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E-GEOD-61833

ABSTRACT: Gene expression changes induced in Rice (Oryza sativa) leaves following treatment with any one of the following: wild type Xoo, lipopolysaccharide (LPS) and exopolysaccaride (EPS) deficient Xoo mutant; LPS proficient but EPS deficient Xoo mutant

PROVIDER: E-GEOD-61833 | ExpressionAtlas | 2016-05-03

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-61833-analysis-methods.tsv	Tabular
	E-GEOD-61833-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-61833-configuration.xml	Xml
	E-GEOD-61833-percentile-ranks.tsv	Tabular
	E-GEOD-61833.condensed-sdrf.tsv	Tabular

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Gene expression changes induced in Rice (Oryza sativa) leaves following treatment with any one of the following: wild type Xoo, lipopolysaccharide (LPS) and exopolysaccaride (EPS) deficient Xoo mutant; LPS proficient but EPS deficient Xoo mutant

Project description:Lipopolysaccharide is a Microbe Associated Molecular Pattern (MAMP) that is known to induce defense responses in plants. In rice we have shown that Xoo LPS induce callose deposition, reactive oxygen production and induced resistance response. The exopolysaccaride (EPS) secreted by Xoo might be involved in supressing these defense responses. We have performed transcriptional profiling of rice leaf gene expression changes after treatment with Xoo strains BXO1003 (LPS-, EPS-), BXO1002 (LPS+ EPS-) and BXO43 (wild type) along with milliQ treated leaves to identify the genes that are differentially expressed. RNA was isolated from mid veins of rice leaves 15 hours after injecting them with Xoo strains BXO1003 (LPS-, EPS-), BXO1002 (EPS-), BXO43 (wild type) or milli-Q water. The rice gene expression in each of the treatment was normalized based on the gene expression in the milli-Q treatment.

2015-06-30 | E-GEOD-61833 | biostudies-arrayexpress

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E-GEOD-61832

Project description:Gene expression changes induced in Rice (Oryza sativa) leaves by lipopolysaccharide (LPS) extracted from Xanthomonas oryzae pv. oryzae (Xoo) strain BXO43

2015-11-20 | E-GEOD-61832 | ExpressionAtlas

Oryza sativa

Project description:Gene expression changes induced in Rice (Oryza sativa) leaves following treatment with any one of the following: wild type Xoo, lipopolysaccharide (LPS) and exopolysaccaride (EPS) deficient Xoo mutant LPS proficient but EPS deficient Xoo mutant

| PRJNA262509 | ENA

Gene expression changes induced in Rice (Oryza sativa) leaves by lipopolysaccharide (LPS) extracted from Xanthomonas oryzae pv. oryzae (Xoo) strain BXO43

Project description:Lipopolysaccharide is a Microbe Associated Molecular Pattern (MAMP) that is known to induce defense responses in plants. We have shown that treatment of rice leaves with Xoo LPS induces callose deposition, reactive oxygen production and enhances resistance against subsequent infection by the pathogen. We have performed transcriptional profiling of rice leaves that are treated with Xoo LPS to identify differentially expressed genes.

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Gene expression changes induced in Rice (Oryza sativa) leaves by lipopolysaccharide (LPS) extracted from Xanthomonas oryzae pv. oryzae (Xoo) strain BXO43

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Transcriptome analysis of rice ABA deficient mutant Osaba1-1 and wild-type before and 72h after Xanthomonas oryzae pv. oryzae (Xoo) infection

Project description:ABA deficient mutant Osaba1-1 exhibits great resistance to Xanthomonas oryzae pv. oryzae (Xoo) infection. To investigate gene expression profile changes at whole genome level between Osaba1-1 and wild-type (Nipponbare) rice during Xoo infection, we employed microarray expression profiling as a discovery platform. Osaba1-1 and wild-type rice plants about 6.5 leaf stage were used in this experiment. For Xoo inoculation, tips (about 3cm) of the fifth and sixth fully expanded leaves were cut off, and then immersed into Xoo (PXO99 strain) inoculum (suspended in sterile distilled water containing 10mM MgCl2, OD≈0.5) immediately for about fifteen seconds. Inoculated rice leaves were collected (approximately 2 cm leaf fragment from the inoculation site) at 0h and 72h post inoculation. Three independent replicate samples were collected at each time point for microarray.

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Project description:affy_xoo_rice - affy_xoo_rice - The Bacterial Leaf Blight disease of rice is due to Xanthomonas oryzae pv. oryzae. As for many pathogenic bacteria, it relies on a type 3 secretion system that is devoted to the injection of type 3 effectors into the eukaryotic host cell. These proteins are meant to suppress host basal defense responses and/or mimic some host regulatory function promoting bacterial survey in the plant. We are interested in the functional analysis of a subgroup of Xoo T3Es, that are specialized in host cell transcriptome remodelling. These effectors, therefore called TAL for Transcription Activator-Like proteins (also named AvrBs3/PthA-like), are often key virulence factors essential to Xoo pathogenicity such as the effector protein Talc of african Xoo strain BAI3. Our goal is to understand its function during disease development, by identifying rice host genes that are being directly up- or down-regulated by Talc. To that end, we aim at performing Affymetrix transcriptomic analysis, comparing leaf samples of a susceptible rice line inoculated with Xoo to leaves challenged with a Talc-deficient mutant and water-treated leaves. Highly induced genes are likely to be Talc primary targets and therefore potentially good susceptibility gene candidates.-The goal of the experiment is to identify the rice genes up- or down-regulated by the type III effector Talc from Xoo African strain BAI3, upon the inoculation of susceptible rice leaves 24 hours post-infection. To that end, the experimental design includes the inoculation of Nipponbare rice leaves with the virulent Xoo strain BAI3, that will be compared to Nipponbare rice leaves inoculated with a talc K.O. mutant strain and water. Keywords: wt vs virulence mutant

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Transcriptome analysis of rice ABA deficient mutant Osaba1-1 and wild-type before and 72h after Xanthomonas oryzae pv. oryzae (Xoo) infection

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