Arabidopsis thaliana gene expression changes upon chitosan and CAPE treatments
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ABSTRACT:
PROVIDER: PRJNA1000456 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR25472750_1.fastq.gz | Fastqsanger.gz | |||
| SRR25472750_2.fastq.gz | Fastqsanger.gz | |||
| SRR25472751_1.fastq.gz | Fastqsanger.gz | |||
| SRR25472751_2.fastq.gz | Fastqsanger.gz | |||
| SRR25472752_1.fastq.gz | Fastqsanger.gz |
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Project description:The phytopathological studies often deal with approaches involving the employment of high elicitor concentrations necessary to provoke responses that could be easily observed and quantified. We tested the range of gene expression changes for a low concentration chitosan elicitor treatment of seedlings, 0.001%, and we compared it with the higher one, 0.01%. We uncover both the quantitative and qualitative changes in gene expressions between the two treatments. Further on, we tested if the gene expression can be modified by the treatment with the defence-related CAPE peptide (10 uM). We discovered several interesting candidate genes specific for each of treatments, and combination of treatments, that would be worth of further more focused genetic studies.
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Project description:Current protection strategies against the fungal pathogen Botrytis cinerea rely on a combination of conventional fungicides and host genetic resistance. Defence elicitors can stimulate plant defence mechanisms through a phenomenon known as priming. Priming results on a faster and/or stronger expression of resistance upon pathogen attack. This work aims to study priming of a commercial formulation of the elicitor Chitosan. Treatments with Chitosan result in induced resistance in solanaceous and brassicaceous plants. Large-scale transcriptomic analysis in this study revealed that Chitosan primes gene expression at early time-points after infection. Four conditions were analysed using microarrays: (i) water-treated and non-infected plants (Water + Mock); (ii) Chitosan-treated and non-infected plants (Chitosan + Mock); (iii) water-treated and B. cinerea-infected plants (Water + B. cinerea); (iv) Chitosan-treated and B. cinerea-infected plants (Chitosan + B. cinerea). Inoculations were performed four days after treatment with Chitosan, and leaf discs from four independent plants (biological replicates) per treatment were sampled at 6 h, 9 h and 12 h post-inoculation (hpi) with water mock or B. cinerea spores.
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