Project description:Fungal effectors play important roles in inciting disease development on host plants. We identified an effector (Secreted in Xylem4, SIX4) in an Arabidopsis infecting isolate (Fo5176) of the root-infecting fungal pathogen Fusarium oxysporum and demonstrated this effector is required for full virulence. To explore the role of Fo5176_SIX4 we use whole transcriptome profiling of root tissues from plants overexpressing this effector (35sSIX4) versus wild-type (Col-0) plants after F. oxysporum infection. Published in DOI:10.1007/978-3-319-42319-7_4. Belowground Defence Strategies in Plants.
Project description:Fungal effectors play important roles in inciting disease development on host plants. We identified an effector (Secreted in Xylem4, SIX4) in an Arabidopsis infecting isolate (Fo5176) of the root-infecting fungal pathogen Fusarium oxysporum and demonstrated this effector is required for full virulence. To explore the role of Fo5176_SIX4 we use whole transcriptome profiling of root tissues from plants overexpressing this effector (35sSIX4) versus wild-type (Col-0) plants after F. oxysporum infection. We grew both WT and 35sSIX4 plants for four weeks in soil. After four weeks the plants were infected with Fusarium oxyporum isolate Fo5176, trays covered with a plastic dome and incubated at 28C. There were four independent replicates of each treatment and each replicate contained root tissue from 20 plants. Each replicate (8 in total) was harvested 4 days post inoculation and the resulting RNA was used for hybridization to an Affymetrix ATH1 chip.
Project description:To better understand the regulatory mechanisms of IbBBX24-mediated Fusarium oxysporum Schlecht. f. sp. batatas (Fob) resistance, we performed ChIP-Seq analysis using overexpression line infected with Fob at 1 dpi.
Project description:To better understand the regulatory mechanisms of IbBBX24-mediated Fusarium oxysporum Schlecht. f. sp. batatas (Fob) resistance, we performed RNA-Seq analysis using overexpression line, RNA interference and WT plants infected with Fob at 1 dpi.
Project description:Comparison of expression differences between Col-0 Arabidopsis thaliana and transgenic plants in the same background carrying three different Fusarium oxysporum effector genes
Project description:A GSTF8 promoter fragment fused to the luciferase reporter gene was used in a forward genetic screen for Arabidopsis mutants with up-regulated GSTF8 promoter activity and identified the esr1-1 (enhanced stress response 1) mutant which also conferred increased resistance to the fungal pathogen Fusarium oxysporum. RNA-Seq was conducted to compare esr1-1 and wild-type (GSTF8 promoter::luciferase reporter line JC66 in Col-0 background) transcriptomes for altered gene expression.
Project description:Pathogen infection triggers transcriptional reprogramming in host plants, however we still know little about the dynamics of the pathogen-induced defense transcriptome. The goal of this study was to investigate the dynamic reprogramming of the defense transcriptome in response to Fusarium oxysporum infection in Arabidopsis using RNA-seq technology and to provide a comprehensive analysis of genes underlying the innate immune response against the fungal pathogen. Our results suggest that the Arabidopsis transcriptome is reprogrammed to co-ordinately express multiple positive and negative regulators following pathogen infection to modulate defense gene expression and disease resistance. Our study identified a number of novel genes responsive to pathogen infection and provided a rich source of pathogen responsive genes for further functional characterization. Four samples (M1DPI, M6DPI, F1DPI and F6DPI; M=mock treated; F=Fusarium oxysporum infected; DPI=day post inoculation) were sequenced to identify pathogen responsive genes in each time point. Each sample was sequenced once, i.e. without biological replicate.
