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Volumn 9, Issue 4, 2006, Pages 414-420

Systemic immunity

Author keywords

[No Author keywords available]

Indexed keywords

GENE EXPRESSION REGULATION; GENETICS; IMMUNOLOGY; METABOLISM; PLANT; PLANT DISEASE; REVIEW; SIGNAL TRANSDUCTION;

EID: 33747052346     PISSN: 13695266     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.pbi.2006.05.013     Document Type: Review
Times cited : (345)

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    • Arabidopsis sfd mutants affect plastidic lipid composition and suppress dwarfing, cell death, and the enhanced disease resistance phenotypes resulting from the deficiency of a fatty acid desaturase
    • Nandi A., Krothapalli K., Buseman C.M., Li M., Welti R., Enyedi A., and Shah J. Arabidopsis sfd mutants affect plastidic lipid composition and suppress dwarfing, cell death, and the enhanced disease resistance phenotypes resulting from the deficiency of a fatty acid desaturase. Plant Cell 15 (2003) 2383-2398
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    • The Arabidopsis thaliana dihydroxyacetone phosphate reductase gene SUPPRESSSOR OF FATTY ACID DESATURASE DEFICIENCY1 is required for glycerolipid metabolism and for the activation of systemic acquired resistance
    • •] provide strong genetic and biochemical evidence that systemic signalling/perception is dependent upon a lipid-derived signalling molecule.
    • •] provide strong genetic and biochemical evidence that systemic signalling/perception is dependent upon a lipid-derived signalling molecule.
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    • Role of salicylic acid and fatty acid desaturation pathways in ssi2-mediated signaling
    • The SSI2 gene encodes a stearoyl-acyl carrier protein (ACP) desaturase. A previous study had shown that glycerol application mimicked the ssi2 phenotype, leading to the accumulation of SA and the induction of PR genes, thus linking SA signalling to glycerol. A comprehensive genetic analysis of the ssi2 phenotypes in double-mutant backgrounds concluded, first, that ssi2-triggered signalling requires components of both the SA and the fatty acid pathways (i.e. EDS1, PAD4, EDS5, SID2, FAD7 and FAD8); second, that the fatty acid desaturase fad7 fad8 double mutants suppress the ssi2-triggered increase in SA levels; and third, that glycerol- and ssi2-mediated signalling pathways overlap. This paper provides a sobering perspective, highlighting the complexity of the SA signalling network and linking primary carbon and fatty acid metabolism with SA signalling.
    • ••], provides a potential new avenue for the exploration of the relationship between lipid signalling and SAR.
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    • Arabidopsis SENESCENCE-ASSOCIATED GENE101 stabilizes and signals within an enhanced disease susceptibility1 complex in plant innate immunity
    • Feys B.J., Wiermer M., Bhat R.A., Moisan L.J., Medina-Escobar N., Neu C., Cabral A., and Parker J.E. Arabidopsis SENESCENCE-ASSOCIATED GENE101 stabilizes and signals within an enhanced disease susceptibility1 complex in plant innate immunity. Plant Cell 17 (2005) 2601-2613
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    • Secretome analysis reveals an Arabidopsis lipase involved in defense against Alternaria brassicicola
    • GLIP1 lipase is a member of the α/βserine hydrolase family, which includes SABP2, EDS1 and PAD4. Secretion of GLP1 is induced by SA, and loss of GLIP1 function renders plants susceptible to the necrotrophic A. brassicicola but not to hemi-biotrophic Pst. GLIP1 disrupts spore integrity, and this requires functional lipase activity. GLIP1 is shown to encode dual functions as pre-treatment of infected leaves of glip1 abrogated the induction of local and systemic cell death by A. brassicicola whereas exogenous application of GLIP1 alone did not, indicating that GLIP1 (like DIR1-overexpressing transgenic plants, which do not exhibit constitutive SAR) modifies or chaperones an signal that is generated by A. brassicicola. Consistent with the divergent signalling networks that are engaged during Pst and A. brassicicola infections, preliminary data suggest that GLIP expression is ethylene-dependent, whereas its secretion is SA-dependent.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.