Chemical inducers of systemic immunity in plants

Qing Ming Gao, Aardra Kachroo, Pradeep Kachroo

Research output: Contribution to journalReview articlepeer-review

55 Scopus citations


Systemic acquired resistance (SAR) is a highly desirable form of resistance that protects against a broad-spectrum of related or unrelated pathogens. SAR involves the generation of multiple signals at the site of primary infection, which arms distal portions against subsequent secondary infections. The last decade has witnessed considerable progress, and a number of chemical signals contributing to SAR have been isolated and characterized. The diverse chemical nature of these chemicals had led to the growing belief that SAR might involve interplay of multiple diverse and independent signals. However, recent results suggest that coordinated signalling from diverse signalling components facilitates SAR in plants. This review mainly discusses organized signalling by two such chemicals, glycerol-3-phoshphate and azelaic acid, and the role of basal salicylic acid levels in G3P-conferred SAR.

Original languageEnglish
Pages (from-to)1849-1855
Number of pages7
JournalJournal of Experimental Botany
Issue number7
StatePublished - Apr 2014

Bibliographical note

Funding Information:
Work in our laboratories is supported by grants from National Science Foundation (MCB 0421914, IOS 051909) and United Soybean Board (1244).


  • Chemical signals
  • defence
  • plant metabolites
  • signalling
  • systemic.

ASJC Scopus subject areas

  • Physiology
  • Plant Science


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