The role of ROS signaling in cross-tolerance: From model to crop

Llse Barrios Perez, Patrick J. Brown

Research output: Contribution to journalReview articlepeer-review


Reactive oxygen species (ROS) are key signaling molecules produced in response to biotic and abiotic stresses that trigger a variety of plant defense responses. Cross-tolerance, the enhanced ability of a plant to tolerate multiple stresses, has been suggested to result partly from overlap between ROS signaling mechanisms. Cross-tolerance can manifest itself both as a positive genetic correlation between tolerance to different stresses (inherent crosstolerance), and as the priming of systemic plant tolerance through previous exposure to another type of stress (induced cross-tolerance). Research in model organisms suggests that cross-tolerance could be used to benefit the agronomy and breeding of crop plants. However, research under field conditions has been scarce and critical issues including the timing, duration, and intensity of a stressor, as well as its interactions with other biotic and abiotic factors, remain to be addressed. Potential applications include the use of chemical stressors to screen for stress-resistant genotypes in breeding programs and the agronomic use of chemical inducers of plant defense for plant protection. Success of theseapplications will rely on improving our understanding of how ROS signals travel systemically and persist over time, and of how genetic correlations between resistance to ROS, biotic, and abiotic stresses are shaped by cooperative and antagonistic interactions within the underlying signaling pathways

Original languageEnglish (US)
Article number754
Pages (from-to)1-6
Number of pages6
JournalFrontiers in Plant Science
Issue numberDEC
StatePublished - Dec 23 2014
Externally publishedYes


  • Acclimation
  • GST
  • Oxidative stress
  • Oxylipin
  • Quantitative disease resistance
  • Systemic resistance

ASJC Scopus subject areas

  • Plant Science


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