Salicylic Acid, a Multifaceted Hormone to Combat Disease

Salicylic Acid, a Multifaceted Hormone to Combat Disease 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Phytopathology Annual Reviews

Salicylic Acid, a Multifaceted Hormone to Combat Disease

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Publisher
Annual Reviews
Copyright
Copyright © 2009 by Annual Reviews. All rights reserved
ISSN
0066-4286
eISSN
1545-2107
D.O.I.
10.1146/annurev.phyto.050908.135202
Publisher site
See Article on Publisher Site

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.

Journal

Annual Review of PhytopathologyAnnual Reviews

Published: Sep 8, 2009

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