The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Loss-of-function and Gain-of-function Rice Mutants from Gamma-Ray Mutagenesis

  • Lee, Seon-Woo (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Park, Gyung-Ja (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Kim, Jin-Cheol (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Kim, Heung-Tae (Department of Agricultural Biology, Chungbuk National University) ;
  • Park, Yong-Ho (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Cho, Kwang-Yun (Biological Function Research Team, Korea Research Institute of Chemical Technology)
  • Published : 2003.12.01
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Abstract

Gamma-ray irradiation is known to induce various mutations in plants caused by chromosome alterations. This study investigated disease responses of selected gamma-ray induced rice mutants generated from seven Japonica-type rice cultivars against three plant diseases. Among the tested 22 mutants, three gain-of-function mutants and six loss-of-function mutants against rice blast were obtained, as well as three loss-of-function mutants against bacterial leaf blight (BLB). Two of the loss-of-function mutants were susceptible to both rice blast and BLB. Gain-of-function mutation has not been frequently observed in rice plants, thus, the mutants can be used to identify loci of novel genes for the regulation of disease resistant response.

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References

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