Can MoCV1A-infection trigger to change the pathogenic races of the rice blast fungus?

2016 Fiscal Year Final Research Report

• Project/Area Number: 26660033
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Plant protection science
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: TERAOKA Tohru 東京農工大学, (連合)農学研究科(研究院), 名誉教授 (60163903)
• Research Collaborator: MORIYAMA Hiromitsu ; URAYAMA Shyun-ichi ; KOMATSU Ken
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: イネいもち病 / マイコウイルス / 病原性レース / エピジェネティック変異 / MoCV1A / MoV2 / one-step RT-PCR / RT-LAMP

Outline of Final Research Achievements

The inoculation tests of the MoCV1A-infected or -free rice blast fungus to the isogenic rice lines to differentiate the pathogenic races suggest that the MoCV1A-infection can trigger to suppress the growth of the rice blast fungus and also to change epigenetically the pathogenic races of the fungus to specific rice lines. The expression of the Avr-Pik, one of the avirulence genes, was affected by the MoCV1A-infection in real-time PCR analysis. The application of the conventional detection method and newly-developed simple methods of MoCV1A to stock cultures and newly-isolated cultures reveals that the MoCV1A has distributed in almost all area of Japan since some ten years ago, and the viruses are closely related with the original one in the genomic levels.

Free Research Field

植物病理学