Project description:Leaf mold disease caused by Cladosporium fulvum is a major disease in cultivated tomato plants and affects global tomato production. Some Cf genes, of which Cf-16 is an effective gene for resisting tomato leaf mold, are associated with leaf mold resistance; however, the molecular mechanism is largely unknown. We used comparative transcriptome analysis of C. fulvum-resistant (cv. Ontario7816, including the Cf-16 gene) and C. fulvum-susceptible (cv. Moneymaker) tomato lines to identify differentially expressed genes (DEGs) at 4 and 8 days postinfection with C. fulvum. Our results provide new insights into the resistance response mechanism of Cf genes to C. fulvum, especially the unique characteristics of Cf-16 in response to C. fulvum infection.
Project description:Sl2183 is an updated version of the previous tomato metabolic model (iHY3410), with additional reactions and metabolites, IDs converted into the BiGG nomenclature and biomass reactions for leaf, stem and root, allowing to generate a multi-organ model (see Gerlin et al., Plant Physiol. for additional information).
Project description:SlJMJ4 is a positive regulator of leaf senescence in tomato and mediates ABA-induced leaf senescence by activating the transcription of many genes related to ABA synthesis and signaling, and transcription regulation via removal of their H3K27me3 levels.
Project description:Tomato fruit ripening is associated with a dramatic increase in susceptibility to the fungal pathogen Botrytis cinerea, the causal agent of gray mold. Mature green fruit, prior to ripening, are largely resistant to B. cinerea, whereas red fruit, at the end of ripening, are susceptible to B. cinerea infection. We used microarrays to detail the gene expression changes that are induced by B. cinerea when tomato fruit at unripe and ripe stages are infected. Keywords: plant responses to pathogens
Project description:ELICITOM project aims to decipher the complex regulation of tomato induced resistance to pathogens. Here, we use a classical elicitor of tomato defenses, ie beta-aminobutyric acid (BABA). This unusual amino acid triggers a strong resistance to the oomycete pathogen Phytophthora parasitica as well as to Oidium neolycopersici (powdery mildew) to a lesser extent. No resistance could be observed towards the grey mold (Botrytis cinerea). Transcriptomic data were generated from RNA extracted from tomato leaves (Solanum lycopercum cv "Marmande") sprayed with 10 mM BABA compared to control organs treated with water, 24 h after treatment. Mapping was achieved on Solanum lycopersicum cv Heinz1706 genome (release ITAG2,3).
Project description:TMV-resistant (N), -susceptible (n), and enhanced susceptible mutant sun1-1 (N) tomato were grown in asceptic conditions in growth chambers (25º, 16hr/8hr light dark). 4-5 week old tomato were treated with TMV leaf sap or mock leaf sap, and leaf tissue was collected after 3, 9, and 27 hours. RNA was isolated from each sample (leaf tissue from one plant/one treatment/one timepoint), using standard TIGR protocols, and 25ug of total RNA was labeled using TIGR indirect labeling protocols. The experiment was repeated three times. Keywords: Direct comparison
Project description:Tomato fruit ripening is associated with a dramatic increase in susceptibility to the fungal pathogen Botrytis cinerea, the causal agent of gray mold. Mature green fruit, prior to ripening, are largely resistant to B. cinerea, whereas red fruit, at the end of ripening, are susceptible to B. cinerea infection. We used microarrays to detail the gene expression changes that are induced by B. cinerea when tomato fruit at unripe and ripe stages are infected. Experiment Overall Design: Tomato fruit at mature green and red ripe stages were wound inoculated with a water suspension of B. cinerea conidia. Twenty four hours post inoculation fruit pericarp and epicarp tissue around and including the inoculation sites was collected and the total RNA extracted. Total RNA was also collected from healthy and mock inoculated fruit.
Project description:The size of tomato fruits are largely dependent on growth conditions. To obtain insights on how light intensity contributes to translocation from a leaf and a fruit, we developed a plant irradiation system based on light-emitting diodes (LEDs) to a leaf. By using this system, we investigated the changes of transcript profiles of tomato leaves and fruits grown under different light conditions.
Project description:We profiled small RNAs obtained from B. cinerea-infected tomato leaf and fruit during a time course. Examination of small RNAs from B. cinerea-treated tomato leaf and fruit tissue over a time course.
