| Project/Area Number |
17K18016
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Stratigraphy/Paleontology
Geochemistry/Cosmochemistry
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| Research Institution | Osaka City University |
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Principal Investigator |
Nakamura Hideto 大阪市立大学, 大学院理学研究科, 特任講師 (00785123)
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 植物バイオマーカー / GC-MS / 化合物ライブラリ / マススペクトル / バイオマーカー / 分子化石 / 堆積物 / 古植生 / テルペノイド / 古植生解析 / 古植生指標 / 白亜紀 / 植物テルペノイド / 質量分析 / 中世代 |
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| Outline of Final Research Achievements |
Towards the high-resolution reconstruction of paleovegetation by molecular fossil analysis, a rapid and comprehensive analysis method of plant molecular fossils were developed. (1) A wide sample set with different ages and maturity was analyzed for its molecular facies, and (2) a new mass spectra library of plant biomarkers were constructed with mass spectrum and retention index obtained in this study. In addition, (3) use of the library with deconvolution software enabled semiautomatic workflow on convenient identification of major plant molecular fossils. Although the detection accuracy of small peaks is not yet up to manual analysis, a rapid assay of molecular facies and provisional calculation of paleovegetation indices have become possible.
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| Academic Significance and Societal Importance of the Research Achievements |
植物分子化石解析による古植生解析のための基盤的な技術を開発した。形態の保存された花粉や植物化石が産出しない層準においても、極微量に含まれる有機分子から古植生情報を得ることができる。本研究で構築した古植生指標の計算に必要な植物有機分子化石のマススペクトルと保持指数を収録したライブラリは、古植生解析のみならず植物分子化石に着目した応用研究に広く活用されると期待される。
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