The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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MoJMJ1, Encoding a Histone Demethylase Containing JmjC Domain, Is Required for Pathogenic Development of the Rice Blast Fungus, Magnaporthe oryzae

  • Huh, Aram (Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University) ;
  • Dubey, Akanksha (Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University) ;
  • Kim, Seongbeom (Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University) ;
  • Jeon, Junhyun (Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University) ;
  • Lee, Yong-Hwan (Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University)
  • Received : 2016.11.13
  • Accepted : 2017.01.07
  • Published : 2017.04.01
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Abstract

Histone methylation plays important roles in regulating chromatin dynamics and transcription in eukaryotes. Implication of histone modifications in fungal pathogenesis is, however, beginning to emerge. Here, we report identification and functional analysis of a putative JmjC-domain-containing histone demethylase in Magnaporthe oryzae. Through bioinformatics analysis, we identified seven genes, which encode putative histone demethylases containing JmjC domain. Deletion of one gene, MoJMJ1, belonging to JARID group, resulted in defects in vegetative growth, asexual reproduction, appressorium formation as well as invasive growth in the fungus. Western blot analysis showed that global H3K4me3 level increased in the deletion mutant, compared to wild-type strain, indicating histone demethylase activity of MoJMJ1. Introduction of MoJMJ1 gene into ${\Delta}Mojmj1$ restored defects in pre-penetration developments including appressorium formation, indicating the importance of histone demethylation through MoJMJ1 during infection-specific morphogenesis. However, defects in penetration and invasive growth were not complemented. We discuss such incomplete complementation in detail here. Our work on MoJMJ1 provides insights into H3K4me3-mediated regulation of infection-specific development in the plant pathogenic fungus.

Keywords

References

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