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Keywords = radiocesium movement

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8 pages, 1641 KB  
Article
Intake of Radionuclides in the Trees of Fukushima Forests 2. Study of Radiocesium Flow to Poplar Seedlings as a Model Tree
by Shoko Aoki, Miki Nonaka, Chisato Yasukawa, Masateru Itakura, Masaharu Tsubokura, Kei’ichi Baba, Hiroya Ohbayashi, Tomoko Seyama, Iwao Uehara, Rumi Kaida, Teruaki Taji, Yoichi Sakata and Takahisa Hayashi
Forests 2019, 10(9), 736; https://doi.org/10.3390/f10090736 - 27 Aug 2019
Cited by 3 | Viewed by 2833
Abstract
After the nuclear power plant accident in Fukushima, radionuclides were deposited over a large area of local forest. However, almost nothing is known about radionuclide infiltration into trees. Here, we used poplar seedlings as a model to show that radiocesium can enter directly [...] Read more.
After the nuclear power plant accident in Fukushima, radionuclides were deposited over a large area of local forest. However, almost nothing is known about radionuclide infiltration into trees. Here, we used poplar seedlings as a model to show that radiocesium can enter directly into leaves and bark, moving via ray cells through the symplastic pathways to the xylem and concentrating around the meristems, cork, and vascular cambium. During induced potassium incorporation and reduced seasonal growth, the radiocesium in the meristems of stems mainly passes into abscission tissues such as leaves and heartwood. There is no turnover of radiocesium after it enters the heartwood. Full article
(This article belongs to the Section Forest Ecophysiology and Biology)
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