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Research Articles : RNAseq-based Transcriptome Analysis of Burkholderia glumae Quorum Sensing
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  • Research Articles : RNAseq-based Transcriptome Analysis of Burkholderia glumae Quorum Sensing
저자명
Sunyoung Kim, Jungwook Park, Ji Hyeon Kim, Jongyun Lee, Bongjun Bang, Ingyu Hwang, Young-Su Seo
간행물명
The Plant Pathology Journal KCI
권/호정보
2013년|29권 3호(통권127호)|pp.249-259 (11 pages)
발행정보
한국식물병리학회|한국
파일정보
정기간행물|ENG|
PDF텍스트(4.82MB)
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영문초록

Burkholderia glumae causes rice grain rot and sheath rot by producing toxoflavin, the expression of which is regulated by quorum sensing (QS). The QS systems of B. glumae rely on N-octanoyl homoserine lactone, synthesized by TofI and its cognate receptor TofR, to activate the genes for toxoflavin biosynthesis and an IclR-type transcriptional regulator gene, qsmR. To understand genome-wide transcriptional profiling of QS signaling, we employed RNAseq of the wild-type B. glumae BGR1 with QS-defective mutant, BGS2 (BGR1 tofI::Ω) and QS-dependent transcriptional regulator mutant, BGS9 (BGR1 qsmR::Ω). A comparison of gene expression profiling among the wild-type BGR1 and the two mutants before and after QS onset as well as gene ontology (GO) enrichment analysis from differential expressed genes (DEGs) revealed that genes involved in motility were highly enriched in TofI-dependent DEGs, whereas genes for transport and DNA polymerase were highly enriched in QsmR-dependent DEGs. Further, a combination of pathways with these DEGs and phenotype analysis of mutants pointed to a couple of metabolic processes, which are dependent on QS in B. glumae, that were directly or indirectly related with bacterial motility. The consistency of observed bacterial phenotypes with GOs or metabolic pathways in QS-regulated genes implied that integration RNAseq with GO enrichment or pathways would be useful to study bacterial physiology and phenotypes.

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