Comparative transcriptome profiling of a rice line carrying Xa39 and its parents triggered by Xanthomonas oryzae pv. oryzae provides novel insights into the broad-spectrum hypersensitive response

BMC Genomics
Fan ZhangYong-Li Zhou

Abstract

Bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), is a devastating rice disease worldwide. Xa39 is a resistance (R) gene with a broad-spectrum hypersensitive response (BSHR) to Xoo. Nevertheless, the molecular mechanisms of resistance mediated by Xa39 remain unclear. In this study, the transcriptome profiling of a rice line carrying Xa39 and its parents at the early stage of Xoo infection were investigated. A rice introgression line H471 carrying Xa39 exhibited a typical local hypersensitive response phenotype, accompanied by programmed cell death after inoculation with the Xoo Philippines' race 9b. Transcriptome profiling of H471 and its parents at 1 and 2 days post-inoculation was performed using RNA sequencing. In total, 306 differentially expressed genes (DEGs) were identified in H471 compared with its recurrent parent Huang-Hua-Zhan after inoculation with Xoo. Among them, 121 (39.5%) genes, with functional enrichments that were related to defense response, protein amino acid phosphorylation, and apoptosis, were found to be constitutively expressed. The other 185 (60.5%) genes, with GO terms that belonged to defense response, were significantly responsive to Xoo infection in H471. Ten up-regulated and 12 down...Continue Reading

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Citations

Apr 20, 2019·Scientific Reports·Stephen P Cohen, Jan E Leach
Aug 4, 2019·Ecotoxicology and Environmental Safety·Congting YeQingshun Quinn Li

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Datasets Mentioned

BETA
GSE62488

Methods Mentioned

BETA
Illumina sequencing
RNA-seq
RNA assay
PCR

Software Mentioned

Cufflinks
Cuffcompare
TopHat
Cuffdiff
Illumina instrument
Primer
house Perl script
cBot

Related Concepts

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Apoptosis

Apoptosis is a specific process that leads to programmed cell death through the activation of an evolutionary conserved intracellular pathway leading to pathognomic cellular changes distinct from cellular necrosis