Dosage of Air Pollutants and Damage to Vegetation

Runeckles, V. C.

doi:10.1017/s0376892900004963

Cited by 34 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Devel-oping dose-response functions by placing plants in areas with differing ozone levels has worked for some crops and some geographic areas (Oshima et al 1976). Controlled-environment studies have been useful in describing injury symptoms and elucidating potential effects, but care had to be exercised in extrapolation to field impact (Heagle et al 1973;Runeckles 1974). Exposures in greenhouses have allowed for exposures under sunlight to ambient levels of pollutant (Thompson and Taylor 1969) but still involved considerable change in environmental conditions. Antioxidants.…”

mentioning

confidence: 99%

The Use of Cultivar Yield Data to Estimate Losses Due to Ozone in Peanut

Ensing¹,

Hofstra²,

Adomait³

1986

Can. J. Plant Sci.

View full text Add to dashboard Cite

mentioning

confidence: 99%

The Use of Cultivar Yield Data to Estimate Losses Due to Ozone in Peanut

Ensing¹,

Hofstra²,

Adomait³

1986

Can. J. Plant Sci.

View full text Add to dashboard Cite

“…In response to relating the ozone effects to concentrations averaged at one-hour intervals, which might serve as a substitute for dosage, it is crucial to summarize concentrations in a physiologically significant way (Lefohn, 1992). The exposure index should, in theory, be based on the idea of effective dose (Runeckles, 1974), that is, it should capture the exposure features that are most closely related to the quantity of ozone that is absorbed by the plants. In this case, the absorbed dosage would be the integral of the rate of absorption (flux) over time, which could be determined for ozone by dividing the concentration at the leaf surface by the leaf conductance (Fowler and Cape, 1982).…”

Section: Sa and Ozone Stressmentioning

confidence: 99%

Uncovering the mechanisms of salicylic acid-mediated abiotic stress tolerance in horticultural crops

Yang,

Fang,

Luo

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

Salicylic acid (SA) has been recognized as a promising molecule for improving abiotic stress tolerance in plants due to its ability to enhance antioxidant defense system, and promote root architecture system. Recent research has focused on uncovering the mechanisms by which SA confers abiotic stress tolerance in horticultural crops. SA has been shown to act as a signaling molecule that triggers various physiological and morphological responses in plants. SA regulates the production of reactive oxygen species (ROS). Moreover, it can also act as signaling molecule that regulate the expression of stress-responsive genes. SA can directly interact with various hormones, proteins and enzymes involved in abiotic stress tolerance. SA regulates the antioxidant enzymes activities that scavenge toxic ROS, thereby reducing oxidative damage in plants. SA can also activate protein kinases that phosphorylate and activate transcription factors involved in stress responses. Understanding these mechanisms is essential for developing effective strategies to improve crop resilience in the face of changing environmental conditions. Current information provides valuable insights for farmers and plant researchers, offering new strategies to enhance crop resilience and productivity in the face of environmental challenges. By harnessing the power of SA and its signaling pathways, farmers can develop more effective stress management techniques and optimize crop performance. Plant researchers can also explore innovative approaches to breed or engineer crops with enhanced stress tolerance, thereby contributing to sustainable agriculture and food security.

show abstract

“…Dose can be defined 231 as the exact amount or extent of a given treatment to which a given receptor is subjected, at one time or at stated intervals. A derivation from the concept of dose is the separation of the terms exposure dose (Krupa & Kickert 1987) and effective dose (Runeckles 1974). Exposure dose can be defined as the air concentration of the pollutant over a given duration to which the plant is subjected.…”

Section: The Concept Of Exposure Versus Effective Dosementioning

confidence: 99%

The greenhouse effect: the impacts of carbon dioxide (CO2), ultraviolet-B (UV-B) radiation and ozone (O3) on vegetation (crops)

Krupa

Kickert

1993

Vegetatio

View full text Add to dashboard Cite

A high elevation (2103 m MSL) air quality (CO2, 03, radiation, etc.) monitoring site at Fortress Mountain in the Canadian Rockies (Source: Legge & Krupa 1990). AbstractMan's influence on the 'greenhouse effect,' the heating of the atmosphere due to increasing concentrations of tropospheric trace gases, is of much international concern. Among the climatic variables, elevated levels of carbon dioxide (COz), ultraviolet-B (UV-B)radiation and ozone (O3) are known to have a direct effect on vegetation. Our current knowledge of these effects is mainly based on studies involving single stress mode. Thus, the joint effects of CO2, UV-B and 03 on vegetation are poorly understood. Nevertheless, based on the literature analysis of plant response to individual stress factors, it can be concluded that sorghum, pea, bean, potato, oat, lettuce, cucumber, rice and tomato are among the crop species potentially sensitive to the joint effects of the aforementioned three variables. Similar information for tree species is essentially lacking.At least with some climatic variables such as O3, present modeling efforts of cause-effect relationships have proven to be controversial. While at a regional geographic scale ambient CO2 concentrations appear to be relatively homogeneous, ambient concentrations of 03 exhibit significant temporal and spatial variability. Because of the protective action of 03 against UV-B, similar but inverse temporal and spatial variability is expected in the surface levels of UV-B. Thus, future experimental designs should consider these exposure dynamics and modeling cause-effect relationships should be directed to stochastic processes.

show abstract

Dosage of Air Pollutants and Damage to Vegetation

Cited by 34 publications

References 16 publications

The Use of Cultivar Yield Data to Estimate Losses Due to Ozone in Peanut

The Use of Cultivar Yield Data to Estimate Losses Due to Ozone in Peanut

Uncovering the mechanisms of salicylic acid-mediated abiotic stress tolerance in horticultural crops

The greenhouse effect: the impacts of carbon dioxide (CO2), ultraviolet-B (UV-B) radiation and ozone (O3) on vegetation (crops)

Contact Info

Product

Resources

About