Project description:Pepino Mosaic Virus (PepMV) consists a major pathogenic threat in the greenhouses worldwide and has a devasting impact on tomato global production. PepMV belongs to the Potexvirus genus of the Flexiviridae family. PepMV has a viral RNA genome of approximately 6400 nucleotides long that contains five open reading frames (ORFs) and 4 major genotypes have been characterized. TomCr3, an indigenous virulent PepMV strain derived from the Chilean (CH2) genotype, was isolated in Crete, Greece and was used for the mechanical infection of Belladonna F1 hybrid tomato seedlings. Here, we present the results of a deep RNA-sequencing (RNA-seq) analysis performed to characterize the dynamic expression profile of tomato genes upon PepMV infection, including tomato transcription factors.
Project description:We constructed two independent small RNA libraries from leaves of mock and Cucumber mosaic virus (CMV) infected tomatoes, respectively, and sequenced with a high-throughput Illumina Solexa system. Based on sequence analysis and hairpin structure prediction, a total of 50 known miRNAs (32 families) and 568 potentially candidate miRNAs (PC-miRNAs) were firstly identified in tomato, with 12 known miRNAs and 154 PC-miRNAs supported by both the 3p and 5p strands. Comparative analysis revealed 79 miRNAs (including 15 novel tomato miRNAs) and 40 PC-miRNAs were differentially expressed between the two libraries. Among these virus responsive miRNAs, expression patters of some novel tomato miRNAs and PC-miRNAs in mock and in CMV-Fny infected tomatoes were further validated by qRT-PCR. Moreover, we revealed 563 potential targets for 66 tomato miRNAs by the recently developed degradome sequencing approach, including 124 targets for 7 new tomato miRNAs and 97 targets for 24 PC-miRNAs. Target annotation for the newly identified miRNA and PC-miRNAs indicated that they were involved in multiple biological processes, including transcriptional regulation and virus resistance. Gene ontology analysis of these target transcripts demonstrated that stress response- and photosynthesis-related genes were most affected in CMV-Fny infected tomatoes.
Project description:The aim of this study was to compare the tomato global transcriptional profiles in response to host attack by ToMV and Fol in order to identify genomic differences and similarities in incompatible interactions between a foliar and a vascular pathogen. In order to identify a set of genes of interest in tomato plants infected with F. oxysporum f. sp. lycopersici (Fol) and Tomato Mosaic Virus (ToMV) a transcriptional analysis was performed. Tomato genes differentially expressed upon inoculation with Fol and ToMV were identified at 2 days post-inoculation, using an un-inoculated sample as reference.
Project description:We constructed two independent small RNA libraries from leaves of mock and Cucumber mosaic virus (CMV) infected tomatoes, respectively, and sequenced with a high-throughput Illumina Solexa system. Based on sequence analysis and hairpin structure prediction, a total of 50 known miRNAs (32 families) and 568 potentially candidate miRNAs (PC-miRNAs) were firstly identified in tomato, with 12 known miRNAs and 154 PC-miRNAs supported by both the 3p and 5p strands. Comparative analysis revealed 79 miRNAs (including 15 novel tomato miRNAs) and 40 PC-miRNAs were differentially expressed between the two libraries. Among these virus responsive miRNAs, expression patters of some novel tomato miRNAs and PC-miRNAs in mock and in CMV-Fny infected tomatoes were further validated by qRT-PCR. Moreover, we revealed 563 potential targets for 66 tomato miRNAs by the recently developed degradome sequencing approach, including 124 targets for 7 new tomato miRNAs and 97 targets for 24 PC-miRNAs. Target annotation for the newly identified miRNA and PC-miRNAs indicated that they were involved in multiple biological processes, including transcriptional regulation and virus resistance. Gene ontology analysis of these target transcripts demonstrated that stress response- and photosynthesis-related genes were most affected in CMV-Fny infected tomatoes. Examination of small RNAs and their targets in mock and CMV-Fny infected tomatoes.
Project description:Gene expression analysis of chrysanthemum infected with three different viruses including Cucumber mosaic virus, Tomato spotted wilt virus, and Potato virus X have been performed using the chrysanthemum 135K microarray.
Project description:Gene expression analysis of chrysanthemum infected with three different viruses including Cucumber mosaic virus, Tomato spotted wilt virus, and Potato virus X have been performed using the chrysanthemum 135K microarray. Mock and each virus infected chrysanthemum plants were subjected for microarray analysis.
Project description:Transcriptome sequencing from Nicotiana benthamiana leaves non-infected and infected with Turnip mosaic virus at 6 days post inoculation.