Intercellular salicylic acid accumulation is important for age-related resistance in Arabidopsis to Pseudomonas syringae

2004 ◽  
Vol 65 (4) ◽  
pp. 197-209 ◽  
Author(s):  
Robin K. Cameron ◽  
Kasia Zaton
Keyword(s):  
Salicylic Acid ◽  
Pseudomonas Syringae ◽  
Age Related ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation

scholarly journals Coronatine Promotes Pseudomonas syringae Virulence in Plants by Activating a Signaling Cascade that Inhibits Salicylic Acid Accumulation

2012 ◽  
Vol 11 (6) ◽  
pp. 587-596 ◽  
Author(s):  
Xiao-yu Zheng ◽  
Natalie Weaver Spivey ◽  
Weiqing Zeng ◽  
Po-Pu Liu ◽  
Zheng Qing Fu ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Pseudomonas Syringae ◽  
Signaling Cascade ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation

scholarly journals Salicylic Acid Accumulation in Barley Is Pathogen Specific but Not Required for Defense-Gene Activation

1998 ◽  
Vol 11 (7) ◽  
pp. 702-705 ◽  
Author(s):  
Laurence Vallélian-Bindschedler ◽  
Jean-Pierre Métraux ◽  
Patrick Schweizer
Keyword(s):  
Salicylic Acid ◽  
Hordeum Vulgare ◽  
Pseudomonas Syringae ◽  
Gene Activation ◽  
Defense Gene ◽  
Biotrophic Pathogen ◽  
Pathogenesis Related ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation ◽  
Related Proteins

Barley (Hordeum vulgare) seedlings were inoculated with the biotrophic pathogen Erysiphe graminis f. sp. hordei, the biotrophic nonhost pathogen E. graminis f. sp. tritici, and the necrotrophic nonhost pathogen Pseudomonas syringae pv. syringae. The levels of free salicylic acid and of salicylic-acid conjugates remained low after infection with E. graminis f. sp. hordei or E. graminis f. sp. tritici while they increased after inoculation with P. syringae pv. syringae. Pathogenesis-related proteins PR1, PR3 (chitinase), PR5 (thaumatin-like), and PR9 (peroxidase) accumulated after inoculation with all three pathogens.

scholarly journals Feedback Control of the Arabidopsis Hypersensitive Response

2004 ◽  
Vol 17 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Chu Zhang ◽  
Annie Tang Gutsche ◽  
Allan D. Shapiro
Keyword(s):  
Hydrogen Peroxide ◽  
Salicylic Acid ◽  
Pseudomonas Syringae ◽  
Hypersensitive Response ◽  
Ion Leakage ◽  
Wild Type ◽  
Regulatory Circuits ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation ◽  
Hydrogen Peroxide Accumulation

The plant hypersensitive response (HR) to avirulent bacterial pathogens results from programmed cell death of plant cells in the infected region. Ion leakage and changes in signaling components associated with HR progression were measured. These studies compared Arabidopsis mutants affecting feedback loops with wild-type plants, with timepoints taken hourly. In response to Pseudomonas syringae pv. tomato DC3000·avrB, npr1-2 mutant plants showed increased ion leakage relative to wild-type plants. Hydrogen peroxide accumulation was similar to that in wild type, but salicylic acid accumulation was reduced at some timepoints. With DC3000·avrRpt2, similar trends were seen. In response to DC3000·avrB, ndr1-1 mutant plants showed more ion leakage than wild-type or npr1-2 plants. Hydrogen peroxide accumulation was delayed by approximately 1 h and reached half the level seen with wild-type plants. Salicylic acid accumulation was similar to npr1-2 mutant plants. With DC3000·avrRpt2, ndr1-1 mutant plants showed no ion leakage, no hydrogen peroxide accumulation, and minimal salicylic acid accumulation. Results with a ndr1-1 and npr1-2 double mutant were similar to ndr1-1. A model consistent with these data is presented, in which one positive and two negative regulatory circuits control HR progression. Understanding this circuitry will facilitate HR manipulation for enhanced disease resistance.

scholarly journals Pathogen-inducibleCaUGT1is involved in resistance response against TMV infection by controlling salicylic acid accumulation

FEBS Letters ◽  
2009 ◽  
Vol 583 (13) ◽  
pp. 2315-2320 ◽  
Author(s):  
Boo-Ja Lee ◽  
Sung-Kyu Kim ◽  
Soo Bok Choi ◽  
Jungdon Bae ◽  
Ki-Jeong Kim ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Resistance Response ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation

Probenazole induces systemic acquired resistance in tobacco through salicylic acid accumulation

2002 ◽  
Vol 61 (4) ◽  
pp. 197-203 ◽  
Author(s):  
Hideo Nakashita ◽  
Keiko Yoshioka ◽  
Michiko Yasuda ◽  
Takako Nitta ◽  
Yuko Arai ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Systemic Acquired Resistance ◽  
Acquired Resistance ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation
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