Effects of ozone on foliar leaching in Norway spruce (Picea abies L. Karst): Confounding factors due to NOx production during ozone generation

Brown, Keith A.; Roberts, T. M.

doi:10.1016/0269-7491(88)90159-5

Cited by 99 publications

(40 citation statements)

References 11 publications

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“…Chambers were illuminated by metal-halide lamps providing a photosynthetic photon flux density (PPFD) of 180-200 µmol m −2 s −1 at plant height supplied as a 16 h photoperiod. Air temperature was controlled at a minimum of 18 • C at night, rising to a daytime maximum of 25 • C. Ozone was generated from particulate/charcoal/Purafil -filtered air by electric discharge (Wallace & Tiernan BA.023 Laboratory Ozonator, Tonbridge, Kent, UK), fitted with a limestone scrubber to prevent contamination by higher oxides of nitrogen (Brown & Roberts, 1988). Routine measurements of the nitrogen content of plant material grown in these chambers have verified that contamination with higher oxides of nitrogen is not a problem in these CE chambers (Barnes et al, 1995).…”

Section: Methodsmentioning

confidence: 99%

The effect of ozone fumigation and different Brassica rapa lines on the feeding behaviour of Pieris brassicae larvae

Jøndrup

Barnes

Port

2002

Entomologia Exp Applicata

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Elevated levels of tropospheric ozone and their effects on plants have been studied for a great number of years. Ozone is a gaseous pollutant and acts as a phytotoxin. Even though ozone is known to change the physiology of plants, little attention has been given to the indirect effects of ozone on plant-insect interactions. This paper addresses this question by investigating the interactive effects of ozone and plant genotype on insects. Lines of rapid-cycling Brassica rapa (L.) selected for their contrasting sensitivity to ozone and Pieris brassicae (L.) (Lepidoptera: Pieridae) were used as a model system. The effect of differences in ozone sensitivity and ozone fumigation on the plant's carbon and nitrogen pools, the feeding preference, and behaviour of P. brassicae larvae were investigated. The results show that the plant's susceptibility to ozone interacts in a complex way with ozone induced alterations in the suitability of the plant for the insect. Only the larval performance on the sensitive line was affected by ozone exposure. Biochemical changes in the resistant B. rapa line made the plant a better food source for the insects, since the digestibility of this plant was significantly higher than that of the sensitive line, and the larvae pupated more quickly and were heavier.

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Section: Methodsmentioning

confidence: 99%

The effect of ozone fumigation and different Brassica rapa lines on the feeding behaviour of Pieris brassicae larvae

Jøndrup

Barnes

Port

2002

Entomologia Exp Applicata

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“…Ozone was generated by a silent electrical discharger in dry air, passed through a water trap, and introduced into chambers with an air stream, in which the plants were placed. The water trap eliminated by-products such as N205 produced by an ozone generator with electrical discharges in the air (Brown and Roberts 1988). The concentrations of O3 in the chambers were continuously monitored with UV absorption ozone analyzers (Dashibi, model 1003AH, California, USA) and regulated by a controlling system based on proportional integral derivative (PID) logic (Dylec Co., model DACS-1000, Tokyo).…”

Section: Methodsmentioning

confidence: 99%

Changes in antioxidant levels and activities of related enzymes in rice leaves exposed to ozone

Nouchi

1993

Soil Science and Plant Nutrition

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Changes in the levels of antioxidants such as ascorbate and glutathione and activities of related enzymes in rice leaves exposed to ozone at high or low concentrations were investigated. In rice plants (Oryza sativa L. cv. Koshihikari) exposed to ozone at a high concentration (0.50X 10 -6 m 3 m -3 (0.50 ppm)) for 8 h, L-ascorbate was oxidized while the content of oxidized glutathione (GSSG) increased without the concomitant decrease of the content of reduced glutathione (GSH). In addition, the activities of aseorbate peroxidase (AP), dehydroascorbate reductase (DHA reductase), and superoxide dismutase (SOD) declined, though the glutathione reduetase (GR) activity remained unchanged. A high concentration of ozone was considered to destroy the protection system against active oxygen species, resulting in the injury of the cell structure and functions. On the other hand, in the rice leaves exposed for 5 weeks to ozone at low concentrations (0.05• -~ and 0.10• the amount of Laseorbate and total ascorbate increased significantly by exposure to 0.05 X 10 -6 m 3 m -a O~ while the content of total glutathione (GSH+GSSG) decreased by exposure to 0.10Xl0 -6 m 3 m -30~. Activities of AP, GR, and SOD increased by the exposure to ozone at low concentrations. These reactions may be interpreted as protective responses to prevent or alleviate the damage of rice plants induced by ozone.

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“…From 16 April, 2004 to 1 November, 2005, the seedlings were exposed to charcoal-filtered air or three levels of O3 at 1.0, 1.5 or 2.0 times the ambient concentration, these O3 treatments being designated as CF, O3 1.0, O3 1.5 and O3 2.0, respectively. Ozone was generated from oxygen-enriched dry air by an electrical discharge O3 generator (Oz-24-UA, Ebara Corporation, Japan) and injected into 9 OTCs for O3-exposure through a water trap to remove nitrogen by-products such as N2O5, produced by the O3 generator (Brown and Roberts, 1988). The concentrations of O3 in the 12 OTCs at 90 cm above the floor were continuously monitored at intervals of 12 minutes with a UV absorption O3 analyzer (ML9810, Monitor Labs, USA).…”

Section: Ozone Exposure and Nitrogen Treatmentmentioning

confidence: 99%

Effects of Ozone on the Growth and Photosynthesis of Castanopsis sieboldii Seedlings Grown under Different Nitrogen Loads

Watanabe¹,

Yamaguchi²,

Matsumura³

et al. 2008

J. Agric. Meteorol.

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Effects of ozone on foliar leaching in Norway spruce (Picea abies L. Karst): Confounding factors due to NOx production during ozone generation

Cited by 99 publications

References 11 publications

The effect of ozone fumigation and different Brassica rapa lines on the feeding behaviour of Pieris brassicae larvae

The effect of ozone fumigation and different Brassica rapa lines on the feeding behaviour of Pieris brassicae larvae

Changes in antioxidant levels and activities of related enzymes in rice leaves exposed to ozone

Effects of Ozone on the Growth and Photosynthesis of Castanopsis sieboldii Seedlings Grown under Different Nitrogen Loads

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