Format

Send to

Choose Destination
Trends Plant Sci. 2012 Sep;17(9):538-45. doi: 10.1016/j.tplants.2012.05.011. Epub 2012 Jun 29.

SOS - too many signals for systemic acquired resistance?

Author information

1
Boyce Thompson Institute for Plant Research, Ithaca, NY 14853, USA.

Abstract

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.

PMID:
22749315
DOI:
10.1016/j.tplants.2012.05.011
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center