Arabidopsis response to the spider mite Tetranychus urticae depends on the regulation of reactive oxygen species homeostasis
| Autor: | Vojislava Grbic, Ana Arnaiz, Manuel Martinez, Isabel Diaz, Blanca Velasco-Arroyo, M. Estrella Santamaria |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Arabidopsis lcsh:Medicine Biology 01 natural sciences Article Host-Parasite Interactions 03 medical and health sciences Spider mite Mite Animals Homeostasis Gene silencing Tetranychus urticae lcsh:Science Gene Glutathione Transferase chemistry.chemical_classification Reactive oxygen species Multidisciplinary Arabidopsis Proteins lcsh:R Hydrogen Peroxide biology.organism_classification Cell biology 030104 developmental biology Peroxidases chemistry lcsh:Q Signal transduction Tetranychidae 010606 plant biology & botany |
| Zdroj: | Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-13 (2018) |
| ISSN: | 2045-2322 |
| Popis: | Reactive oxygen species (ROS) are molecules that play a prominent role in plant response to numerous stresses, including plant interactions with herbivores. Previous findings indicate that Arabidopsis plants showed an increase in H2O2 accumulation after Tetranychus urticae infestation. Despite its importance, no information has been reported on the relationships between ROS-metabolizing systems and the spider mite-triggered plant-induced responses. In this work, four ROS-related genes that were differentially expressed between the resistant Bla-2 and the susceptible Kon Arabidopsis accessions were selected for the analysis. These genes encode proteins putatively involved in the generation (BBE22) and degradation (GPX7 and GSTU4) of H2O2, and in the degradation of ascorbate (AO). Overexpressing BBE22 and silencing GPX7, GSTU4 and AO resulted in higher leaf damage and better mite performance relative to the wild-type plants. Minor effects on H2O2 accumulation obscure major effects on the expression of genes related to ROS-metabolism and JA and SA signaling pathways, and on ROS-related enzymatic activities. In conclusion, the integration of ROS and ROS-related compounds and enzymes in the response of Arabidopsis to the spider mite T. urticae was confirmed. However, the complex network involved in ROS signaling makes difficult to predict the impact of a specific genetic manipulation. |
| Databáze: | OpenAIRE |
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