Phytoextraction by a High-Cd-Accumulating Rice: Reduction of Cd Content of Soybean Seeds

Autor:	Toshiyuki Ibaraki, Masashi Ito, Masaharu Murakami, Noriharu Ae, Satoru Ishikawa
Rok vydání:	2008
Předmět:	Cadmium fungi food and beverages chemistry.chemical_element Oryza General Chemistry Plant Roots Soil contamination Crop Soil Phytoremediation Biodegradation Environmental Bioremediation Agronomy chemistry Seeds Soil water Shoot Soil Pollutants Environmental Chemistry Soybeans Cultivar Plant Shoots
Zdroj:	Environmental Science & Technology. 42:6167-6172
ISSN:	1520-5851 0013-936X
DOI:	10.1021/es8001597
Popis:	Soybeans (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.
Databáze:	OpenAIRE
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