Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR15671600_1.fastq.gz | Fastqsanger.gz | |||
| SRR15671600_2.fastq.gz | Fastqsanger.gz | |||
| SRR15671601_1.fastq.gz | Fastqsanger.gz | |||
| SRR15671601_2.fastq.gz | Fastqsanger.gz | |||
| SRR15671602_1.fastq.gz | Fastqsanger.gz |
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Project description:Xanthomonas campestris pv. campestris (Xcc) is a major bacterial pathogen of cruciferous plants worldwide. The pathogen produces polysaccharides including extracellular cyclic glucan, xanthan, and extracellular enzymes that are key virulence factors. Different Xcc mutants (8397-defective in xanthan and 8523- defective in extracellular glucans) have been obtained and characterized in previously, wich shown to be less infective than the wild type strain when inoculated in N.benthamiana, wich has shown to be an excellent model for the study of Xcc-plant interaction. The objective of this work is evaluate this compounds functions in the plant-pathogen interaction, in particular in the plant transcriptoma modulation to confer susceptibility or resistance to the infection. Plant gene expression profiles would be obtained from independently inoculated leaves of N.benthamiana with the following strains of xanthomonas: Xcc. 8004 (wild type), Xcc. 8397 (xanthan minus), Xcc. 8523 (glucan minus), ant water (control). Leaves discs will be collected at 24 hs post infection and immediately submerged in liquid N2. Total RNA will be extracted with plant RNA specific kits (RNA easy QIAGen), treated with DNase, purified and quantified. Keywords: Reference design 11 hybs total
2007-09-01 | E-GEOD-8276 | biostudies-arrayexpress
Project description:Xanthomonas campestris pv. campestris (Xcc) is a major bacterial pathogen of cruciferous plants worldwide. The pathogen produces polysaccharides including extracellular cyclic glucan, xanthan, and extracellular enzymes that are key virulence factors. Different Xcc mutants (8397-defective in xanthan and 8523- defective in extracellular glucans) have been obtained and characterized in previously, wich shown to be less infective than the wild type strain when inoculated in N.benthamiana, wich has shown to be an excellent model for the study of Xcc-plant interaction. The objective of this work is evaluate this compounds functions in the plant-pathogen interaction, in particular in the plant transcriptoma modulation to confer susceptibility or resistance to the infection. Plant gene expression profiles would be obtained from independently inoculated leaves of N.benthamiana with the following strains of xanthomonas: Xcc. 8004 (wild type), Xcc. 8397 (xanthan minus), Xcc. 8523 (glucan minus), ant water (control). Leaves discs will be collected at 24 hs post infection and immediately submerged in liquid N2. Total RNA will be extracted with plant RNA specific kits (RNA easy QIAGen), treated with DNase, purified and quantified. Keywords: Reference design
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Project description:In the mutualisms involving certain pseudomyrmicine ants and different myrmecophytes (i.e., plants sheltering colonies of specialized “plant-ant” species in hollow structures), the ant venom contributes to the host plant biotic defenses by inducing the rapid paralysis of defoliating insects and causing intense pain to browsing mammals. Using integrated transcriptomic and proteomic approaches, we identified the venom peptidome of the plant-ant Tetraponera aethiops (Pseudomyrmecinae). The transcriptomic analysis of its venom glands revealed that 40 % of the assembled contigs encoded only seven peptide precursors related to the ant venom peptides from the A-superfamily. Among the 12 peptide masses detected by liquid chromatography-mass spectrometry (LC-MS), nine mature peptide sequences were characterized and confirmed through proteomic analysis. These venom peptides, called pseudomyrmecitoxins (PSDTX), share amino acid sequence homologies with myrmeciitoxins known for their dual offensive and defensive functions on both insects and mammals. Furthermore, we demonstrated through reduction/alkylation of the crude venom that four PSDTXs were homo- and heterodimeric. Thus, we provide the first indication that the defensive venom composition of the ant genus Tetraponera is a streamlined peptidome. We provide the first insights into the defensive venom composition of the ant genus Tetraponera indicative of a streamlined peptidome.
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