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Transcriptomic impact of AWR5 effector expression in S. cerevisiae

ABSTRACT: The type III effector (T3E) AWR5 from the phytopathogen Ralstonia solanacearum causes disease in many plants relevant in agriculture. Heterologous expression in yeast of AWR5 from an integrated tetO promoter caused strong growth inhibition. In this series of experiments we investigate the possible changes in the transcriptional profile in a time-course (2, 4 and 6 h) response to AWR5 production.

ORGANISM(S): Saccharomyces cerevisiae

PROVIDER: GSE70202 | GEO | 2015/12/31

SECONDARY ACCESSION(S): PRJNA287835

REPOSITORIES: GEO

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Transcriptomic impact of AWR5 effector expression in S. cerevisiae

Project description:The type III effector (T3E) AWR5 from the phytopathogen Ralstonia solanacearum causes disease in many plants relevant in agriculture. Heterologous expression in yeast of AWR5 from an integrated tetO promoter caused strong growth inhibition. In this series of experiments we investigate the possible changes in the transcriptional profile in a time-course (2, 4 and 6 h) response to AWR5 production. Yeast strains were grown overnight in rich YPD medium with doxycycline 15 Âµg/ml (repressing conditions), then normalized to OD600=0.05 and grown resumed in YPD+dox (non-inducing conditions) or YPD (inducing conditions). Samples were taken at 2, 4 or 6 hours for each condition. Two biological replicates were made for each time point.

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Project description:affy_ralstonia_peeters_medicago - We have identified two essential virulence determinants (GALA7, a type III secretion effector and HpaP, a chaperone-like protein) of Ralstonia solanacearum for the infection and colonisation of the host plant Medicago truncatula. The scope of this project is to identify the GALA7 and HpaP-specific transcriptome alteration. For this purpose wild type and mutant infected root material (13h and 72h postinfection) will be analysed on M. truncatula affymetrix chips. Medicago truncatula (A17 line) are grown in vitro on Farheus medium (with Nitrogen source) plantlets are inoculated with water R. solanacearum wt, gala7 and hpap mutants, and root tips are collected at 13h and 72h postinoculation. Experiment was performed 3 times independently. 4 bacteria conditions x 2 harvest times x 3 biological repeats = 24 samples Keywords: gene knock out,normal vs disease comparison,time course,treated vs untreated comparison 24 arrays - Medicago

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