Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Expression Patterns of Transposable Elements in Magnaporthe oryzae under Diverse Developmental and Environmental Conditions

  • Chung, Hyunjung (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Kang, Seogchan (Department of Plant Pathology & Environmental Microbiology, The Pennsylvania State University) ;
  • Lee, Yong-Hwan (Department of Agricultural Biotechnology, Interdisciplinary Program in Agricultural Genomics, Center for Fungal Genetic Resources, and Center for Fungal Pathogenesis, Seoul National University) ;
  • Park, Sook-Young (Department of Plant Medicine, Sunchon National University)
  • Received : 2020.03.17
  • Accepted : 2020.03.29
  • Published : 2020.03.31
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Abstract

The genome of the rice blast fungus Magnaporthe oryzae contains several types of transposable elements (TEs), and some TEs cause genetic variation that allows M. oryzae to evade host detection. We studied how five abundant TEs in rice pathogens, Pot3, Pot2, MAGGY, Line-like element (MGL) and Mg-SINE, are expressed under diverse conditions related to growth, development, and stress. Expression of Pot3 and Pot2 was activated in germinated conidia and mycelia treated with tricyclazole. Retrotransposon MAGGY was highly expressed in appressoria and tricyclazole-treated mycelia. MAGGY and Pot2 were also activated during the early and late stages of perithecia development. MGL was up-regulated in conidia and during conidial germination but not during appressorium formation. No noticeable expression of Mg-SINE was observed under most conditions. Our results should help investigate if and how condition-specific expressions of some TEs contribute to the biology and evolution of M. oryzae.

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References

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