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Nanogram amounts of salicylic acid produced by the rhizobacterium Pseudomonas aeruginosa 7NSK2 activate the systemic acquired resistance pathway in bean

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Abstract
Root colonization by specific nonpathogenic bacteria can induce a systemic resistance in plants to pathogen infections. In bean, this kind of systemic resistance can be induced by the rhizobacterium Pseudomonas aeruginosa 7NSK2 and depends on the production of salicylic acid by this strain. In a model with plants grown in perlite we demonstrated that Pseudomonas aeruginosa 7NSK2-induced resistance is equivalent to the inclusion of 1 nM salicylic acid in the nutrient solution and used the latter treatment to analyze the molecular basis of this phenomenon. Hydroponic feeding of 1 nM salicylic acid solutions induced phenylalanine ammonia-lyase activity in roots and increased free salicylic acid levels in leaves. Because pathogen-induced systemic acquired resistance involves similar changes it was concluded that 7NSK2-induced resistance is mediated by the systemic acquired resistance pathway. This conclusion was validated by analysis of phenylalanine ammonia-lyase activity in roots and of salicylic acid levels in leaves of soil-grown plants treated with Pseudomonas aeruginosa. The induction of systemic acquired resistance by nanogram amounts of salicylic acid is discussed with respect to long-distance signaling in systemic acquired resistance.
Keywords
induced systemic resistance, Botrytis cinerea, TOBACCO MOSAIC-VIRUS, TRANSLOCATED SIGNAL, GENE-EXPRESSION, NECROSIS VIRUS, CUCUMBER, INFECTION, INDUCTION, ACCUMULATION, FLUORESCENS, INCREASE

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Chicago
De Meyer, Geert, Kristof Capiau, Kris Audenaert, Antony Buchala, Jean-Pierre Métraux, and Monica Höfte. 1999. “Nanogram Amounts of Salicylic Acid Produced by the Rhizobacterium Pseudomonas Aeruginosa 7NSK2 Activate the Systemic Acquired Resistance Pathway in Bean.” Molecular Plant-microbe Interactions 12 (5): 450–458.
APA
De Meyer, Geert, Capiau, K., Audenaert, K., Buchala, A., Métraux, J.-P., & Höfte, M. (1999). Nanogram amounts of salicylic acid produced by the rhizobacterium Pseudomonas aeruginosa 7NSK2 activate the systemic acquired resistance pathway in bean. MOLECULAR PLANT-MICROBE INTERACTIONS, 12(5), 450–458.
Vancouver
1.
De Meyer G, Capiau K, Audenaert K, Buchala A, Métraux J-P, Höfte M. Nanogram amounts of salicylic acid produced by the rhizobacterium Pseudomonas aeruginosa 7NSK2 activate the systemic acquired resistance pathway in bean. MOLECULAR PLANT-MICROBE INTERACTIONS. 1999;12(5):450–8.
MLA
De Meyer, Geert, Kristof Capiau, Kris Audenaert, et al. “Nanogram Amounts of Salicylic Acid Produced by the Rhizobacterium Pseudomonas Aeruginosa 7NSK2 Activate the Systemic Acquired Resistance Pathway in Bean.” MOLECULAR PLANT-MICROBE INTERACTIONS 12.5 (1999): 450–458. Print.
@article{119928,
  abstract     = {Root colonization by specific nonpathogenic bacteria can induce a systemic resistance in plants to pathogen infections. In bean, this kind of systemic resistance can be induced by the rhizobacterium Pseudomonas aeruginosa 7NSK2 and depends on the production of salicylic acid by this strain. In a model with plants grown in perlite we demonstrated that Pseudomonas aeruginosa 7NSK2-induced resistance is equivalent to the inclusion of 1 nM salicylic acid in the nutrient solution and used the latter treatment to analyze the molecular basis of this phenomenon. Hydroponic feeding of 1 nM salicylic acid solutions induced phenylalanine ammonia-lyase activity in roots and increased free salicylic acid levels in leaves. Because pathogen-induced systemic acquired resistance involves similar changes it was concluded that 7NSK2-induced resistance is mediated by the systemic acquired resistance pathway. This conclusion was validated by analysis of phenylalanine ammonia-lyase activity in roots and of salicylic acid levels in leaves of soil-grown plants treated with Pseudomonas aeruginosa. The induction of systemic acquired resistance by nanogram amounts of salicylic acid is discussed with respect to long-distance signaling in systemic acquired resistance.},
  author       = {De Meyer, Geert and Capiau, Kristof and Audenaert, Kris and Buchala, Antony and M{\'e}traux, Jean-Pierre and H{\"o}fte, Monica},
  issn         = {0894-0282},
  journal      = {MOLECULAR PLANT-MICROBE INTERACTIONS},
  keyword      = {induced systemic resistance,Botrytis cinerea,TOBACCO MOSAIC-VIRUS,TRANSLOCATED SIGNAL,GENE-EXPRESSION,NECROSIS VIRUS,CUCUMBER,INFECTION,INDUCTION,ACCUMULATION,FLUORESCENS,INCREASE},
  language     = {eng},
  number       = {5},
  pages        = {450--458},
  title        = {Nanogram amounts of salicylic acid produced by the rhizobacterium Pseudomonas aeruginosa 7NSK2 activate the systemic acquired resistance pathway in bean},
  url          = {http://dx.doi.org/10.1094/MPMI.1999.12.5.450},
  volume       = {12},
  year         = {1999},
}

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