjecmentioning

confidence: 99%

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Importance of Moisture on Stomatal Behavior Of Plants Subjected to Ozone

Rich

Turner

1972

Journal of the Air Pollution Control Association

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Section: Discussionsupporting

confidence: 78%

Section: Importance Of Moisture On Stomatal Behavior Of Plants Subjecmentioning

confidence: 99%

Importance of Moisture on Stomatal Behavior Of Plants Subjected to Ozone

Rich

Turner

1972

Journal of the Air Pollution Control Association

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“…closure, which in turn reduced injury (26,30,33,35). Plants grown at 35% relative humidity were injured less by both 0 3 and S 0 2 than when grown at 75% relative humidity (Table 2).…”

Section: Economic Lossesmentioning

confidence: 98%

Mode of Action of Air Pollutants in Injuring Horticultural Plants

Tibbitts

Kobriger

1983

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Evidence for the Repair of Ozone‐induced Membrane Injury

Sutton

Ting

1977

American J of Botany

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The increase in [14C]‐2‐deoxy‐D‐glucose uptake by leaf discs 24 hr after fumigation was used as a measure of ozone injury to pinto bean leaves (Phaseolus vulgaris). This method showed that the primary leaves were most affected by ozone when plants were 10 to 12 days old, which coincided with the time of maximum leaf necrosis. However, 8‐day‐old plants, which had no visible leaf injury, still showed a higher uptake rate than controls, indicating that injury occurred at the cellular level. In these younger plants, uptake was shown to return to normal over a 5 day period. Moreover, the rate of this “repair” was retarded by cold or continuous darkness, enhanced by continuous light, and very markedly increased by glucose applied to the leaves. The timing of the glucose application was not critical, nor did H2O or mannitol have an effect. The results suggest that ozone injury at the cellular level can be repaired by energy‐dependent processes so that necrosis of the leaf tissue does not occur. These experiments also show that conditions and treatments after ozone exposure can alter the degree of ozone injury.

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The importance of moisture in ozone phytotoxicity

Cited by 11 publications

References 17 publications

Importance of Moisture on Stomatal Behavior Of Plants Subjected to Ozone

Importance of Moisture on Stomatal Behavior Of Plants Subjected to Ozone

Mode of Action of Air Pollutants in Injuring Horticultural Plants

Evidence for the Repair of Ozone‐induced Membrane Injury

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