RT info:eu-repo/semantics/article
T1 Arabidopsis response to the spider mite Tetranychus urticae depends on the regulation of reactive oxygen species homeostasis
A1 Santamaría Fernández, Mª Estrella
A1 Arnáiz Alonso, Ana
A1 Velasco Arroyo, Blanca
A1 Grbic, Vojislava
A1 Diaz, Isabel
A1 Martínez, Manuel
K1 Herbivory
K1 Plant signalling
K1 Biotecnología
K1 Biotechnology
K1 Bioquímica
K1 Biochemistry
AB 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.
PB Nature
YR 2018
FD 2018
LK http://hdl.handle.net/10259/10108
UL http://hdl.handle.net/10259/10108
LA eng
NO This work was supported by projects BIO2014-53508-R and 618105-FACCE-Era Net Plus from Ministerio de Economía y Competitividad.
DS Repositorio Institucional de la Universidad de Burgos
RD 31-ene-2025