Fundamental study on absorption of radiocesium in soybean

2016 Fiscal Year Final Research Report

• Project/Area Number: 26511006
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 復興農学
• Research Institution: The University of Tokyo
• Principal Investigator: Nihei Naoto 東京大学, 大学院農学生命科学研究科(農学部), 准教授 (50504065)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ダイズ / 放射性セシウム

Outline of Final Research Achievements

Several experiments were conducted to elucidate the mechanism of RCs absorption by soybean.
RCs absorption by soybean was increased in high K concentration solution than in low K solution. Therefore, K was considered to be involved in RCs absorption. In order to search for specific genes involved in RCs absorption, QTL analysis was performed using RIL (recombinant inbred line). Several areas related to RCs absorption have been revealed. The concentration distributions of RCs in soybean seeds were analyzed. The results show that RCs was uniformly distributed in the soybean seeds, as was K, both of which likely accumulated in the cotyledon. In addition, approximately 40% of absorbed RCs accumulated in the soybean seeds. It has been suggested that soybean seeds have a large capacity for RCs accumulation, and this is one of the reasons why the concentrations of RCs in soybeans are higher than that in other crops.

Free Research Field

放射線環境工学