Oxidative Stress, the Paradigm of Ozone Toxicity in Plants and Animals

Iriti, Marcello; Faoro, Franco

doi:10.1007/s11270-007-9517-7

Cited by 126 publications

(91 citation statements)

References 158 publications

(158 reference statements)

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“…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

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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

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“…This occurs due to the differential efficiency of antioxidants in neutralizing the noxious effects of ROS to the cells. It is well known that antioxidants of the ascorbate-glutathione cycle play an important role in this defensive process, during both normal metabolic activities, in the photoreduction of the O 2 into the thylakoid or by exogenous reasons and the entrance of ozone to the plant (Burkey et al, 2006;Iriti and Faoro, 2008;De Gara et al, 2010;Foyer and Noctor, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…As a scavenger of radical superoxide, the enzyme superoxide dismutase (SOD) is another important tool to defend plants against oxidative stress, SOD converts O 2 -to H 2 O 2 , and then H 2 O 2 is converted to H 2 O by ascorbate peroxidase (APX), by means of the oxidation of AA or by catalases (CAT) (Iriti and Faoro, 2008;De Gara et al, 2010;Lin et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Seasonal characterization of antioxidant responses in plants of Ipomoea nil cv. Scarlet O'Hara

Ferreira

Domingos²

2012

Braz. J. Biol.

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Reactive oxygen species can be produced in leaf cells during normal aerobic metabolism or in a variety of exogenous factors, which may cause oxidative damage to plants, unless they have an efficient antioxidant defense system, consisting of enzymatic and non-enzymatic substances. This work raised the hypothesis that plants of Ipomoea nil cv. Scarlet O'Hara, a native species and ornamental vine of the tropics, might tolerate oxidative stress factors imposed by natural fluctuations in weather conditions through changes in the antioxidant profile.The objective of this study was to determine the variations in three leaf antioxidants in plants growing inside a greenhouse without air pollutants and exposed to varying meteorological conditions throughout the four seasons of the year and to observe if such variations are related to the oscillations in meteorological factors. Four experimental campaigns were carried out, one in each season of 2006. Each campaign lasted 28 days and started with 45 plants. Ascorbic acid (AA) concentrations and superoxide dismutase (SOD) and peroxidase (POD) activities were determined in leaves of five plants in nine sampling days of each campaign. The antioxidant responses oscillated throughout the year. The highest values were found during the spring. This seasonal antioxidant profile was associated to variations in temperature, relative humidity and global radiation. Plants of this cultivar may then tolerate oxidative stress naturally imposed by meteorological conditions. Keywords: climber plant, ascorbic acid, superoxide dismutase, peroxidase, meteorological factors. Caracterização sazonal de respostas antioxidativas em plantas de Ipomoea nil cv. Scarlet O'Hara ResumoAs espécies reativas de oxigênio podem ser produzidas em células de folhas durante o metabolismo aeróbico normal ou o sob uma diversidade de fatores exógenos que, por sua vez, podem causar danos oxidativos às plantas, a menos que estas tenham um eficiente sistema de defesa antioxidativo, formado por substâncias enzimáticas e não enzimáticas. Neste trabalho, levantou-se a hipótese de que as plantas de Ipomoea nil cv. Scarlet O'Hara, uma espécie trepadeira ornamental e nativa dos trópicos, podem tolerar fatores de estresse oxidativo imposto por oscilações naturais nas condições meteorológicas por meio de mudanças no perfil antioxidativo. Assim, este trabalho objetivou determinar as variações em três espécies antioxidantes foliares em plantas crescidas em casa de vegetação sob ar filtrado e expostas a condições meteorológicas variáveis ao longo das quatro estações do ano de 2006, bem como verificar se tais variações estão relacionadas às oscilações de fatores meteorológicos. Para tanto, realizaram-se quatro campanhas experimentais. Cada campanha durou 28 dias e começou com 45 plantas. Concentrações de ácido ascórbico (AA) e as atividades de superóxido dismutase (SOD) e peroxidase (POD) foram determinadas em folhas de cinco plantas distintas e retiradas da casa de vegetação em nove dias de amostragem de cada campanha. A...

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“…The damaging effects of O 3 are observed in both animal and plant tissues, representing a potential threat to urban populations and also to crop production and the survival of native species in fragile natural ecosystems (Blomberg et al 1999;Biswas et al 2008). Previous studies on plants revealed that both physiological and biological parameters are negatively affected by O 3 exposure Iriti and Faoro 2008). O 3 -treated plants usually present severe biomass reduction and foliar injury (Iglesias et al 2006;Black et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Ozone exposure differentially affects oxidative stress parameters in distinctPhaseolus vulgarisL. varieties

Caregnato¹,

Clebsch

Rocha³

et al. 2010

Journal of Plant Interactions

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Different oxidative stress parameters of four Brazilian varieties of Phaseolus vulgaris exposed to toxic O 3 concentrations were compared with the well-established bioindicator variety Pinto 111. Analysis of catalase (CAT) activity, lipoperoxidation and non-enzymatic antioxidant levels demonstrated that the varieties presented different susceptibilities to O 3 toxicity. Results indicated that Fepagro 26 and Guapo Brilhante increased the levels of lipoperoxidation in response to O 3 while catalase activity was not changed. On the opposite Iraı, Macotac¸o and Pinto 111 presented different pattern of lipoperoxidation and CAT activation indicating a relationship between CAT activation and resistance to lipoperoxidation. Analysis of the total non-enzymatic antioxidant defense levels demonstrated that although O 3 exposure decreased the non-enzymatic antioxidant defense in Iraı, lipoperoxidation levels was not enhanced in this variety as observed with Fepagro 26. Our results suggest that analysis of the oxidative stress parameters of varieties with known variations of susceptibility to O 3 may provide more precise protocols for early detection of O 3 toxicity.

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Oxidative Stress, the Paradigm of Ozone Toxicity in Plants and Animals

Cited by 126 publications

References 158 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

Seasonal characterization of antioxidant responses in plants of Ipomoea nil cv. Scarlet O'Hara

Ozone exposure differentially affects oxidative stress parameters in distinctPhaseolus vulgarisL. varieties

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