Development of physiological model for cesium uptake by plant root

• Project/Area Number: 26850040
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plant nutrition/Soil science
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: FUJIMURA Shigeto 国立研究開発法人農業・食品産業技術総合研究機構, 東北農業研究センター農業放射線研究センター, 主任研究員 (70560639)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: セシウム / カリウム / 水稲 / モデル / 吸収 / イネ

Outline of Final Research Achievements

The objective of this study was to understand the interaction between potassium and cesium on cesium uptake by crop root. Potassium and cesium uptake rates were measured for rice exposed to three levels of potassium concentrations for 24 hours in hydroponic culture experiment. The potassium concentrations were in the range of observed value in paddy fields. Potassium uptake rate was higher in the low potassium concentration than in the high potassium concentration while significant effect of potassium concentrations was not observed on the cesium uptake rate. The results indicated that potassium concentration around root affected potassium uptake after the exposure.

Research Products

• [Presentation] 北陸193号とコシヒカリの放射性セシウム吸収の比較 (2015)
  • Author(s): 藤村恵人・石川哲也・松波寿弥・高橋義彦・太田健・信濃卓郎
  • Organizer: 日本作物学会東北支部会第58回講演会
  • Place of Presentation: 岩手大学（岩手県・盛岡市）
  • Year and Date: 2015-08-20