Signal regulators of systemic acquired resistance

Qing Ming Gao, Shifeng Zhu, Pradeep Kachroo, Aardra Kachroo

Research output: Contribution to journalArticlepeer-review

197 Scopus citations


Salicylic acid (SA) is an important phytohormone that plays a vital role in a number of physiological responses, including plant defense. The last two decades have witnessed a number of breakthroughs related to biosynthesis, transport, perception and signaling mediated by SA. These findings demonstrate that SA plays a crictical role in both local and systemic defense responses. Systemic acquired resistance (SAR) is one such SA-dependent response. SAR is a long distance signaling mechanism that provides broad spectrum and long-lasting resistance to secondary infections throughout the plant. This unique feature makes SAR a highly desirable trait in crop production. This review summarizes the recent advances in the role of SA in SAR and discusses its relationship to other SAR inducers.

Original languageEnglish
Article number228
JournalFrontiers in Plant Science
Issue numberAPR
StatePublished - Apr 13 2015

Bibliographical note

Publisher Copyright:
©2015 Gao, Zhu, Kachroo and Kachroo.


  • Glycerol-3-phosphate
  • Lipids
  • Plant defense
  • Reactive oxygen species
  • Systemic resistance

ASJC Scopus subject areas

  • Plant Science


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