| Project/Area Number |
15H04506
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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 |
Forest science
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
出川 洋介 筑波大学, 生命環境系, 准教授 (00311431)
細江 智夫 星薬科大学, 薬学部, 教授 (10287849)
石賀 康博 筑波大学, 生命環境系, 助教 (50730256)
岡根 泉 筑波大学, 生命環境系, 准教授 (60260171)
細矢 剛 独立行政法人国立科学博物館, 植物研究部, グループ長 (60392536)
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| Co-Investigator(Renkei-kenkyūsha) |
MASUYA Hayato (独)森林総合研究所, 東北支所, チーム長 (70391183)
ABE Junichi 筑波大学, 生命環境系, 助教 (40292510)
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| Research Collaborator |
TAMAI Yutaka 北海道大学, (連合)農学研究科, 准教授 (50281796)
YAMAGUCHI Takehiro (独)森林総合研究所, 北海道支所, チーム長 (00353897)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2016: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2015: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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| Keywords | 菌類 / 植物病理学 / 樹病学 / 分類学 / 内生菌 / 生活環 / 侵略的外来種 / 病理学 / 林学 |
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| Outline of Final Research Achievements |
Hymenoscyphus fraxineus causeing a lethal disease known as ‘ash dieback’ of Fraxinus excelsior in Europe is considered to be originated from East Asia. In Japan, this fungus produces apothecia on decomposing leaves of manshurian ash, F. mandshurica from middle July to early September. Results of detection of the fungus from periodically collected leaves of F. mandshurica by real-time PCR assays using species specific primers revealed that after infected the living leaves of by ascospores, H. fraxineus endophytically inhabited in them until defoliation. This fungus was also able to infect other Fraxinus species, including F. excelsior, F. pennsylvanica, and F. augustifolia, but no serious damages like ash dieback were observed in these ashes except for one population of F. pennsylvanica in Hokkaido. Some resistant reactions controlling movement of the fungus into stem tissues and/or environmental factor like overwinter condition might affect on symptom development.
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