Systemic acquired resistance in potato

D. J. Navarre, P. Thomas, C. Brown, P. Kachroo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Systemic acquired resistance (SAR) is a defense mechanism that is increasingly being exploited for crop protection. However, successful utilization of SAR will likely require optimization of defense induction for each crop followed by a determination of the pathogens against which SAR is effective. We are examining the capacity of different potato tissues to mount an SAR response. Both free and bound basal salicylic acid (SA) concentrations were measured in leaves, flowers, stems, roots and tubers. SA levels were the highest in leaves and flowers, with concentrations of up to 15 μg/gram fresh weight. Relative to Arabidopsis or tobacco, high SA levels were also found in stems, roots and tubers. SAR induction by different SAR elicitors, including harpin and BTH was examined. PR-1 was expressed constitutively, in the absence of elicitation. Little or no increase in PR-1 gene expression was seen after treatment with SAR inducers.

Original languageEnglish
Title of host publicationXXVI International Horticultural Congress
Subtitle of host publicationPotatoes, Healthy Food for Humanity: International Developments in Breeding, Production, Protection and Utilizaton
Number of pages5
StatePublished - 2003

Publication series

NameActa Horticulturae
ISSN (Print)0567-7572


  • Crop protection
  • Disease resistance
  • Pathogen
  • Plant defense
  • Salicylic acid

ASJC Scopus subject areas

  • Horticulture


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