The analysis of minor element dynamics in rice with high-resolution / high-sensitivity imaging technique

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18657
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plant nutrition/Soil science
• Research Institution: The University of Tokyo
• Principal Investigator: Hirose Atsushi 東京大学, 大学院農学生命科学研究科(農学部), 特任講師 (90708372)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: カドミウム / アイソトープ / 重金属 / イネ / トレーサー

Outline of Final Research Achievements

In this research, it was aimed to visualize the three-dimensional distribution of the heavy metal and small amount indispensable element in rice grain comprehensively by combining serial freeze-sectioning with radioisotope radiotracer technique.
The dynamics of elements inside rice grain from bloom to grain mature was visualized. Cadmium and zinc were piled up on an albumen central part with high concentration in growth of grain seed to full of nutrition middle term together, but zinc concentration fell in a ripening stage. On the other hand, cadmium stays behind in the albumen. In addition to these 2 elements, analyzing protocols were established about sugar, iron, manganese, lead, cobalt and nickel, and in-depth analysis is advancing.

Free Research Field

放射線植物生理学