Metal accumulation mechanism of Araliaceae plants and their application for phytoremediation of radioactive Sr.

2014 Fiscal Year Final Research Report

• Project/Area Number: 24380038
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Plant nutrition/Soil science
• Research Institution: Mie University
• Principal Investigator: MIZUNO Takafumi 三重大学, 生物資源学研究科, 准教授 (50346003)
• Co-Investigator(Kenkyū-buntansha): TAKENAKA Chisato 名古屋大学, 大学院生命農学研究科, 教授 (40240808) ; HARADA Emiko 滋賀県立大学, 環境科学部, 准教授 (20232845) ; TOMIOKA Rie 名古屋大学, 大学院生命農学研究科, 助教 (40456588)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: コシアブラ / 土壌浄化 / 放射性ストロンチウム / ヤナギ / タカノツメ / 放射性セシウム

Outline of Final Research Achievements

Non-radioactive Sr concentration in Chengiopanax sciadophylloides in field showed a correlation with those of Mn and Ca. With SEM－EDX observation we could find crystal compounds that contain Ca and Sr in the bark of Salix sp, Chengiopanax sciadophylloides and Eleutherococcus innovan, suggesting that Sr absorbed in trees stored in crystalized materials and stored for long period. We also identified several genes including Ca-conjugated protein as genes related for Sr accumulation in trees. Roots with higher 137Cs had higher colonization rate of AM fungi in the Chengiopanax sciadophylloides rhizosphere.

Free Research Field

植物栄養学・土壌学・生態学