J Integr Plant Biol. ›› 2011, Vol. 53 ›› Issue (6): 412-428.DOI: 10.1111/j.1744-7909.2011.01043.x

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Salicylic Acid and Its Function in Plant Immunity

Chuanfu An and Zhonglin Mou*   

  1. Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611 USA
  • Received:2011-02-14 Accepted:2011-04-14 Published:2011-05-03
  • About author:*Corresponding author Tel: 352-392-0285; Fax: 352-392-5922; E-mail: zhlmou@ufl.edu

Abstract:

The small phenolic compound salicylic acid (SA) plays an important regulatory role in multiple physiological processes including plant immune response. Significant progress has been made during the past two decades in understanding the SA-mediated defense signaling network. Characterization of a number of genes functioning in SA biosynthesis, conjugation, accumulation, signaling, and crosstalk with other hormones such as jasmonic acid, ethylene, abscisic acid, auxin, gibberellic acid, cytokinin, brassinosteroid, and peptide hormones has sketched the finely tuned immune response network. Full understanding of the mechanism of plant immunity will need to take advantage of fast developing genomics tools and bioinformatics techniques. However, elucidating genetic components involved in these pathways by conventional genetics, biochemistry, and molecular biology approaches will continue to be a major task of the community. High-throughput method for SA quantification holds the potential for isolating additional mutants related to SA-mediated defense signaling.

An C, Mou Z (2011) Salicylic acid and its function in plant immunity. J. Integr. Plant Biol. 53(6), 412–428.

Key words: salicylic acid (SA), systemic acquired resistance, NPR1, crosstalk, SA biosensor, plant defense

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