Oxygen activation at the plasma membrane: relation between superoxide and hydroxyl radical production by isolated membranes

Heyno, Eiri; Mary, Véronique; Schöpfer, Peter; Krieger‐Liszkay, Anja

doi:10.1007/s00425-011-1379-y

Cited by 104 publications

(70 citation statements)

References 49 publications

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“…Production of ROS was studied using EPR spin-trapping techniques and specific dyes in isolated plasma membranes from the growing and the nongrowing zones of hypocotyls and roots of etiolated soybean seedlings as well as coleoptiles and roots of etiolated maize seedlings [5]. NAD(P)H mediated the production of O 2 •− in all plasma membrane samples.…”

Section: Plasma Membranesmentioning

confidence: 99%

“…In plants, ROS are always formed by the inevitable leakage of electrons onto O 2 from the electron transport activities of chloroplasts, mitochondria, and plasma membranes or as a byproduct of various metabolic pathways localized in different cellular compartments [1][2][3][4][5]. Environmental stresses such as drought, salinity, chilling, metal toxicity, and UV-B radiation as well as pathogens attack lead to enhanced generation of ROS in plants due to disruption of cellular homeostasis [6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

et al. 2012

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Reactive oxygen species (ROS) are produced as a normal product of plant cellular metabolism. Various environmental stresses lead to excessive production of ROS causing progressive oxidative damage and ultimately cell death. Despite their destructive activity, they are well-described second messengers in a variety of cellular processes, including conferment of tolerance to various environmental stresses. Whether ROS would serve as signaling molecules or could cause oxidative damage to the tissues depends on the delicate equilibrium between ROS production, and their scavenging. Efficient scavenging of ROS produced during various environmental stresses requires the action of several nonenzymatic as well as enzymatic antioxidants present in the tissues. In this paper, we describe the generation, sites of production and role of ROS as messenger molecules as well as inducers of oxidative damage. Further, the antioxidative defense mechanisms operating in the cells for scavenging of ROS overproduced under various stressful conditions of the environment have been discussed in detail.

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Section: Plasma Membranesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

et al. 2012

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“…One of the early changes in plants metabolism and physiology during abiotic stress such as salinity is, production of ROS; 2 . This ROS production is attributed to metabolic utilization of reducing power and imbalance in electron transport [25]. One of the earliest stress signaling components appears to be H 2 O 2 , a stable ROS intermediate, produced by progressive reduction in PS-II and β-oxidation of lipids during abiotic stress [26].…”

Section: Discussionmentioning

confidence: 99%

Effect of Salinity Stress on Antioxidant Defense System of Niger (<i>Guizotia abyssinica</i> Cass.)

Naik¹,

Devaraj²

2016

AJPS

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Salinity is one of the principal abiotic stresses that affect plant productivity by inducing osmotic stress, which in turn, causes oxidative stress. Plants respond to this oxidative stress by adjusting levels of antioxidants and associated components. 10-day old seedlings of Niger were evaluated for abiotic stress response in terms of antioxidants and antioxidant enzymes over 72 h in presence of up to 500 mM NaCl in combination with CaCl 2 . Stress markers: H 2 O 2 , lipid peroxidation, antioxidants; ASC and GSH and antioxidant enzymes such as POX, APX and GR were significantly elevated, while CAT was reduced. The response was concentration and time-dependent up to 300 mM NaCl and fluctuated beyond. Metabolic enzymes β-amylase and acid phosphatase exhibited moderate increase relative to controls. The parameters indicated tolerance of the plants to salinity up to 300 mM over 48 h.

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“…00,No. 0,201x chloroplasts or through different metabolic activities like beta-oxidation that leads to ROS production (Table 2; Blokhina and Fagerstedt, 2010;Heyno et al, 2011;Gilroy et al, 2016;Kerchev et al, 2016;Kao, 2017).…”

Section: Ros Production Under Drought Stressmentioning

confidence: 99%

Role of Reactive Oxygen Species and Contribution of New Players in Defense Mechanism under Drought Stress in Rice

Qureshi¹,

Munir²,

Rasul³

et al. 2018

IJAB

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Rice (Oryza sativa) falls among the staple food crops in different parts of the globe. In current scenario of climate change, drought stress leads to significant decrease in crop production. It has negative effect on rice growth and development by affecting cellular, physiological and molecular processes. Photo-respiration increases under drought stress leads to overproduction of reactive oxygen species (ROS) in different organelles of the cell like chloroplasts, mitochondria and peroxisomes etc., which induce severe oxidative stress in rice. Over production of ROS can cause damage to proteins, lipids and DNA leading to lipid peroxidation, proteins oxidation, mutation, DNA damage that can lead to cell death. Under drought stress, ROS turn over in various organelles overload antioxidant quenching mechanism leading to oxidative damage. Oxidative stress can be overcome by the scavenging system, which consists of enzymatic and non-enzymatic antioxidants. Moreover, ROS also acts as signaling molecule and triggers defense mechanism through specific signal transduction network under stress. Under stress condition, activation of molecular cascades is initiated through the perception of stress that leads to the activation of signal transduction pathway including expression of transcription factors and stress related genes. Understanding of this regulatory mechanism of plant development and growth in drought-ROS stress can be promising in the development of improved transgenic rice under this stress. This review will provide an overview of ROS synthesis and signaling pathway under drought condition in rice.

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Oxygen activation at the plasma membrane: relation between superoxide and hydroxyl radical production by isolated membranes

Cited by 104 publications

References 49 publications

Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

Effect of Salinity Stress on Antioxidant Defense System of Niger (<i>Guizotia abyssinica</i> Cass.)

Role of Reactive Oxygen Species and Contribution of New Players in Defense Mechanism under Drought Stress in Rice

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Oxygen activation at the plasma membrane: relation between superoxide and hydroxyl radical production by isolated membranes

Cited by 104 publications

References 49 publications

Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

Effect of Salinity Stress on Antioxidant Defense System of Niger (&lt;i&gt;Guizotia abyssinica&lt;/i&gt; Cass.)

Role of Reactive Oxygen Species and Contribution of New Players in Defense Mechanism under Drought Stress in Rice

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Effect of Salinity Stress on Antioxidant Defense System of Niger (<i>Guizotia abyssinica</i> Cass.)