Ethylene‐dependent salicylic acid regulates an expanded cell death response to a plant pathogen

O'Donnell, Philip J.; Jones, Jeffrey B.; Antoine, F.R.; Ciardi, Joseph A.; Klee, Harry J.

doi:10.1046/j.1365-313x.2001.00968.x

Cited by 148 publications

(118 citation statements)

References 42 publications

Supporting

Mentioning

110

Contrasting

Unclassified

Order By: Relevance

“…However, the reduced accumulation of SA and JA and the suppressed expression of SA-and JAresponsive genes in GH3-8-overexpressing plants strongly suggest that GH3-8-mediated Xoo resistance does not require the activation of SA and JA signaling. This result is consistent with a previous report that showed that the basal resistance for bacterial pathogens in tomato (Solanum lycopersicum) is SAindependent (O'Donnell et al, 2001). However, suppressing auxin signaling by the activation of GH3-8 repressed JA and SA signaling ( Figure 5).…”

Section: Gh3-8 Mediates a Basal Resistance That Does Not Require The supporting

confidence: 94%

Activation of the Indole-3-Acetic Acid–Amido Synthetase GH3-8 Suppresses Expansin Expression and Promotes Salicylate- and Jasmonate-Independent Basal Immunity in Rice

et al. 2008

View full text Add to dashboard Cite

New evidence suggests a role for the plant growth hormone auxin in pathogenesis and disease resistance. Bacterial infection induces the accumulation of indole-3-acetic acid (IAA), the major type of auxin, in rice (Oryza sativa). IAA induces the expression of expansins, proteins that loosen the cell wall. Loosening the cell wall is key for plant growth but may also make the plant vulnerable to biotic intruders. Here, we report that rice GH3-8, an auxin-responsive gene functioning in auxin-dependent development, activates disease resistance in a salicylic acid signaling– and jasmonic acid signaling–independent pathway. GH3-8 encodes an IAA–amino synthetase that prevents free IAA accumulation. Overexpression of GH3-8 results in enhanced disease resistance to the rice pathogen Xanthomonas oryzae pv oryzae. This resistance is independent of jasmonic acid and salicylic acid signaling. Overexpression of GH3-8 also causes abnormal plant morphology and retarded growth and development. Both enhanced resistance and abnormal development may be caused by inhibition of the expression of expansins via suppressed auxin signaling.

show abstract

Section: Gh3-8 Mediates a Basal Resistance That Does Not Require The supporting

confidence: 94%

Activation of the Indole-3-Acetic Acid–Amido Synthetase GH3-8 Suppresses Expansin Expression and Promotes Salicylate- and Jasmonate-Independent Basal Immunity in Rice

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Incompatible interactions have been extensively studied principally because of their direct and practical applications in the field (Vlot et al, 2009), whereas much less 55 consideration has been paid to the compatible interactions (O'Donnell et al, 2001;Huang et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Metabolic fingerprinting of Tomato Mosaic Virus infected Solanum lycopersicum

López-Gresa

Lisón

Kim

et al. 2012

Journal of Plant Physiology

View full text Add to dashboard Cite

general time-dependent decrease in organic acids, amino acids (excluding asparagine), phenylpropanoids and rutin was observed in individual leaves. In addition, metabolite alterations were also found to correlate with the developmental stage of the leaf: high levels of organic acids, some amino acids, phenylpropanoids, and flavonoids were found in lower leaves while elevated amounts of sugars were present in the upper ones. 35Moreover, a marked variation in the content of some metabolites was also observed to be associated to the asymptomatic ToMV infection both in inoculated and systemically infected leaves. While flavonoids accumulated in virus-inoculated leaves, increased levels of phenylpropanoids were observed in non-inoculated leaves where ToMV actively replicates. Finally, diurnal changes in the metabolite content were also 40 observed: an increase of amino acids and organic acids (except glutamic acid) were observed in the samples collected in the morning, whereas sugars and secondary metabolite levels increased in the tomato leaves harvested in the evening.

show abstract

“…Impaired ethylene biosynthesis and responsiveness can lead to altered cell expansion, cell elongation, senescence, abscission, cell death, fruit ripening, root hair formation, lateral root development, nodulation, and sex determination (Bleecker et al, 1988;Guzmán and Ecker, 1990;Oeller et al, 1991;Lanahan et al, 1994;Tanimoto et al, 1995;Wilkinson et al, 1997;O'Donnell et al, 2001;Xu et al, 2006;Boualem et al, 2008;Penmetsa et al, 2008;Hattori et al, 2009;Wang et al, 2010;Lewis et al, 2011). A framework of the ethylene signaling pathway has been assembled using a combination of genetic and biochemical analyses in Arabidopsis (Arabidopsis thaliana; Kendrick and Chang, 2008;Stepanova and Alonso, 2009;Zhao and Guo, 2011).…”

mentioning

confidence: 99%

Differential Control of Ethylene Responses byGREEN-RIPEandGREEN-RIPE LIKE1Provides Evidence for Distinct Ethylene Signaling Modules in Tomato

Brandizzí

et al. 2012

Plant Physiology

View full text Add to dashboard Cite

The factors that mediate specific responses to the plant hormone ethylene are not fully defined. In particular, it is not known how signaling at the receptor complex can control distinct subsets of ethylene responses. Mutations at the Green-ripe (Gr) and reversion to ethylene sensitivity1 (rte1) loci, which encode homologous proteins of unknown function, influence ethylene responses in tomato (Solanum lycopersicum) and Arabidopsis (Arabidopsis thaliana), respectively. In Arabidopsis, AtRTE1 is required for function of the ETR1 ethylene receptor and acts predominantly through this receptor via direct protein-protein interaction. While most eudicot families including the Brassicaceae possess a single gene that is closely related to AtRTE1, we report that members of the Solanaceae family contain two phylogenetically distinct genes defined by GR and GREEN-RIPE LIKE1 (GRL1), creating the possibility of subfunctionalization. We also show that SlGR and SlGRL1 are differentially expressed in tomato tissues and encode proteins predominantly localized to the Golgi. A combination of overexpression in tomato and complementation of the rte1-3 mutant allele indicates that SlGR and SlGRL1 influence distinct but overlapping ethylene responses. Overexpression of SlGRL1 in the Gr mutant background provides evidence for the existence of different ethylene signaling modules in tomato that are influenced by GR, GRL1, or both. In addition, overexpression of AtRTE1 in tomato leads to reduced ethylene responsiveness in a subset of tissues but does not mimic the Gr mutant phenotype. Together, these data reveal species-specific heterogeneity in the control of ethylene responses mediated by members of the GR/RTE1 family.The gaseous plant hormone ethylene influences many aspects of plant development and mediates responses to biotic and abiotic stresses (Abeles et al., 1992). Impaired ethylene biosynthesis and responsiveness can lead to altered cell expansion, cell elongation, senescence, abscission, cell death, fruit ripening, root hair formation, lateral root development, nodulation, and sex determination (Bleecker et al

show abstract

Ethylene‐dependent salicylic acid regulates an expanded cell death response to a plant pathogen

Cited by 148 publications

References 42 publications

Activation of the Indole-3-Acetic Acid–Amido Synthetase GH3-8 Suppresses Expansin Expression and Promotes Salicylate- and Jasmonate-Independent Basal Immunity in Rice

Activation of the Indole-3-Acetic Acid–Amido Synthetase GH3-8 Suppresses Expansin Expression and Promotes Salicylate- and Jasmonate-Independent Basal Immunity in Rice

Metabolic fingerprinting of Tomato Mosaic Virus infected Solanum lycopersicum

Differential Control of Ethylene Responses byGREEN-RIPEandGREEN-RIPE LIKE1Provides Evidence for Distinct Ethylene Signaling Modules in Tomato

Contact Info

Product

Resources

About