Project PRD000569

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Summary

Title

The redoxproteome: protein nitrosylation and glutathionylation as regulatory mechanisms during plant defense responses to pathogens

Description

The present work is directed at studying changes at the proteome level in Arabidopsis thaliana leaves in response to Pseudomonas syringae virulent (Pst) and avirulent (Pst avrRpt2) strains. Arabidopsis leaves were sampled from challenged plants at 4, 8 and 24 hours post inoculation. Proteins were TCA-acetone-phenol extracted and subjected to 2-DE (5-8 pH range) and MS/MS (MALDI-TOF-TOF) analysis. Out of 800 matched spots on each of the 36 gels analysed, 147 spots were either absent in at least one of the conditions studied (time or treatments; qualitative variable spots) or differentially accumulated between time and treatments (quantitative variable spots). Out of the 24 proteins successfully identified over TAIR10 database, 23 have not been reported previously in similar proteomics studies of the Arabidopsis thaliana-Pseudomonas syringae interaction. The exhaustive statistical analysis performed, including principal component and heat map, showed that 24 hours post inoculation can clearly discriminate the challenged plants from the control. The protein change occurred early (4 hours post inoculation) following the virulent pathogen infection, whereas the change occurred later (24 hours post inoculation) following the avirulent pathogen inoculation. Concerning the variable proteins, three behavioural groups can be observed: group 1 (common protein changes in response to virulent and avirulent pathogen infection), group 2 (protein changes in response to virulent pathogen infection) and group 3 (protein changes in response to avirulent pathogen infection). Differential identified proteins following the pathogen infection belonged to different groups including those of oxidative stress defence, enzymes of metabolic pathways and molecular chaperones.

Sample Processing Protocol

Not available

Data Processing Protocol

Not available

Contact

Besma Sghaier-Hammami, Molecular and Biochemistry

Submission Date

28/09/2011

Publication Date

19/10/2011

Tissue

Not available

Experiment Type

Bottom-up proteomics

Assay count

1

Publication

Publication pending

Assay

Showing 1 - 1 of 1 results
# Accession Title Proteins Peptides Unique Peptides Spectra Identified Spectra View in Reactome
1 19325 A proteomic approach analyzing the Arabidopsis thaliana response to virulent and avirulent Pseudomonas syringae strains 19 35 34 248 35