The rise, fall and resurrection of chemical induced resistance agents

M Yassin, J Ton, S Rolfe, TA Valentine, M Cromley, NH Holden, A Newton*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

29 Citations (Scopus)
59 Downloads (Pure)


Since the discovery that the plant immune system could be augmented for improved deployment against biotic stressors through the exogenous application of chemicals that lead to induced resistance (IR), many such IR-eliciting agents have been identified. Initially it was hoped that these chemical IR agents would be a benign alternative to traditional chemical biocides. However, owing to low efficacy and/or a realization that their benefits sometimes come at the cost of growth and yield penalties, chemical IR agents fell out of favour and were seldom used as crop protection products. Despite the lack of interest in agricultural use, researchers have continued to explore the efficacy and mechanisms of chemical IR. Moreover, as we move away from the approach of ‘zero tolerance’ toward plant pests and pathogens toward integrated pest management, chemical IR agents could have a place in the plant protection product list. In this review, we chart the rise and fall of chemical IR agents, and then explore a variety of strategies used to improve their efficacy and remediate their negative adverse effects.

Original languageEnglish
Pages (from-to)3900-3909
Number of pages10
JournalPest Management Science
Issue number9
Early online date17 Mar 2021
Publication statusPrint publication - Sept 2021


  • Induced resistance
  • priming
  • IPM
  • trade-offs
  • synergistic
  • biological control
  • induced resistance


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