| Project/Area Number |
22580095
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied microbiology
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| Research Institution | Kagawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Naotaka 香川大学, 農学部, 准教授 (60324109)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 病原菌エフェクター / 酵母 / ジェネティックアレイ / III型分泌装置 / 遺伝的相互作用 / 網羅的 / 酵母ジェネティックアレイ / 青枯病 |
|---|
| Research Abstract |
Numerous bacterial pathogens of plants and animals utilize specialized secretion apparatus such as the type III secretion system to inject effector proteins directly into the host cell cytoplasm. Consequently, translocated effector proteins manipulate host cellular processes to promote infection and ultimately cause disease. In this study, we aimed to analyze the pathogen effectors from the plant pathogenic bacteria, Ralstonia solanacearum using yeast expression system and reveal the molecular mechanism of the strategy for R. solanacearum infection. Through the screening of 38 effectors from R. solanacearum GMI1000, we identified 5 effectors that caused sever growth inhibition to yeast cells. One of these effectors, REY4 protein, which has a domain conserved across phyla, was analyzed by the yeast genetic array system to identify the cellular target(s)in yeast. This screening identified that mutants having defect in the cell wall integrity MAP kinase cascade are hyper-sensitive to REY4-expression compared to wild-type cells. This result suggests that REY4 inhibits the pathway(s), which genetically interacts with the cell wall integrity MAP kinase cascade.
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