| Project/Area Number |
23580211
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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 |
Forest science
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
OKU HIROSUKE 琉球大学, 熱帯生物圏研究センター, 教授 (10177165)
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| Co-Investigator(Kenkyū-buntansha) |
IWASAKI Hironori 琉球大学, 熱帯生物圏研究センター, 助教 (50347134)
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| Co-Investigator(Renkei-kenkyūsha) |
MOHAMMAD Basyuni 琉球大学, 外国人客員研究員(北スマトラ大学講師)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | マングローブ / 耐塩性 / トリテルペン / バリアー / 膜脂質 / 膜透過性 / トリテルペノイド / 遺伝子発現 / プロファイリング / プロモーター / マングローブ植物 / 出芽酵母 / 細胞膜 |
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| Research Abstract |
This study examined our postulate that the triterpenoids function against salt stress as a component of membrane lipid. Concentration of triterpenoid in all mangrove species increased with increasing salt concentration irrespective of salt secretor or non-salt secretor, and returned to the initial level after replacement of the salt water with water. Increasing the membrane concentration of triterpenoid in yeast affected its growth rate under salinity condition which directly proved the physiological significance of triterpenoid in salt tolerance. Furthermore, gene expression analysis suggested that the increased triterpenoid represents the long-term salt tolerance mechanism of mangrove in conjunction with the other short-term adaptation system.
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