Project description:Ustilago maydis is a basidiomycete fungus that causes smut disease in maize. Most prominent symptoms of the disease are plant tumors, which can be induced by U. maydis on all aerial parts of the plant. We identified two linked genes, pit1 and pit2, which are specifically expressed during plant colonization. Deletion mutants for either pit1 or pit2 are unable to induce tumor development and elicit plant defense responses. We used the Affymetrix maize genome array to analyze the transcriptional responses of maize to deletion pit1 and pit2 mutants and found plant responses to both mutants being not significantly distinguishable.
Project description:Ustilago maydis, the causal agent of corn smut disease, is a dimorphic fungus alternating between a saprobic haploid budding form, and an obligate pathogenic filamentous dikaryon. Maize responds to U. maydis colonization by producing highly modified tumorous structures and it is only within these plant galls that the fungus sporulates giving rise to melanized sexual spores, the teliospores. Previously we identified a regulatory protein from the APSES family of transcription factors, which we named Ust1, whose absence in yeast cells led to filamentous growth and the production of highly pigmented spore-like structures in culture. In this study, we analyzed the transcriptome of a ∆ust1 deletion mutant.
Project description:The biotrophic fungal pathogen Ustilago maydis cause common smut in maize, and lead to gall formation on all aerial organs, especially on maize kernel thus reduce yield. The interaction of U. maydis with maize is a well-established model to study the interaction between maize and biotrophic pathogen. U. maydis infection could activate host immune responses including: ROS accumulation, protease activation, salicylic acid signaling. U. maydis employ several strategies to overcome maize immune response, thus initial the biotrophic interaction with host. It has been suggested that genetic factors of maize host affected the disease severity of U. maydis infection, here we investigated the transcriptome profile of resistance and susceptible maize lines upon U. maydis infection, thus propose candidate maize genes involved in the defense response in maize to corn smut cause by U. maydis.
Project description:Rice false smut is a common fungal disease caused by Ustilaginoidea virens. As it only scatter occured in panicle at florescence, little information is known about this crop disease. In the previous study, 3 uninterrupted infecting stages were divided and each stage was monitored by Solexa/Illumina’s digital gene expression (DGE) system, and all data were submitted to NCBI (GSE32010). As the disease was greatly affected by environment and to eliminate environment factor, an experimental replication was done in 2011. Samples collection and analysis were described in GSE32010. Our results contribute to the knowledge of understanding rice molecular mechanism in response to U. virens infection. Four samples including one control (CK) and three infected (S1, S2, S3) were analyzed.
Project description:In this study, we aimed to adopt the transcriptome sequencing technology to obtain the different changes of transcriptome profiles after infecting with CVS in human neuroblastoma cell line SH-SY5Y. And then, through systematic bioinformatics analysis, we hope to find useful clues for the pathogenesis of Rabies.
Project description:In this study, we aimed to adopt the transcriptome sequencing technology to obtain the different changes of transcriptome profiles after infecting with CTN in human neuroblastoma cell line SH-SY5Y. And then, through systematic bioinformatics analysis, we hope to find useful clues for the pathogenesis of Rabies.