2012 Fiscal Year Final Research Report
Functional analysis on endogenous pararetrovirus in rice genome-relationship with rice tungro disease-
| Project/Area Number |
22380001
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Breeding science
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| Research Institution | Hokkaido University |
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Principal Investigator |
KISHIMA Yuji 北海道大学, 大学院・農学研究院, 教授 (60192556)
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| Co-Investigator(Renkei-kenkyūsha) |
KOYANAGI Kanako 北海道大学, 大学院・情報科学研究科, 准教授 (20362840)
YASUI Hideshi 九州大学, 大学院・農学研究院, 准教授 (70220142)
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| Project Period (FY) |
2010 – 2012
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| Keywords | イネ / ゲノム科学 / 耐病性 |
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| Research Abstract |
We have addressed two questions as to endogenous RTBV; theinsertion mechanism of ERTBV into rice genome and the relationship between ERTBVand RTBV resistance. ERTBVs are preferentially present in AT-rich repeats in ricegenome, and we described that AT-rich repeats have integrated chromosomal andepisomal DNAs, which would have been suspended in the nucleus. We also identified atolerance allele against RTBV, qTDR5, located on chromosome 5 by the genetic analysesusing the progenies between an African rice strain Oryza glaberrima WK18 and a japonicarice strain Taichung 65. The region in qTDR5 contains an ERTBV sequence.
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