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. 1981 Mar;67(3):545–549. doi: 10.1104/pp.67.3.545

Stomatal Response and Leaf Injury of Pisum sativum L. with SO2 and O3 Exposures 1,2

II. INFLUENCE OF MOISTURE STRESS AND TIME OF EXPOSURE

David M Olszyk 1,3, Theodore W Tibbitts 1
PMCID: PMC425722  PMID: 16661711

Abstract

Stomatal response during exposure to SO2 and O3 and subsequent leaf injury were examined in plants of Pisum sativum L. `Alsweet' grown in a peat-vermiculite medium in controlled environment chambers. Plants developing under moisture stress, induced by drying the medium to 50% of field capacity, exhibited greater stomatal closure during exposures and less than one-fourth the necrosis compared to plants developing in a medium maintained at field capacity. Plants under moisture stress had only a slightly more negative plant water potential (≃−4.0 bars) than at field capacity (≃−3.4 bars). Plants exposed to pollutants for 2 hours near the beginning or end of a 16-hour light period had greater stomatal closure during exposures and less leaf necrosis than plants exposed during the middle of the light period.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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