Foliar Symptoms of Acute Ozone Injury and Exposure Response Characteristics of Select Native Perennials
type: CreativeWork
description: Twenty seven perennial species native to the Eastern Temperate Forests Level I Ecoregion were exposed to an acute ozone (O3) treatment consisting of a target peak O3 concentration of 2.0 ppm for 30 minutes in a closed chamber environment, during the summer of 2010. Plants were evaluated for visible foliar injury symptoms and symptoms were described and photographically documented. Ten of the 27 species developed visible foliar injury in which interspecific and intraspecific response to O3 was observed. A severity index was used to compare response to acute ozone exposure for the ten species displaying visible foliar injury. Species showing visible foliar injury in descending order of severity index were Coreopsis tripteris L. (tall tickseed), Coreopsis palmata Nutt. (stiff tickseed), Penstemon cobaea Nutt. (cobaea beardtongue), Solidago nemoralis Aiton (gray goldenrod), Monarda fistulosa L. (wild bergamot), Silphium integrifolium Michx (wholeleaf rosinweed), Oligoneuron rigidum (L.) Small var. rigidum (stiff goldenrod), Rudbeckia missouriensis Engelm. ex C.L. Boynt.(Missouri orange coneflower), Penstemon pallidus Small (pale beardtongue), and Solidago speciosa Nutt. (showy goldenrod). A range of symptoms was observed including red to purple stipple and tan to yellow or brown flecking; bronzing, leaf margin necrosis, and bifacial necrotic lesions. Subsequently, in June of 2011, four native Coreopsis species (C. lanceolata, C. palmata, C. tinctoria, and C. tripteris), were exposed to four acute ozone (O3) treatment levels with target peak O3 concentrations of 1.2, 1.7, 2.2, and 2.7 ppm, for 30 minutes in a closed chamber environment. Severity index was used as the criterion for comparing ozone susceptibilities among species. All four species showed foliar injury symptoms following the highest target peak exposure level (2.7 ppm). Two of the four species (Coreopsis palmata and C. tripteris) exhibited foliar injury symptoms at the lowest target peak exposure level (1.2 …
abstract: Twenty seven perennial species native to the Eastern Temperate Forests Level I Ecoregion were exposed to an acute ozone (O3) treatment consisting of a target peak O3 concentration of 2.0 ppm for 30 minutes in a closed chamber environment, during the summer of 2010. Plants were evaluated for visible foliar injury symptoms and symptoms were described and photographically documented. Ten of the 27 species developed visible foliar injury in which interspecific and intraspecific response to O3 was observed. A severity index was used to compare response to acute ozone exposure for the ten species displaying visible foliar injury. Species showing visible foliar injury in descending order of severity index were Coreopsis tripteris L. (tall tickseed), Coreopsis palmata Nutt. (stiff tickseed), Penstemon cobaea Nutt. (cobaea beardtongue), Solidago nemoralis Aiton (gray goldenrod), Monarda fistulosa L. (wild bergamot), Silphium integrifolium Michx (wholeleaf rosinweed), Oligoneuron rigidum (L.) Small var. rigidum (stiff goldenrod), Rudbeckia missouriensis Engelm. ex C.L. Boynt.(Missouri orange coneflower), Penstemon pallidus Small (pale beardtongue), and Solidago speciosa Nutt. (showy goldenrod). A range of symptoms was observed including red to purple stipple and tan to yellow or brown flecking; bronzing, leaf margin necrosis, and bifacial necrotic lesions. Subsequently, in June of 2011, four native Coreopsis species (C. lanceolata, C. palmata, C. tinctoria, and C. tripteris), were exposed to four acute ozone (O3) treatment levels with target peak O3 concentrations of 1.2, 1.7, 2.2, and 2.7 ppm, for 30 minutes in a closed chamber environment. Severity index was used as the criterion for comparing ozone susceptibilities among species. All four species showed foliar injury symptoms following the highest target peak exposure level (2.7 ppm). Two of the four species (Coreopsis palmata and C. tripteris) exhibited foliar injury symptoms at the lowest target peak exposure level (1.2 …
author: Frey, Susan Denise
keywords: Biological sciences, Foliar symptoms, Native plants, Ozone injury, Perennials, Horticulture, Other Plant Sciences
date published: 2011-12-01T08:00:00Z
date modified: 2026-07-24T00:58:26Z
provider: University of Arkansas
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Arkansas