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Weights in the balance: jasmonic acid and salicylic acid signaling in root-biotroph interactions.

Molecular plant-microbe interactions : MPMI (2009-06-16)
Caroline Gutjahr, Uta Paszkowski
ABSTRACT

Work on the interaction of aerial plant parts with pathogens has identified the signaling molecules jasmonic acid (JA) and salicylic acid (SA) as important players in induced defense of the plant against invading organisms. Much less is known about the role of JA and SA signaling in root infection. Recent progress has been made in research on plant interactions with biotrophic mutualists and parasites that exclusively associate with roots, namely arbuscular mycorrhizal and rhizobial symbioses on one hand and nematode and parasitic plant interactions on the other hand. Here, we review these recent advances relating JA and SA signaling to specific stages of root colonization and discuss how both signaling molecules contribute to a balance between compatibility and defense in mutualistic as well as parasitic biotroph-root interactions.

MATERIALS
Product Number
Brand
Product Description

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