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Changes in hydrogen peroxide homeostasis trigger an active cell death process in tobacco

(2003) PLANT JOURNAL. 33(4). p.621-632
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Abstract
In transgenic tobacco plants with reduced catalase activity, high levels of hydrogen peroxide (H-2 O-2 ) can accumulate under photorespiratory conditions. Such a perturbation in H-2 O-2 homeostasis induced cell death in clusters of palisade parenchyma cells, primarily along the veins. Ultrastructural alterations, such as chromatin condensation and disruption of mitochondrial integrity, took place before cell death. Furthermore, enhanced transcript levels of mitochondrial defense genes accompanied these mitochondrial changes. Pharmacological data indicated that the initiation and execution of cell death require de novo protein synthesis and that the signal transduction pathway leading to cell death involved changes in ion homeostasis, (de)phosphorylation events and an oxidative burst, as observed during hypersensitive responses. This oxidase-dependent oxidative burst is essential for cell death, but it is not required for the accumulation of defense proteins, suggesting a more prominent role for the oxidative burst in abiotic stress-induced cell death.
Keywords
PROTEIN-KINASE, NICOTIANA-PLUMBAGINIFOLIA, SALICYLIC-ACID, GENE-EXPRESSION, SIGNAL-TRANSDUCTION, TRANSGENIC TOBACCO, OXIDATIVE BURST, PLANT DEFENSE RESPONSE, MANGANESE SUPEROXIDE-DISMUTASE, DISEASE RESISTANCE RESPONSE, tobacco, signal transduction, oxidative burst, hydrogen peroxide, abiotic stress, cell death

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Citation

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Chicago
Dat, James F, Riikka Pellinen, Tom Beeckman, Brigitte Van De Cotte, Christian Langebartels, Jaakko Kangasjärvi, Dirk Inzé, and Frank Van Breusegem. 2003. “Changes in Hydrogen Peroxide Homeostasis Trigger an Active Cell Death Process in Tobacco.” Plant Journal 33 (4): 621–632.
APA
Dat, J. F., Pellinen, R., Beeckman, T., Van De Cotte, B., Langebartels, C., Kangasjärvi, J., Inzé, D., et al. (2003). Changes in hydrogen peroxide homeostasis trigger an active cell death process in tobacco. PLANT JOURNAL, 33(4), 621–632.
Vancouver
1.
Dat JF, Pellinen R, Beeckman T, Van De Cotte B, Langebartels C, Kangasjärvi J, et al. Changes in hydrogen peroxide homeostasis trigger an active cell death process in tobacco. PLANT JOURNAL. 2003;33(4):621–32.
MLA
Dat, James F, Riikka Pellinen, Tom Beeckman, et al. “Changes in Hydrogen Peroxide Homeostasis Trigger an Active Cell Death Process in Tobacco.” PLANT JOURNAL 33.4 (2003): 621–632. Print.
@article{211979,
  abstract     = {In transgenic tobacco plants with reduced catalase activity, high levels of hydrogen peroxide (H-2 O-2 ) can accumulate under photorespiratory conditions. Such a perturbation in H-2 O-2 homeostasis induced cell death in clusters of palisade parenchyma cells, primarily along the veins. Ultrastructural alterations, such as chromatin condensation and disruption of mitochondrial integrity, took place before cell death. Furthermore, enhanced transcript levels of mitochondrial defense genes accompanied these mitochondrial changes. Pharmacological data indicated that the initiation and execution of cell death require de novo protein synthesis and that the signal transduction pathway leading to cell death involved changes in ion homeostasis, (de)phosphorylation events and an oxidative burst, as observed during hypersensitive responses. This oxidase-dependent oxidative burst is essential for cell death, but it is not required for the accumulation of defense proteins, suggesting a more prominent role for the oxidative burst in abiotic stress-induced cell death.},
  author       = {Dat, James F and Pellinen, Riikka and Beeckman, Tom and Van De Cotte, Brigitte and Langebartels, Christian and Kangasj{\"a}rvi, Jaakko and Inz{\'e}, Dirk and Van Breusegem, Frank},
  issn         = {0960-7412},
  journal      = {PLANT JOURNAL},
  keyword      = {PROTEIN-KINASE,NICOTIANA-PLUMBAGINIFOLIA,SALICYLIC-ACID,GENE-EXPRESSION,SIGNAL-TRANSDUCTION,TRANSGENIC TOBACCO,OXIDATIVE BURST,PLANT DEFENSE RESPONSE,MANGANESE SUPEROXIDE-DISMUTASE,DISEASE RESISTANCE RESPONSE,tobacco,signal transduction,oxidative burst,hydrogen peroxide,abiotic stress,cell death},
  language     = {eng},
  number       = {4},
  pages        = {621--632},
  title        = {Changes in hydrogen peroxide homeostasis trigger an active cell death process in tobacco},
  url          = {http://dx.doi.org/10.1046/j.1365-313X.2003.01655.x},
  volume       = {33},
  year         = {2003},
}

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