Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.)

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.)
	Hu Ying; Liu Yunxia; Huang Yizong
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2009
卷号	21 期号:5 页码:647-653
关键词	Cu Cd Combined Contamination Soil Uptake Accumulation Root Surface Iron Plaques
英文摘要	Accumulations of copper (Cu) and cadmium (Cd) in six rice cultivars (94D-22,94D-54, 94D-64, Gui630, YY-1, and KY1360) were evaluated through exposure to heavy metal contamination (100 mg/kg Cu, 1.0 mg/kg Cd, and 100 mg/kg Cu + 1.0 mg/kg Cd) in a greenhouse. The dry weights of shoot and root, concentrations of Cu and Cd in plant tissues and the Cu, Cd, P, Fe concentrations in the root surface iron plaques were analyzed eight weeks later after treatment. The results indicated that the plant biomass was mainly determined by rice genotypes, not Cu and Cd content in soil. Separated treatment with Cu/Cd increased each metal level in shoot, root and iron plaques. Soil Cu enhanced Cd accumulation in tissues. In contrast, Cu concentrations in shoot and root was unaffected by soil Cd. Compared to single metal contamination, combined treatment increased Cd content by 110.6%, 77.0%, and 45.2% in shoot, and by 112.7%, 51.2% and 18.4% in root for Gui630, YY-1, and KY1360, respectively. The content level of Cu or Cd in root surface iron plaques was not affected by their soil content. Cu promoted Fe accumulation in iron plaques, while Cd has no effect on P and Fe accumulation in it. The translocation of Cu and Cd from iron plaques to root and shoot was also discussed. These results might be beneficial in selecting cultivars with low heavy metal accumulation and designing strategies for soil bioremediation.
WOS记录号	WOS:000266020800013
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21780]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Hu Ying,Liu Yunxia,Huang Yizong. Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.)[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2009,21(5):647-653.
APA	Hu Ying,Liu Yunxia,&Huang Yizong.(2009).Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.).JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,21(5),647-653.
MLA	Hu Ying,et al."Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.)".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 21.5(2009):647-653.