The Sesquiterpene Botrydial Produced by Botrytis cinerea Induces the Hypersensitive Response on Plant Tissues and Its Action Is Modulated by Salicylic Acid and Jasmonic Acid Signaling
| Autor: | María Elisa Gonzalez, Fernando Matías Romero, Franco Rubén Rossi, Isidro G. Collado, María Marina, Fernando Luis Pieckenstain, Andrés Gárriz |
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| Rok vydání: | 2011 |
| Předmět: |
Hypersensitive response
Physiology Arabidopsis Cyclopentanes Bridged Bicyclo Compounds chemistry.chemical_compound Gene Expression Regulation Plant Tobacco Arabidopsis thaliana Oxylipins Plant Diseases Botrytis cinerea Aldehydes biology Arabidopsis Proteins Effector Jasmonic acid fungi Callose food and beverages General Medicine biology.organism_classification Cell biology Plant Leaves chemistry Biochemistry Botrytis Signal transduction Salicylic Acid Sesquiterpenes Agronomy and Crop Science Salicylic acid Signal Transduction |
| Zdroj: | Molecular Plant-Microbe Interactions®. 24:888-896 |
| ISSN: | 1943-7706 0894-0282 |
| DOI: | 10.1094/mpmi-10-10-0248 |
| Popis: | Botrytis cinerea, as a necrotrophic fungus, kills host tissues and feeds on the remains. This fungus is able to induce the hypersensitive response (HR) on its hosts, thus taking advantage on the host's defense machinery for generating necrotic tissues. However, the identity of HR effectors produced by B. cinerea is not clear. The aim of this work was to determine whether botrydial, a phytotoxic sesquiterpene produced by B. cinerea, is able to induce the HR on plant hosts, using Arabidopsis thaliana as a model. Botrydial induced the expression of the HR marker HSR3, callose deposition, and the accumulation of reactive oxygen species and phenolic compounds. Botrydial also induced the expression of PR1 and PDF1.2, two pathogenesis-related proteins involved in defense responses regulated by salicylic acid (SA) and jasmonic acid (JA), respectively. A. thaliana and tobacco plants defective in SA signaling were more resistant to botrydial than wild-type plants, as opposed to A. thaliana plants defective in JA signaling, which were more sensitive. It can be concluded that botrydial induces the HR on its hosts and its effects are modulated by host signaling pathways mediated by SA and JA. |
| Databáze: | OpenAIRE |
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