Relationship between leaf antioxidants and ozone injury in Nicotiana tabacum ‘Bel-W3’ under environmental conditions in São Paulo, SE – Brazil

Esposito, Marisia Pannia; Ferreira, Maurí­cio Lamano; Sant'Anna, Silvia Maria Romano; Domingos, Marisa; Souza, Sílvia Ribeiro de

doi:10.1016/j.atmosenv.2008.10.006

Cited by 27 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many researches report that ozone stress may affect the activity of enzymes in plant antioxidant system (Mahalingam et al, 2006;Iriti and Faoro, 2008;Esposito et al, 2009) and the contents of non-enzyme materials (Holopainen and Kainulainen, 1997;Conklin and Barth, 2004;Singh et al, 2010), causing serious injury (Pina and Moraes, 2010;Sarkar and Agrawal, 2010). Ozone stress has great influence on the production of crops, and may cause a reduction in crop production of 5e15%, or over 20% in some crops (Cho et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Visible injury and nitrogen metabolism of rice leaves under ozone stress, and effect on sugar and protein contents in grain

Huang¹,

Sui²,

Wang³

et al. 2012

Atmospheric Environment

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Visible injury and nitrogen metabolism of rice leaves under ozone stress, and effect on sugar and protein contents in grain

Huang¹,

Sui²,

Wang³

et al. 2012

Atmospheric Environment

View full text Add to dashboard Cite

“…The physical and chemical processes in the atmosphere of megacities and surrounding regions have been in the focus of numerous studies (see, e.g. Wang et al, 2006;de Foy et al, 2007;Lei et al, 2008;Miyakawa et al, 2008;Nunnermacker, et al, 2008;Esposito et al, 2009;Singh et al, 2009). To properly simulate these processes and to estimate the effects of air pollutant emissions in megacities on both local air quality and composition of the atmosphere on regional and global scales, atmospheric models should be provided with accurate information on emissions of air pollutants and their temporal variability.…”

Section: Introductionmentioning

confidence: 99%

Multi-annual changes of NO<sub>x</sub> emissions in megacity regions: nonlinear trend analysis of satellite measurement based estimates

et al. 2010

View full text Add to dashboard Cite

Abstract. Hazardous impact of air pollutant emissions from megacities on atmospheric composition on regional and global scales is currently an important issue in atmospheric research. However, the quantification of emissions and related effects is frequently a difficult task, especially in the case of developing countries, due to the lack of reliable data and information. This study examines possibilities to retrieve multi-annual NO x emissions changes in megacity regions from satellite measurements of nitrogen dioxide and to quantify them in terms of linear and nonlinear trends. By combining the retrievals of the GOME and SCIAMACHY satellite instrument data with simulations performed by the CHIMERE chemistry transport model, we obtain the time series of NO x emission estimates for the 12 largest urban agglomerations in Europe and the Middle East in the period from 1996 to 2008. We employ then a novel method allowing estimation of a nonlinear trend in a noisy time series of an observed variable. The method is based on the probabilistic approach and the use of artificial neural networks; it does not involve any quantitative a priori assumptions. As a result, statistically significant nonlinearities in the estimated NO x emission trends are detected in 5 megacities (Bagdad, with independent air quality monitoring data. A good quantitative agreement between the linear trends in the simulated and measured near surface NO x concentrations is found in London.

show abstract

“…The pattern of observed changes was depended on the cultivar, exposure sites and the year of study. Esposito et al (2009) have shown that the activity of SOD and peroxidases (POD) in leaves of tobacco 'Bel W3' exposed to ozone in São Paolo city increased with elevated ozone concentrations and plant response was closely related to meteorological conditions. Our results revealed that the activity of all examined antioxidative enzymes was the highest in 2010 which could be due to the higher ambient air temperature, solar radiation and tropospheric ozone concentration noted during that year.…”

Section: Discussionmentioning

confidence: 99%

Archives of Environmental Protection

Bandurska¹,

Borowiak²,

Zielezińska³

2018

View full text Add to dashboard Cite

Tropospheric ozone is a harmful air pollutant which may cause oxidative stress in plant cells, leading to biochemical and physiological changes and yield reduction. The aim of the study was to examine the cumulative effect of long-term ozone stress on the activity of antioxidative enzymes in leaves of ozone sensitive and resistant tobacco cultivar growing at the sites of various ozone concentrations. The one-month experiment was conducted in the 2009, 2010 and 2011 growing seasons with different meteorological conditions and ozone concentrations. The activity of SOD, APX and GuPX was measured four times at weekly intervals. The highest tropospheric ozone concentration was recorded in 2010 along with high level of solar radiation and temperature. The enhanced ozone level caused the increase in the activity of all examined enzymes. However, at more elevated ozone level the activity of all enzymes was higher in sensitive (Bel W3) than resistant (Bel B) tobacco cultivar. On the other hand, at lower ozone level the activity of examined enzymes was rather similar in both cultivars or even higher in ozone-resistant one, which was especially valid for SOD. A positive correlation between the activity of all enzymes and ozone concentration was shown in both cultivars. The presented results show that meteorological conditions modify tropospheric ozone concentration and real plant response to this environmental pollutant. It is highly important to interpret week-by-week plant response and environmental conditions bearing in mind the cumulative ozone effect resulting from previous weeks conditions.

show abstract

Relationship between leaf antioxidants and ozone injury in Nicotiana tabacum ‘Bel-W3’ under environmental conditions in São Paulo, SE – Brazil

Cited by 27 publications

References 38 publications

Visible injury and nitrogen metabolism of rice leaves under ozone stress, and effect on sugar and protein contents in grain

Visible injury and nitrogen metabolism of rice leaves under ozone stress, and effect on sugar and protein contents in grain

Multi-annual changes of NO<sub>x</sub> emissions in megacity regions: nonlinear trend analysis of satellite measurement based estimates

Archives of Environmental Protection

Contact Info

Product

Resources

About

Relationship between leaf antioxidants and ozone injury in Nicotiana tabacum ‘Bel-W3’ under environmental conditions in São Paulo, SE – Brazil

Cited by 27 publications

References 38 publications

Visible injury and nitrogen metabolism of rice leaves under ozone stress, and effect on sugar and protein contents in grain

Visible injury and nitrogen metabolism of rice leaves under ozone stress, and effect on sugar and protein contents in grain

Multi-annual changes of NO&lt;sub&gt;x&lt;/sub&gt; emissions in megacity regions: nonlinear trend analysis of satellite measurement based estimates

Archives of Environmental Protection

Contact Info

Product

Resources

About

Multi-annual changes of NO<sub>x</sub> emissions in megacity regions: nonlinear trend analysis of satellite measurement based estimates