Ambient Ozone and Plant Health

Krupa, Sagar V.; McGrath, M. T.; Andersen, Christian P.; Booker, Fitzgerald L.; Burkey, Kent O.; Chappelka, Arthur H.; Chevone, Boris I.; Pell, Eva J.; Zilinskas, Barbara A.

doi:10.1094/pdis.2001.85.1.4

Cited by 205 publications

(128 citation statements)

References 7 publications

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“…Leaves' visible symptoms were classified according to Krupa (2001) both on fumigated plants and on fi eld experiment. Th e presence of the visible symptoms was analyzed during the entire experimental period and photographed for characterization.…”

Section: Visible Symptomsmentioning

confidence: 99%

“…Th e troposphere ozone (O 3 ) is a phytotoxic secondary pollutant of easy diff usion, being the most important, damaging, and oxidant among the photochemical pollutants (Klumpp et al 2001;Krupa et al 2001). It enters the leaf through stomata and immediately decays into diff erent reactive oxygen species (ROS), leading to an oxidative burst which might be related to the formation of lesion points as observed in sensitive species (Günthardt-Goerg & Vollenweider 2007).…”

Section: Introductionmentioning

confidence: 99%

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Structural responses of Ipomoea nil (L.) Roth 'Scarlet O'Hara' (Convolvulaceae) exposed to ozone

2011

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) is an important photochemical pollutant due to its high reactivity and phytotoxicity. Plants can show microscopic damage caused by this gas before the detection of visible symptoms. Th e present study aimed to improve our knowledge concerning the eff ects of O 3 on Ipomoea nil L. cv. Scarlet O'Hara leaves. Plants were exposed at a pollutant site in São Paulo city, with high levels of O 3, and fumigation with O 3 was also carried out. In plants exposed to the environment, without visible symptoms, hypersensitive response-like (HR-like) and protrusions in the cell walls was observed, indicating oxidative processes; in leaves with visible symptoms, there is epidermis breakdown and the palisade and spongy parenchyma collapse. Fumigation confi rmed that microscopic damage occurring in the plants exposed to the environment was linked to the symptoms caused by O 3 . Th ese results demonstrate that Ipomoea nil responds to stress induced by O 3 with specifi c structural changes that precede visible symptoms.

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Section: Visible Symptomsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural responses of Ipomoea nil (L.) Roth 'Scarlet O'Hara' (Convolvulaceae) exposed to ozone

2011

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“…Ozone is generally recognized to be the most relevant pollutant for forests, affecting tree species in different ways: visible injury, reductions in biomass, changes in biomass partitioning, or a higher susceptibility to pathogen attack (Krupa et al, 2000). In its interaction with other pollutants and with climate change, it can also adversely affect important forest services (production, protection or regulatory services like water provision) .…”

Section: Introductionmentioning

confidence: 99%

Responses of evergreen and deciduous Quercus species to enhanced ozone levels

Calatayud

Cerveró

Calvo

et al. 2011

Environmental Pollution

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t r a c tPlants of one evergreen oak (Quercus ilex) and three deciduous oaks (Q. faginea, with small leaves; Q. pyrenaica and Q. robur, with large leaves) were exposed both to filtered air and to enhanced ozone levels in Open-Top Chambers. Q. faginea and Q. pyrenaica were studied for the first time. Based on visible injury, gas exchange, chlorophyll content and biomass responses, Q. pyrenaica was the most sensitive species, and Q. ilex was the most tolerant, followed by Q. faginea. Functional leaf traits of the species were related to differences in sensitivity, while accumulated ozone flux via stomata (POD 1.6 ) partly contributed to the observed differences. For risk assessment of Mediterranean vegetation, the diversity of responses detected in this study should be taken into account, applying appropriate critical levels.

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“…Ozone (O 3 ) is currently the most important air pollutant that negatively affects growth of both agricultural and native species in most parts of the world (Ashmore, 2005;Benton et al, 2000;Clarke et al, 1990;Fuhrer and Booker, 2003;Karnosky et al, 2007;Krupa et al, 2001;Wang et al, 2007a). Limited measurements suggest that pre-industrial ground-level O 3 concentration ([O 3 ]) was about 10 ppb (Volz and Kley, 1988).…”

Section: Introductionmentioning

confidence: 99%