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Cesium uptake and translocation from tea cutting roots (Camellia sinensis L.)
Journal of Environmental Radioactivity ( IF 1.9 ) Pub Date : 2021-05-24 , DOI: 10.1016/j.jenvrad.2021.106655
Hiroto Yamashita , Yoshifumi Nishina , Naho Komori , Mizuho Kamoshita , Yasuhisa Oya , Kenji Okuno , Akio Morita , Takashi Ikka

To estimate the uptake of radiocesium (137Cs) by tea plant roots, 1-year-old rooted tea cuttings (Camellia sinensis L. cv. Yabukita) at the time of bud opening were cultivated hydroponically for 27 days in pots containing nutrient solutions with or without 137CsCl (600 Bq mL−1). Total 137Cs radioactivity of whole tea plants were 6.1 kBq g−1 dry weight. The plant/solution 137Cs transfer factors of different tissues were in the range of 2.6 (in mature leaves) to 28.2 mL g−1 dry weight (in roots), which were lower than those reported in wheat and spinach. In total, 69% of 137Cs remained in roots and 31% was transported from roots to shoots. The results indicated that 137Cs was preferentially translocated to new shoots, which are used for manufacturing tea, over mature leaves.



中文翻译:

茶树根(山茶)对铯的吸收和转运

为了估算茶树根部对放射性铯(137 Cs)的吸收,将一岁的生根茶渣(Camellia sinensis L. cv。Yabukita)在芽开放时在装有营养液的盆中水培27天。或没有137 CsCl(600 Bq mL -1)。整个茶树的总137 Cs放射性为6.1 kBq g -1干重。不同组织的植物/溶液137 Cs传递因子在2.6(成熟叶中)至28.2 mL g -1干重(根中)的范围内,低于小麦和菠菜中报道的那些。总共137个中的69%Cs留在根中,有31%从根转移到芽。结果表明,与成熟叶片相比,137 Cs优先转移到用于生产茶的新芽上。

更新日期:2021-05-24
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