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Science 17 December 1993:
Vol. 262. no. 5141, pp. 1883 - 1886
DOI: 10.1126/science.8266079

Articles

Science, Vol 262, Issue 5141, 1883-1886
Copyright © 1993 by American Association for the Advancement of Science


articles

Active oxygen species in the induction of plant systemic acquired resistance by salicylic acid

Z Chen, H Silva, and DF Klessig

Waksman Institute, Rutgers, State University of New Jersey, Piscataway 08855.

A complementary DNA encoding a salicylic acid (SA)-binding protein has been cloned. Its properties suggest involvement in SA-mediated induction of systemic acquired resistance (SAR) in plants. The sequence of the protein is similar to that of catalases and the protein exhibits catalase activity. Salicylic acid specifically inhibited the catalase activity in vitro and induced an increase in H2O2 concentrations in vivo. H2O2 or compounds, such as SA, that inhibit catalases or enhance the generation of H2O2, induced expression of defense-related genes associated with SAR. Thus, the action of SA in SAR is likely mediated by elevated amounts of H2O2.


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   Abstract »    Full Text »
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   Abstract »    Full Text »
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D. B. Jennings, M. Ehrenshaft, D. M. Pharr, and J. D. Williamson (1998)
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   Abstract »    Full Text »    PDF »
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L. Tamagnone, A. Merida, N. Stacey, K. Plaskitt, A. Parr, C.-F. Chang, D. Lynn, J. M. Dow, K. Roberts, and C. Martin (1998)
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   Abstract »    Full Text »    PDF »
PIOX, a New Pathogen-Induced Oxygenase with Homology to Animal Cyclooxygenase.
A. Sanz, J. I. Moreno, and C. Castresana (1998)
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   Abstract »    Full Text »
Defense gene induction in tobacco by nitric oxide, cyclic GMP, and cyclic ADP-ribose.
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   Abstract »    Full Text »    PDF »
Defense activation and enhanced pathogen tolerance induced by H2O2 in transgenic tobacco.
S. Chamnongpol, H. Willekens, W. Moeder, C. Langebartels, H. Sandermann Jr., M. Van Montagu, D. Inze, and W. Van Camp (1998)
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   Abstract »    Full Text »    PDF »
Parallel Changes in H2O2 and Catalase during Thermotolerance Induced by Salicylic Acid or Heat Acclimation in Mustard Seedlings.
J. F. Dat, H. Lopez-Delgado, C. H. Foyer, and I. M. Scott (1998)
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   Abstract »    Full Text »
Post-Transcriptional Suppression of Cytosolic Ascorbate Peroxidase Expression during Pathogen-Induced Programmed Cell Death in Tobacco.
R. Mittler, X. Feng, and M. Cohen (1998)
PLANT CELL 10, 461-474
   Abstract »    Full Text »    PDF »
Oxidative Burst and Hypoosmotic Stress in Tobacco Cell Suspensions.
A.-C. Cazale, M.-A. Rouet-Mayer, H. Barbier-Brygoo, Y. Mathieu, and C. Lauriere (1998)
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   Abstract »    Full Text »    PDF »
Salicylic Acid Is a Reducing Substrate and Not an Effective Inhibitor of Ascorbate Peroxidase.
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   Abstract »    Full Text »    PDF »
Signal perception and transduction in plant defense responses..
Y Yang, J Shah, and D F Klessig (1997)
Genes & Dev. 11, 1621-1639
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Isolation and characterization of a tobacco mosaic virus-inducible myb oncogene homolog from tobacco.
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   Abstract »    Full Text »    PDF »
Salicylic Acid Is a Modulator of Tobacco and Mammalian Catalases.
J. Durner and D. F. Klessig (1996)
J. Biol. Chem. 271, 28492-28501
   Abstract »    Full Text »    PDF »
Salicylate Triggers Heat Shock Factor Differently than Heat.
D. A. Jurivich, C. Pachetti, L. Qiu, and J. F. Welk (1995)
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   Abstract »    Full Text »    PDF »
Requirement for Generation of H(2)O(2) for Platelet-Derived Growth Factor Signal Tran sduction.
M. Sundaresan, Z.-X. Yu, V. J. Ferrans, K. Irani, and T. Finkel (1995)
Science 270, 296-299
   Abstract »    PDF »
Prevention of drug access to bacterial targets: permeability barriers and active efflux.
H Nikaido (1994)
Science 264, 382-388
   Abstract »    PDF »
Surprising Signals in Plant Cells.
A. M. Jones (1994)
Science 263, 183-184
   PDF »
The Arabidopsis-accelerated cell death gene ACD2 encodes red chlorophyll catabolite reductase and suppresses the spread of disease symptoms.
J. M. Mach, A. R. Castillo, R. Hoogstraten, and J. T. Greenberg (2001)
PNAS 98, 771-776
   Abstract »    Full Text »    PDF »



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