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Whole genome tomato transcriptional response to Tetranychus evansi herbivory.

ABSTRACT: The red spider mite, Tetranychus evansi, is a oligophagous specialist mite pest of Solanaceae plants. Here, we described tomato transcriptional responses to T. evansi feeding and compared them to responses to tomato-adapted and -non-adapted strains of generalist herbivorous spider mite Tetranychus urticae. We used microarray to assess global gene expression in Solanum lycopersicum cv. Heinz 1706 upon T. evansi attack.

ORGANISM(S): Solanum lycopersicum

PROVIDER: GSE227740 | GEO | 2023/07/10

REPOSITORIES: GEO

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Whole genome tomato transcriptional response to Tetranychus urticae herbivory [Heinz1706]

Project description:The two-spotted spider mite, Tetranychus urticae, is one of the most significant mite pests in agriculture that can feed on more than 1,100 plant hosts, including model plants Arabidopsis thaliana and tomato, Solanum lycopersicum. Here, we described tomato transcriptional responses to spider mite feeding and compared them to Arabidopsis in order to determine conserved and divergent responses to this pest. 2,133 differentially expressed genes (DEGs) were detected at 1, 3, 6, 12 or 24 hours post spider mite infestation (hpi) relative to non-infested control plants. Based on Biological Process Gene Ontology annotations, improved in the course of our analysis, DEGs were grouped in 60 significantly enriched gene sets that highlighted perception of the spider mite attack (1 hpi), metabolic reprogramming (3-6 hpi), and establishment and maintenance of the defense responses (6-24 hpi). We used microarray to assess global gene expression in Solanum lycopersicum cv. Heinz 1706 upon Tetranychus urticae attack. 1 month old tomato plants were subjected to Tetranychus urticae attack through application of 100 adult mites on a terminal leaflet of leaf 3 for various periods of time (timecourse scenario) or hundreds of mites for 1 hour (feeding site scenario).

2015-01-05 | E-GEOD-61074 | biostudies-arrayexpress

Whole genome tomato transcriptional response to Tetranychus urticae herbivory [Heinz1706]

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Host plant adaptation of a polyphagous herbivore shapes transcriptome of both herbivore and host

Project description:In an experimental evolutionary set-up, we transferred a genetically diverse strain of the spider mite Tetranychus urticae from its common host bean to tomato where replicated populations were allowed to adapt. By sampling the transcriptomes of non-adapted and adaptes mites feeding on bean and tomato, we identified gene-expression changes in the spider mite affiliated with tomato adaptation. Transcriptional analysis revealed that both constitutive gene-expression levels as well as the transcriptional plasticity of genes were affected. Specifically, tomato adaptation resulted in a large set of constitutively down-regulated genes of unknown function in adapted mites compared to non-adapted mites. Additionally, upon tomato exposure, adapted mites exhibited an increased transcriptional plasticity of genes coding for detoxifying enzymes and xenobiotic transporters. Remarkably, adapted mites further exhibited a differential effect on host plant physiology compared to non-adapted mites. Adapted mites induced a greater chlorotic area on tomato leaves and triggered attenuated induced responses relative to those induced by non-adapted mites.

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