Possible Sources of Reactive Oxygen during the Oxidative Burst in Plants

Murphy, Terrence M.; Asard, Han; Cross, Andrew R.

doi:10.1007/978-94-017-2695-5_9

Cited by 33 publications

(37 citation statements)

References 96 publications

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“…Plant NADPH oxidases play a predominant role in the early ROS generation, which represents one of the earliest defence responses to infection [48]. The positive effect of StRbohA in the transgenic plants in the present study raises very interesting questions about the possibility of facilitating pathogen exposure to the plant's sentinel defences, which rears further questions about the mechanisms of such recognition and the potential to exploit such knowledge towards induced HR, cell death, and further resistance.…”

Section: Overexpression Of Strboha In Arabidopsis Induced Ros-mediatementioning

confidence: 92%

Overexpression of StRbohA in Arabidopsis thaliana enhances defence responses against Verticillium dahliae

Yao

Islam

Badawi

et al. 2015

Physiological and Molecular Plant Pathology

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Section: Overexpression Of Strboha In Arabidopsis Induced Ros-mediatementioning

confidence: 92%

Overexpression of StRbohA in Arabidopsis thaliana enhances defence responses against Verticillium dahliae

Yao

Islam

Badawi

et al. 2015

Physiological and Molecular Plant Pathology

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“…One of the earliest defence responses is the oxidative burst, a rapid and transient production of high levels of ROS (Murphy et al 1998). An important feature of this mechanism is its exocellular nature -ROS are released into the apoplast, directly affecting the invading pathogen, serving as diffusible messengers or participating in oxidative cross-linking of wall components and induction of systemic acquired resistance (Wojtaszek 1997).…”

Section: Oxidative Burst and Its Consequences In The Apoplastmentioning

confidence: 99%

Pathogenic infection and the oxidative defences in plant apoplast

et al. 2001

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The structural and functional continuum of the plant apoplast is the first site of contact with a pathogen and plays a crucial role in initiation and coordination of many defence responses. In this paper, we present an overview of the involvement of the plant apoplast in plant-pathogen interactions. The process of infection of French bean (Phaseolus vulgaris L.) plants by Colletotrichum lindemuthianum is analysed. The ultrastructural features of plant defence responses to fungal infection are then compared with those observed in plants or cell suspensions treated with various elicitors. Changes in cell walls and in whole plant cells responding to infection seem to be highly similar in all systems used. Model systems of French bean and white lupin (Lupinus albus L.) are then utilised to provide some biochemical characteristics of oxidative reactions in the apoplast evoked by elicitor treatment. The species specificity of various mechanisms generating reactive oxygen species is discussed, and some details of pH-dependent H2O2-generating activity of peroxidases are demonstrated. As its exocellular nature is an important feature of the oxidative burst, the major consequence of this event, i.e., the oxidative cross-linking of wall components during the papilla formation and strengthening of the walls, is analysed. Finally, the possible involvement of other wall-associated and developmentally regulated H2O2-generating mechanisms, like amine and oxalate oxidases, in plant defence is demonstrated. It is concluded that under stress conditions, such apoplastic mechanisms might be employed to increase plants' chances of survival.

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“…The oxidative burst during which the reactive oxygen species, O 2¯a nd H 2 O 2 , are produced is a common response of plants to several forms of biotic and abiotic stresses (Murphy et al 1998). In many respect, the oxidative burst in plants is similar to the respiratory burst in neutrophils where the enzyme complex responsible for the production of reactive oxygen species -the respiratory burst oxidase (RBO) -contains two integral membrane polypeptides and four cytoplasmic regulatory polypeptides (Segal et al 1998 and references therein).…”

Section: Nadph Oxidasesmentioning

confidence: 99%

“…The results point to the absence of an RBO-like NADPH oxidase in higher plant PM. In addition, evidence is accumulating that mechanisms other than a neutrophil-type NADPH oxidase are active in plants during defence against pathogens (Murphy, Asard & Cross 1998;Lüthje et al 2000).…”

Section: Nadph Oxidasesmentioning

confidence: 99%