SOS - too many signals for systemic acquired resistance?

被引:242
作者
Dempsey, D'Maris Amick [1 ]
Klessig, Daniel F. [1 ]
机构
[1] Cornell Univ, Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA
基金
美国国家科学基金会;
关键词
ACID-BINDING PROTEIN-2; SALICYLIC-ACID; METHYL SALICYLATE; ARABIDOPSIS-THALIANA; TRANSLOCATED SIGNAL; PLANT DEFENSES; IMMUNITY; RESPONSES; LIGHT; GLYCEROL-3-PHOSPHATE;
D O I
10.1016/j.tplants.2012.05.011
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Following pathogen infection, activation of systemic acquired resistance (SAR) in uninfected tissues requires transmission of a signal(s) from the infected tissue via the vasculature. Several candidates for this long-distance signal have been identified, including methyl salicylate (MeSA), an SFD1/GLY1-derived glycerol-3-phosphate (G3P)-dependent signal, the lipid-transfer protein DIR1, the dicarboxylic acid azelaic acid (AzA), the abietane diterpenoid dehydroabietinal (DA), jasmonic acid (JA), and the amino acid-derivative pipecolic acid (Pip). Some of these signals work cooperatively to activate SAR and/or regulate MeSA metabolism. However, Pip appears to activate SAR via an independent pathway that may impinge on these other signaling pathway(s) during de novo salicylic acid (SA) biosynthesis in the systemic tissue. Thus, a complex web of cross-interacting signals appears to activate SAR.
引用
收藏
页码:538 / 545
页数:8
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