2010
DOI: 10.1094/mpmi-23-2-0187
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Ethylene Signaling Renders the Jasmonate Response of Arabidopsis Insensitive to Future Suppression by Salicylic Acid

Abstract: Cross-talk between jasmonate (JA), ethylene (ET), and Salicylic acid (SA) signaling is thought to operate as a mechanism to fine-tune induced defenses that are activated in response to multiple attackers. Here, 43 Arabidopsis genotypes impaired in hormone signaling or defense-related processes were screened for their ability to express SA-mediated suppression of JA-responsive gene expression. Mutant cev1, which displays constitutive expression of JA and ET responses, appeared to be insensitive to SA-mediated s… Show more

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Cited by 166 publications
(101 citation statements)
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“…SA to suppress JA-induced gene expression (Leon-Reyes et al, 2010a). In two out of five experiments, we did not detect the negative effect of SA on ORA59-GFP accumulation, suggesting that this effect can be modulated by so far unidentified environmental conditions.…”
Section: Sa Targets Ora59 Accumulationmentioning
confidence: 55%
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“…SA to suppress JA-induced gene expression (Leon-Reyes et al, 2010a). In two out of five experiments, we did not detect the negative effect of SA on ORA59-GFP accumulation, suggesting that this effect can be modulated by so far unidentified environmental conditions.…”
Section: Sa Targets Ora59 Accumulationmentioning
confidence: 55%
“…Despite the fact that SA reduced ORA59 accumulation in 35S: ORA59-GFP plants, PDF1.2 gene expression could not be suppressed by SA in these plants (Figures 6C and 6D; see Supplemental Figure 4B online). Leon-Reyes et al (2010a) reported previously that overexpression of ORA59 negatively affects the ability of SA to suppress PDF1.2 gene expression. This finding highlights the importance of ORA59 in the outcome of the SA/JA antagonism.…”
Section: Erf1 and Ora59mentioning
confidence: 93%
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“…If this pathway is indeed utilised for the development of root-knot nematode infestation sites, how then would it be possible to explain the observations that such treatments resulted in increased host resistance? One possible explanation could come from the understanding that defense-like signaling pathways can have altered outcomes depending on how the network was previously stimulated [13,60,61]. The context of pre-exposure may therefore be critical with a consequence that jasmonate signaling processes normally induced by root-knot nematodes could become diverted into an immune response by such treatments.…”
Section: Discussionmentioning
confidence: 99%