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- Title
Intake of Radionuclides in the Trees of Fukushima Forests 2. Study of Radiocesium Flow to Poplar Seedlings as a Model Tree †.
- Authors
Aoki, Shoko; Nonaka, Miki; Yasukawa, Chisato; Itakura, Masateru; Tsubokura, Masaharu; Baba, Kei'ichi; Ohbayashi, Hiroya; Seyama, Tomoko; Uehara, Iwao; Kaida, Rumi; Taji, Teruaki; Sakata, Yoichi; Hayashi, Takahisa
- 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 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.
- Subjects
RADIOISOTOPES; TREE seedlings; POPLARS; NUCLEAR power plants; TREES; SEEDLINGS; MERISTEMS
- Publication
Forests (19994907), 2019, Vol 10, Issue 9, p736
- ISSN
1999-4907
- Publication type
Article
- DOI
10.3390/f10090736