Advanced search
1 file | 411.36 KB

Induction of systemic resistance in tomato by N-acyl-L-homoserine lactone-producing rhizosphere bacteria

(2006) PLANT CELL AND ENVIRONMENT. 29(5). p.909-918
Author
Organization
Abstract
N-acyl-L-homoserine lactone (AHL) signal molecules are utilized by Gram-negative bacteria to monitor their population density (quorum sensing) and to regulate gene expression in a density-dependent manner. We show that Serratia liquefaciens MG1 and Pseudomonas putida IsoF colonize tomato roots, produce AHL in the rhizosphere and increase systemic resistance of tomato plants against the fungal leaf pathogen, Alternaria alternata. The AHL-negative mutant S. liquefaciens MG44 was less effective in reducing symptoms and A. alternata growth as compared to the wild type. Salicylic acid (SA) levels were increased in leaves when AHL-producing bacteria colonized the rhizosphere. No effects were observed when isogenic AHL-negative mutant derivatives were used in these experiments. Furthermore, macroarray and Northern blot analysis revealed that AHL molecules systemically induce SA- and ethylene-dependent defence genes (i.e. PR1a, 26 kDa acidic and 30 kDa basic chitinase). Together, these data support the view that AHL molecules play a role in the biocontrol activity of rhizobacteria through the induction of systemic resistance to pathogens.
Keywords
Lycopersicon esculentum Mill., Alternaria alternata, Serratia liquefaciens, quorum sensing, salicylic acid, SERRATIA-LIQUEFACIENS MG1, PSEUDOMONAS-AERUGINOSA 7NSK2, SALICYLIC-ACID ACCUMULATION, MEDIATED GENE-REGULATION, DISEASE RESISTANCE, BOTRYTIS-CINEREA, HOST PLANTS, EXPRESSION, RHIZOBACTERIA, ARABIDOPSIS

Downloads

    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 411.36 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Schuhegger, Regina, Alexandra Ihring, Stephan Gantner, Günther Bahnweg, Claudia Knappe, Gerd Vogg, Peter Hutzler, et al. 2006. “Induction of Systemic Resistance in Tomato by N-acyl-L-homoserine Lactone-producing Rhizosphere Bacteria.” Plant Cell and Environment 29 (5): 909–918.
APA
Schuhegger, R., Ihring, A., Gantner, S., Bahnweg, G., Knappe, C., Vogg, G., Hutzler, P., et al. (2006). Induction of systemic resistance in tomato by N-acyl-L-homoserine lactone-producing rhizosphere bacteria. PLANT CELL AND ENVIRONMENT, 29(5), 909–918.
Vancouver
1.
Schuhegger R, Ihring A, Gantner S, Bahnweg G, Knappe C, Vogg G, et al. Induction of systemic resistance in tomato by N-acyl-L-homoserine lactone-producing rhizosphere bacteria. PLANT CELL AND ENVIRONMENT. 2006;29(5):909–18.
MLA
Schuhegger, Regina, Alexandra Ihring, Stephan Gantner, et al. “Induction of Systemic Resistance in Tomato by N-acyl-L-homoserine Lactone-producing Rhizosphere Bacteria.” PLANT CELL AND ENVIRONMENT 29.5 (2006): 909–918. Print.
@article{371663,
  abstract     = {N-acyl-L-homoserine lactone (AHL) signal molecules are utilized by Gram-negative bacteria to monitor their population density (quorum sensing) and to regulate gene expression in a density-dependent manner. We show that Serratia liquefaciens MG1 and Pseudomonas putida IsoF colonize tomato roots, produce AHL in the rhizosphere and increase systemic resistance of tomato plants against the fungal leaf pathogen, Alternaria alternata. The AHL-negative mutant S. liquefaciens MG44 was less effective in reducing symptoms and A. alternata growth as compared to the wild type. Salicylic acid (SA) levels were increased in leaves when AHL-producing bacteria colonized the rhizosphere. No effects were observed when isogenic AHL-negative mutant derivatives were used in these experiments. Furthermore, macroarray and Northern blot analysis revealed that AHL molecules systemically induce SA- and ethylene-dependent defence genes (i.e. PR1a, 26 kDa acidic and 30 kDa basic chitinase). Together, these data support the view that AHL molecules play a role in the biocontrol activity of rhizobacteria through the induction of systemic resistance to pathogens.},
  author       = {Schuhegger, Regina and Ihring, Alexandra and Gantner, Stephan and Bahnweg, G{\"u}nther and Knappe, Claudia and Vogg, Gerd and Hutzler, Peter and Schmid, Michael and Van Breusegem, Frank and Eberl, Leo and Hartmann, Anton and Langebartels, Christian},
  issn         = {0140-7791},
  journal      = {PLANT CELL AND ENVIRONMENT},
  keyword      = {Lycopersicon esculentum Mill.,Alternaria alternata,Serratia liquefaciens,quorum sensing,salicylic acid,SERRATIA-LIQUEFACIENS MG1,PSEUDOMONAS-AERUGINOSA 7NSK2,SALICYLIC-ACID ACCUMULATION,MEDIATED GENE-REGULATION,DISEASE RESISTANCE,BOTRYTIS-CINEREA,HOST PLANTS,EXPRESSION,RHIZOBACTERIA,ARABIDOPSIS},
  language     = {eng},
  number       = {5},
  pages        = {909--918},
  title        = {Induction of systemic resistance in tomato by N-acyl-L-homoserine lactone-producing rhizosphere bacteria},
  url          = {http://dx.doi.org/10.1111/j.1365-3040.2005.01471.x},
  volume       = {29},
  year         = {2006},
}

Altmetric
View in Altmetric
Web of Science
Times cited: