Journal ArticleDOI
The oxidative burst in plant disease resistance
Christopher J. Lamb,Richard A. Dixon +1 more
- Vol. 48, Iss: 1, pp 251-275
TLDR
Emerging data indicate that the oxidative burst reflects activation of a membrane-bound NADPH oxidase closely resembling that operating in activated neutrophils, which underlies the expression of disease-resistance mechanisms.Abstract:
Rapid generation of superoxide and accumulation of H2O2 is a characteristic early feature of the hypersensitive response following perception of pathogen avirulence signals. Emerging data indicate that the oxidative burst reflects activation of a membrane-bound NADPH oxidase closely resembling that operating in activated neutrophils. The oxidants are not only direct protective agents, but H2O2 also functions as a substrate for oxidative cross-linking in the cell wall, as a threshold trigger for hypersensitive cell death, and as a diffusible signal for induction of cellular protectant genes in surrounding cells. Activation of the oxidative burst is a central component of a highly amplified and integrated signal system, also involving salicylic acid and perturbations of cytosolic Ca2+, which underlies the expression of disease-resistance mechanisms.read more
Citations
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Free Radicals in the Physiological Control of Cell Function
TL;DR: There is growing evidence that aging involves, in addition, progressive changes in free radical-mediated regulatory processes that result in altered gene expression.
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Reactive oxygen gene network of plants
TL;DR: In Arabidopsis, a network of at least 152 genes is involved in managing the level of ROS, and this network is highly dynamic and redundant, and encodes ROS-scavenging and ROS-producing proteins.
Journal ArticleDOI
Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review
TL;DR: Factors which possibly affect the effectiveness of antioxidant protection under oxygen deprivation as well as under other environmental stresses are presented.
Journal ArticleDOI
Plant drought stress: effects, mechanisms and management
Muhammad Farooq,Muhammad Farooq,Abdul Wahid,Nobuya Kobayashi,Daisuke Fujita,Shahzad M. A. Basra +5 more
TL;DR: The effects of drought stress on the growth, phenology, water and nutrient relations, photosynthesis, assimilate partitioning, and respiration in plants, and the mechanism of drought resistance in plants on a morphological, physiological and molecular basis are reviewed.
Journal ArticleDOI
Cell Signaling during Cold, Drought, and Salt Stress
TL;DR: Low temperature, drought, and high salinity are common stress conditions that adversely affect plant growth and crop production and understand the cellular and molecular responses of plants to environmental stress.
References
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Journal ArticleDOI
H2O2 from the oxidative burst orchestrates the plant hypersensitive disease resistance response
TL;DR: It is reported here that H2O2 from this oxidative burst not only drives the cross-linking of cell wall structural proteins, but also functions as a local trigger of programmed death in challenged cells and as a diffusible signal for the induction in adjacent cells of genes encoding cellular protectants.
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