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Salicylic Acid, a multifaceted hormone to combat disease.

Annual review of phytopathology (2009-04-30)
A Corina Vlot, D'Maris Amick Dempsey, Daniel F Klessig
ABSTRACT

For more than 200 years, the plant hormone salicylic acid (SA) has been studied for its medicinal use in humans. However, its extensive signaling role in plants, particularly in defense against pathogens, has only become evident during the past 20 years. This review surveys how SA in plants regulates both local disease resistance mechanisms, including host cell death and defense gene expression, and systemic acquired resistance (SAR). Genetic studies reveal an increasingly complex network of proteins required for SA-mediated defense signaling, and this process is amplified by several regulatory feedback loops. The interaction between the SA signaling pathway and those regulated by other plant hormones and/or defense signals is also discussed.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Salicylic acid, ACS reagent, ≥99.0%
Sigma-Aldrich
Salicylic acid, ReagentPlus®, ≥99%
Supelco
Salicylic acid, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Supelco
Salicylic acid, Pharmaceutical Secondary Standard; Certified Reference Material
USP
Salicylic acid, United States Pharmacopeia (USP) Reference Standard
Salicylic acid, European Pharmacopoeia (EP) Reference Standard
Supelco
Salicylic acid, 1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material, Cerilliant®
Sigma-Aldrich
Salicylic acid, ≥99%, FG
Sigma-Aldrich
Salicylic acid, BioXtra, ≥99.0%
Sigma-Aldrich
Salicylic acid, suitable for plant cell culture
Sigma-Aldrich
Salicylic acid, puriss. p.a., ≥99.0% (T)
Sigma-Aldrich
Salicylic acid, meets analytical specification of Ph. Eur., BP, USP, 99.5-100.5% (calc. to the dried substance)