Technical Note: Particulate reactive oxygen species concentrations and their association with environmental conditions in an urban, subtropical climate

Abstract. Reactions between hydrocarbons and ozone or hydroxyl radicals lead to the formation of oxidized species, including reactive oxygen species (ROS), and secondary organic aerosol (SOA) in the troposphere. ROS can be carried deep into the lungs by small aerodynamic particles where they can cause oxidative stress and cell damage. While environmental studies have focused on ROS in the gas-phase and rainwater, it is also important to determine concentrations of ROS on respirable particles. Samples of PM2.5 collected over 3 h at midday on 40 days during November 2011 and September 2012 show that the particulate ROS concentration in Austin, Texas ranged from a minimum value of 0.02 nmol H2O2 (m3 air)−1 in December to 3.81 nmol H2O2 (m3 air)−1 in September. Results from correlation tests and linear regression analysis on particulate ROS concentrations and environmental conditions (which included ozone and PM2.5 concentrations, temperature, relative humidity, precipitation and solar radiation) indicate that ambient particulate ROS is significantly influenced by the ambient ozone concentration, temperature and incident solar radiation. Particulate ROS concentrations measured in this study were in the range reported by other studies in the US, Taiwan and Singapore. This study is one of the first to assess seasonal variations in particulate ROS concentrations and helps explain the influence of environmental conditions on particulate ROS concentrations.

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Technical Note: Particulate reactive oxygen species concentrations and their association with environmental conditions in an urban, subtropical climate

Atmospheric Chemistry and Physics ◽

10.5194/acp-14-6777-2014 ◽

2014 ◽

Vol 14 (13) ◽

pp. 6777-6784 ◽

Cited By ~ 5

Author(s):

S. S. Khurshid ◽

J. A. Siegel ◽

K. A. Kinney

Keyword(s):

Reactive Oxygen Species ◽

Solar Radiation ◽

Environmental Conditions ◽

Cell Damage ◽

Linear Regression Analysis ◽

Reactive Oxygen ◽

Technical Note ◽

Subtropical Climate ◽

Oxygen Species ◽

The Us

Abstract. Reactions between hydrocarbons and ozone or hydroxyl radicals lead to the formation of oxidized species, including reactive oxygen species (ROS), and secondary organic aerosol (SOA) in the troposphere. ROS can be carried deep into the lungs by small aerodynamic particles where they can cause oxidative stress and cell damage. While environmental studies have focused on ROS in the gas phase and rainwater, it is also important to determine concentrations of ROS on respirable particles. Samples of PM2.5 collected over 3 h at midday on 40 days during November 2011 and September 2012 show that the particulate ROS concentration in Austin, Texas, ranged from a minimum value of 0.02 nmoles H2O2 m−3 air in December to 3.81 nmoles H2O2 m−3 air in September. Results from correlation tests and linear regression analysis on particulate ROS concentrations and environmental conditions (which included ozone and PM2.5 concentrations, temperature, relative humidity, precipitation and solar radiation) indicate that ambient particulate ROS is significantly influenced by the ambient ozone concentration, temperature and incident solar radiation. Particulate ROS concentrations measured in this study were in the range reported by other studies in the US, Taiwan and Singapore. This study is one of the first to assess seasonal variations in particulate ROS concentrations and helps explain the influence of environmental conditions on particulate ROS concentrations.

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Radiation-induced red cell damage: role of reactive oxygen species

Transfusion ◽

10.1046/j.1537-2995.1997.37297203518.x ◽

1997 ◽

Vol 37 (2) ◽

pp. 160-165 ◽

Cited By ~ 39

Author(s):

AJ Anand ◽

WH Dzik ◽

A Imam ◽

SM Sadrzadeh

Keyword(s):

Reactive Oxygen Species ◽

Cell Damage ◽

Reactive Oxygen ◽

Red Cell ◽

Oxygen Species ◽

Radiation Induced

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In Vitro Bacterial Cytotoxicity of CNTs: Reactive Oxygen Species Mediate Cell Damage Edges over Direct Physical Puncturing

Langmuir ◽

10.1021/la403332b ◽

2013 ◽

Vol 30 (2) ◽

pp. 592-601 ◽

Cited By ~ 41

Author(s):

Krishnamoorthy Rajavel ◽

Rajkumar Gomathi ◽

Sellamuthu Manian ◽

Ramasamy Thangavelu Rajendra Kumar

Keyword(s):

Reactive Oxygen Species ◽

Cell Damage ◽

Reactive Oxygen ◽

Oxygen Species ◽

Mediate Cell

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Preventing UV induced cell damage by scavenging reactive oxygen species with enzyme-mimic Au–Pt nanocomposites

Talanta ◽

10.1016/j.talanta.2013.12.020 ◽

2014 ◽

Vol 120 ◽

pp. 262-267 ◽

Cited By ~ 10

Author(s):

Bin Xiong ◽

Ruili Xu ◽

Rui Zhou ◽

Yan He ◽

Edward S. Yeung

Keyword(s):

Reactive Oxygen Species ◽

Cell Damage ◽

Reactive Oxygen ◽

Enzyme Mimic ◽

Oxygen Species

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Mitochondrial dysfunction related to cell damage induced by 3-hydroxykynurenine and 3-hydroxyanthranilic acid: Non-dependent-effect of early reactive oxygen species production

NeuroToxicology ◽

10.1016/j.neuro.2015.08.003 ◽

2015 ◽

Vol 50 ◽

pp. 81-91 ◽

Cited By ~ 22

Author(s):

J. Reyes-Ocampo ◽

D. Ramírez-Ortega ◽

G.I. Vázquez Cervantes ◽

B. Pineda ◽

Pavel Montes de Oca Balderas ◽

...

Keyword(s):

Reactive Oxygen Species ◽

Mitochondrial Dysfunction ◽

Reactive Oxygen Species Production ◽

Cell Damage ◽

Reactive Oxygen ◽

Oxygen Species ◽

Dependent Effect ◽

Hydroxyanthranilic Acid ◽

Species Production

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Signaling Toward Reactive Oxygen Species-Scavenging Enzymes in Plants

Frontiers in Plant Science ◽

10.3389/fpls.2020.618835 ◽

2021 ◽

Vol 11 ◽

Cited By ~ 1

Author(s):

Petr Dvořák ◽

Yuliya Krasylenko ◽

Adam Zeiner ◽

Jozef Šamaj ◽

Tomáš Takáč

Keyword(s):

Reactive Oxygen Species ◽

Antioxidant Enzymes ◽

Environmental Conditions ◽

Antioxidant Defense ◽

Current Knowledge ◽

Reactive Oxygen ◽

Oxygen Species ◽

Negative Consequences ◽

Ros Scavenging ◽

Enzymatic Antioxidant

Reactive oxygen species (ROS) are signaling molecules essential for plant responses to abiotic and biotic stimuli as well as for multiple developmental processes. They are produced as byproducts of aerobic metabolism and are affected by adverse environmental conditions. The ROS content is controlled on the side of their production but also by scavenging machinery. Antioxidant enzymes represent a major ROS-scavenging force and are crucial for stress tolerance in plants. Enzymatic antioxidant defense occurs as a series of redox reactions for ROS elimination. Therefore, the deregulation of the antioxidant machinery may lead to the overaccumulation of ROS in plants, with negative consequences both in terms of plant development and resistance to environmental challenges. The transcriptional activation of antioxidant enzymes accompanies the long-term exposure of plants to unfavorable environmental conditions. Fast ROS production requires the immediate mobilization of the antioxidant defense system, which may occur via retrograde signaling, redox-based modifications, and the phosphorylation of ROS detoxifying enzymes. This review aimed to summarize the current knowledge on signaling processes regulating the enzymatic antioxidant capacity of plants.

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