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Gene Expression profiling of rice leaves undergoing an innate immune response induced by XOO secreted cell wall degrading enzyme LipA (Lipase/Esterase A)

ABSTRACT: The plant cell wall degrading enzyme LipA (Lipase/Esterase A) is a Type II secretion system secreted protein of Xanthomonas oryzae pv. oryzae (Xoo; the casual of bacterial leaf blight of rice). LipA is an Xoo virulence factor. However, LipA is a double edged sword for Xoo as it induces rice defense responses such as programmed cell death/hypersensitive response like reaction (HR) and callose deposition. Prior treatment with LipA enhances resistance against subseqent Xoo infection. In order to understand the molecular events associated with Esterase (LipA) induced innate immune responsein rice , whole genome transcriptional profiling was performed using Affymetrix Rice GeneChips

ORGANISM(S): Oryza sativa

PROVIDER: GSE49242 | GEO | 2014/12/31

SECONDARY ACCESSION(S): PRJNA213378

REPOSITORIES: GEO

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Whole genome expression profiling of rice leaves treated with Xanthomonas oryzae pv. oryzae secreted cell wall degrading lipase/esteraseA (LipA) at early time points, 30 min. and 120 min.

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Whole genome expression profiling of rice leaves treated with Xanthomonas oryzae pv. oryzae secreted cell wall degrading lipase/esteraseA (LipA) at early time points, 30 min. and 120 min.

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Project description:Cellulase, a Type II secretion system secreted protein of Xanthomonas oryzae pv. oryzae (Xoo; the casual of bacterial leaf blight of rice) is a potent inducer of rice defense responses such as hypersensitive response like reactions (HR), callose depositions, cell death associated with nuclear fragmentations and impart functional resistance against further Xoo inoculation In order to understand the molecular events associated with cellulase induced HR in rice, whole genome transcriptional profiling was performed using Affymetrix Rice GeneChips Keywords: Expression profiling of a hypersensitive reaction like response Leaves of 20 days old green house grown susceptible rice cultivar (Taichung Native-1; TN-1) were infiltrated with either 30-40μl of purified Xoo cellulase (5μg/ml) or with buffer (10mM potassium phosphate buffer pH 6.0) alone (as described in Jha et al. 2007; MPMI vol 20, pp 31-40). The plants were shifted to a growth chamber (28oC; 80% relative humidity; 12/12h light/dark cycle) 48 hours before the treatment. 20-30 leaf pieces covering the infiltrated zone from each of the treatments were harvested 12 h after infiltration. Total RNA isolated from the pooled samples was subjected for expression analysis using Affymetrix GeneChip System. The experiment was repeated with three different biological replicates using RNA isolated from three batches of rice leaves treated with the freshly purified Xoo cellulase and the buffer

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affy_xoo_rice-Transcriptomics-based identification of Xoo strain BAI3 Talc targets in rice

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