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Yin, Y.-G.*; Suzui, Nobuo*; Kurita, Keisuke; Miyoshi, Yuta*; Unno, Yusuke*; Fujimaki, Shu*; Nakamura, Takuji*; Shinano, Takuro*; Kawachi, Naoki*
Scientific Reports (Internet), 10, p.8446_1 - 8446_11, 2020/06
Times Cited Count：11 Percentile：50.68(Multidisciplinary Sciences)The release of rhizodeposits differs depending on the root position and is closely related to the assimilated carbon (C) supply. Therefore, quantifying the C partitioning over a short period may provide crucial information for clarifying root-soil carbon metabolism. A non-invasive method for visualising the translocation of recently assimilated C into the root system inside the rhizobox was established using 
CO
labelling and the positron-emitting tracer imaging system. The spatial distribution of recent C-photoassimilates translocated and released in the root system and soil were visualised for white lupin (
) and soybean (
). Our method enabled the quantification of the spatial C allocations in roots and soil, which may help to elucidate the relationship between C metabolism and nutrient cycling at specific locations of the root-soil system in response to environmental conditions over relatively short periods.
Terashima, Motoki; Koarai, Kazuma; Yokoyama, Yoshio*; Shima, Nagayoshi*; Unno, Toshimichi*; Kuwata, Haruka*; Matsueda, Makoto; Aoki, Jo*; Watanabe, Yusuke; Misono, Toshiharu; et al.
no journal, ,
It is necessary to evaluate tritium concentration in flatfish after discharge of treated water from the Fukushima Daiichi Nuclear Power Plant and to clarify the actual tritium accumulation in flatfish in the real environment. In this study, we analyzed two types of tritium (tissue free water tritium (TFWT) and organically bound tritium (OBT)) in flatfish in the Fukushima coast before and after discharge of treated water, and compared them with tritium in seawater around flatfish to clarify the actual tritium accumulation in flatfish due to water discharge.
Unno, Motoyoshi; Ebashi, Tsutomu; Kawasaki, Takashi; Tomotsune, Yusuke; Akiyama, Kiyomitsu; Ejiri, Hideo; Kobayashi, Hirohide
no journal, ,
no abstracts in English
Yin, Y.-G.*; Suzui, Nobuo*; Kurita, Keisuke; Miyoshi, Yuta*; Unno, Yusuke*; Fujimaki, Shu*; Nakamura, Takuji*; Shinano, Takuro*; Kawachi, Naoki*
no journal, ,
no abstracts in English
Yin, Y.-G.*; Suzui, Nobuo*; Kurita, Keisuke; Miyoshi, Yuta*; Unno, Yusuke*; Fujimaki, Shu*; Nakamura, Takuji*; Shinano, Takuro*; Kawachi, Naoki*
no journal, ,
In this study, we developed a new method to visualize and evaluate the movement of C-photosynthates into the root system and 11C-rhizodeposits released in the soil coupled with positional information using the positron-emitting tracer imaging system. A newly developed rhizobox was consisted of a square nylon mesh bag containing the root system and a pair of soil boxes, and it could be distinguishing the C signal of soil from that of root. Test plants of white lupin (Lupinus albus) and soybean (Glycine max) were grown in the rhizobox, and fed CO as a pulse. Simultaneously, the behavior of 11C-photosynthates into the root system and the distribution of C-rhizodeposits released in the rhizosphere soil were visualized.
Yin, Y.-G.*; Suzui, Nobuo*; Kurita, Keisuke; Miyoshi, Yuta*; Unno, Yusuke*; Fujimaki, Shu*; Nakamura, Takuji*; Shinano, Takuro*; Kawachi, Naoki*
no journal, ,
no abstracts in English
