ABSTRACT: Field pathogenomics identifies lineages of Magnaporthe oryzae in rice leaf samples with blast symptoms collected from Italy, Philippines, and Bangladesh
Project description:Rice blast is one of the most serious diseases and is caused by Magnaporthe grisea. SHZ-2, an indica cultivar with broad spectrum resistance to multiple races of the blast pathogen, was crossed to TXZ-13, a blast susceptible but high-quality variety, to produce one BC3 line, BC10 line, which showed strong to moderate blast resistance over eight cropping seasons in the field. In this study, we compared the transcription between blast-resistant and -susceptive lines by custom microarray. Keywords: time course, blast infection, disease response
Project description:This SuperSeries is composed of the following subset Series: GSE8517: Magnaporthe oryzae gene expression during biotrophic invasion of rice using version 2 of the Agilent Magnaporthe grisea Array (G4137B). GSE8518: Rice gene expression during biotrophic invasion by the rice blast fungus Magnaporthe oryzae using the Agilent Rice Array (G4138A). Keywords: SuperSeries Refer to individual Series
Project description:Magnaporthe oryzae (rice blast) and the root-knot nematode Meloidogyne graminicola are causing two of the most important pathogenic diseases jeopardizing rice production. Here, we show that root-knot nematode infestation on rice roots leads to important above-ground changes in plant immunity gene expression, which is correlated with significantly enhanced susceptibility to blast disease.
Project description:Rice blast is one of the most serious diseases and is caused by Magnaporthe grisea. SHZ-2, an indica cultivar with broad spectrum resistance to multiple races of the blast pathogen, was crossed to TXZ-13, a blast susceptible but high-quality variety, to produce one BC3 line, BC10 line, which showed strong to moderate blast resistance over eight cropping seasons in the field. In this study, we compared the transcription between blast-resistant and -susceptive lines by custom microarray. Keywords: time course, blast infection, disease response Comparison between blast- and mock-infected rice. Biological replicates: 3 control (mock) and 3 blast-infected at each time point, independently grown and harvested at 24 and 48 hours after inoculation. Each sample was prepared with whole plant 5 cm above ground and was pooled from 5 plants grown under the same conditions.
Project description:Rice blast disease is a major threat to rice production worldwide, but the mechanisms underlying rice resistance to the causal agent Magnaporthe oryzae remain elusive. In this whole-genome transcriptome study of rice early defense response to M. oryzae, we applied Affymetrix Rice Genome Genechip to compare the compatible and incompatible rice-M. oryzae interactions in 24 hours post-inoculation.
Project description:We report that the homeobox trasncription factor called HOX7 controls hyphae-associated genes, autophagy and cell cycle related genes necessary for appressorium development in the rice blast fungus Magnaporthe oryzae. We also report that the ste transcription factor MST12 regulates gene functions involved in septin reorientation.
Project description:To investigate the responses of resistance gene Pi54 at transcriptome level in blast resistant transgenic rice line TP-Pi54 during infection by Magnaporthe oryzae, we studied the co-expression analysis using microarray along with susceptible non-transgenic line Taipei 309 (TP). Suitable controls for both lines were used. The comparative analysis of differentially expressed genes was conducted.
Project description:Mycelium from the rice blast fungus Magnaporthe oryzae was grown in both rich medium and under nutrient limiting conditions. Genes were identified that were more highly expressed in one condition as compared to the other.
Project description:Mycelium from the rice blast fungus Magnaporthe oryzae was grown in both rich medium and under nutrient limiting conditions. Genes were identified that were more highly expressed in one condition as compared to the other.
Project description:We created a mutant in the MAP kinase-encoding Pmk1 gene of the rice blast fungus Magnaporthe oryzae (pmk1AS) that renders the gene sensitive to inhibition by 1NA-PP1. Fungal gene expression was compared during infection of rice sheath by the M. oryzae pmk1AS mutant in the presence and absence of 1NA-PP1.
