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Phytoextraction by a high-Cd-accumulating rice: Reduction of Cd content of soybean seeds
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷: 42 期: 16 页: 6167-6172 出版年: AUG 15 2008

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ArticlePhytoextraction by a High-Cd-Accumulating Rice: Reduction of Cd Content of Soybean Seeds
AbstractFull Text HTMLHi-Res PDF[831 KB]PDF w/ Links[231 KB]Supporting InfoMasaharu Murakami*†, Noriharu Ae†, Satoru Ishikawa†, Toshiyuki Ibaraki‡ and Masashi Ito§
Soil Environment Division, National Institute for Agro-Environmental Sciences, 3-1-3, Kannondai, Tsukuba, Ibaraki 305-8604, Japan, Department of Soil and Environment, Fukuoka Agricultural Research Center, 587, Yoshigi, Chikushino, Fukuoka 818-8549, Japan, and Department of Production and Environment, Agricultural Experiment Station, Akita Prefectural Agriculture, Forestry and Fisheries Research Center, Genpachisawa 34-1, Yuwaaikawa, Akita, Akita 010-1231, Japan
Environ. Sci. Technol., 2008, 42 (16), pp 6167–6172
DOI: 10.1021/es8001597
Publication Date (Web): July 3, 2008
Copyright © 2008 American Chemical Society
* Corresponding author phone and fax: +81-29-838-8313; e-mail: simple@affrc.go.jp., † National Institute for Agro-Environmental Sciences.
, Present address: Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo 657-8501, Japan.
, ‡ Fukuoka Agricultural Research Center.
, § Akita Prefectural Agriculture, Forestry and Fisheries Research Center.

AbstractSoybeans (Glycine max (L.) Merr.) are the major summer crop grown in Japanese upland fields (characterized by aerobic soil) that have been converted from paddies. To evaluate the effect of phytoextraction by rice on the seed cadmium (Cd) content of soybeans grown subsequently, we grew Milyang 23, a high-Cd-accumulating rice cultivar, and then grew soybeans in three paddy soils contaminated with moderate Cd concentrations (2.50−4.27 mg Cd kg−1). The rice accumulated 7−14% of the total soil Cd in its shoots. The soybean seed Cd contents were 24−46% less than those grown on control soils. Phytoextraction by Milyang 23 rice is thus a promising remediation method for reducing seed Cd contents of soybeans grown on paddy soils under aerobic soil conditions.

http://pubs.acs.org/doi/abs/10.1021/es8001597