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Application of 42K to Arabidopsis Tissues Using Real-Time Radioisotope Imaging System(RRIS)Application of 42K to Arabidopsis Tissues Using Real-Time Radioisotope Imaging System(RRIS) |
"/ARAMAKI, Toshinori/"ARAMAKI, Toshinori ,
"/SUGITA, Ryohei/"SUGITA, Ryohei ,
"/HIROSE, Atsushi/"HIROSE, Atsushi ,
"/KOBAYASHI, Natsuko I./"KOBAYASHI, Natsuko I. ,
"/TANOI, Keitaro/"TANOI, Keitaro ,
"/NAKANISHI, Tomoko M./"NAKANISHI, Tomoko M.
64
(
3
)
, pp.169
-
176 , 2015-03-28 , Japan Radioisotope Association
内容記述
We performed an imaging analysis of 42K in Arabidopsis using real-time radioisotope imaging system(RRIS). First, we purified 42K from an 42Ar―42K generator. And then, we characterized RRIS performance by quantitatively determining 42K using standard series. As a result, the dynamic range for 42K was determined to be at least three orders of magnitude. Next, we evaluated the level of self-absorption in Arabidopsis organs by comparing the signal intensity detected using RRIS and the actual radioactivity detected by a gamma-counting method. There was no significant difference in detection efficiency between the thick bolt(stem) tissue and the thin leaf tissue. The reason for scarce self-absorption could be related to the relatively strong β ray emissions that have a maximum energy of 3525.4keV.
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