Molecular mechanisms of host range expansions in Ralstonia solanacearum by using large-scale genomic exchange
| Project/Area Number |
24580072
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plant pathology
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| Research Institution | 岡山県農林水産総合センター生物科学研究所 |
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Principal Investigator |
MUKAIHARA Takafumi 岡山県農林水産総合センター生物科学研究所, その他部局等, 研究員 (80344406)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 青枯病 / エフェクター / 抵抗性 / 宿主域 / ナス / 病原性 / 植物 / 台木 / 病原性因子 / エリシター / 宿主域変化 / Hrp |
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| Outline of Final Research Achievements |
Solanum integrifolium and Solanum torvum are useful rootstocks to avoid bacterial wilt of eggplants. In order to know the mechanism of host range expansion in R. solanacearum, we compared type III effector repertoires among R. solanacearum strains with different host ranges. Three effector genes, namely, rip10, rip36 and popP1, were not detected in the group III or group IV strains, which are virulent on S. integrifolium. Mutation analysis revealed that Rip36 is specifically recognized as an avirulence factor by both S. integrifolium and S. torvum. The rip36 mutant of the group II strain, which is avirulent on S. torvum, effectively cause disease in S. integrifolium. However, the rip36 mutant could not cause disease in S. torvum despite the increased multiplication, indicating that another avirulence factor for S. torvum exists in this strain. These findings suggest that the group IV strains are generated from the group III strains by as yet unidentified mutations.
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Report
(4 results)
Research Products
(11 results)
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[Journal Article] Ralstonia solanacearum type III secretion system effector Rip36 induces a hypersensitive response in the nonhost wild eggplant Solanum torvum.2014
Author(s)
Nahar, K., Matsumoto, I., Taguchi, F., Inagaki, Y., Yamamoto, M., Toyoda, K., Shiraishi, T., Ichinose, Y., and Mukaihara T.
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Journal Title
Molecular Plant Pathology
Volume: 15
Issue: 3
Pages: 297-303
DOI
Related Report
Peer Reviewed
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[Presentation] Type III secretion system effectors Rip36 of Ralstonia solanacearum and HopH1 of Pseudomonas syringae induce hypersensitive response in nonhost Solanum torvum.2013
Author(s)
Nahar, K., Taguchi, F., Yamamoto, M., Inagaki, Y., Toyoda, K., Shiraishi, T., Ichinose, Y., and Mukaihara, T.
Organizer
平成25年度日本植物病理学会関西部会
Place of Presentation
岡山大学（岡山県）
Related Report
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