Water management affects arsenic and cadmium accumulation in different rice cultivars

	Water management affects arsenic and cadmium accumulation in different rice cultivars
	Hu, Pengjie 1; Huang, Jiexue 1; Ouyang, Younan 2; Wu, Longhua 1; Song, Jing 1; Wang, Songfeng 1; Li, Zhu 1,3; Han, Cunliang 1; Zhou, Liqiang 1; Huang, Yujuan 1; Luo, Yongming4 ; Christie, Peter 5
发表期刊	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN	0269-4042
	2013-12-01
卷号	35 期号:6 页码:767-778
关键词	Arsenic Bioavailability Cadmium Rice Cultivars Water Management Food Security
产权排序	[Hu, Pengjie; Huang, Jiexue; Wu, Longhua; Song, Jing; Wang, Songfeng; Li, Zhu; Han, Cunliang; Zhou, Liqiang; Huang, Yujuan] Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China; [Ouyang, Younan] Chinese Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China; [Li, Zhu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Christie, Peter] Agrifood & Biosci Inst, Agrienvironm Branch, Belfast BT9 5PX, Antrim, North Ireland
通讯作者	Wu, LH (reprint author), Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China. [email protected]
英文摘要	Paddy rice (Oryza sativa L.) is a staple food and one of the major sources of dietary arsenic (As) and cadmium (Cd) in Asia. A field experiment was conducted to investigate the effects of four water management regimes (aerobic, intermittent irrigation, conventional irrigation and flooding) on As and Cd accumulation in seven major rice cultivars grown in Zhejiang province, east China. With increasing irrigation from aerobic to flooded conditions, the soil HCl-extractable As concentrations increased significantly and the HCl-extractable Cd concentrations decreased significantly. These trends were consistent with the As and Cd concentrations in the straw, husk and brown rice. Water management both before and after the full tillering stage affected As and Cd accumulation in the grains. The intermittent and conventional treatments produced higher grain yields than the aerobic and flooded treatments. Cd concentrations in brown rice varied 13.1-40.8 times and As varied 1.75-8.80 times among the four water management regimes. Cd and As accumulation in brown rice varied among the rice cultivars, with Guodao 6 (GD6) was a low Cd but high-As-accumulating cultivar while Indonesia (IR) and Yongyou 9 (YY9) were low As but high-Cd-accumulating cultivars. Brown rice Cd and As concentrations in the 7 cultivars were significantly negatively correlated. The results indicate that As and Cd accumulated in rice grains with opposite trends that were influenced by both water management and rice cultivar. Production of 'safe' rice with respect to As and Cd might be possible by balancing water management and rice cultivar according to the severity of soil pollution.; Paddy rice (Oryza sativa L.) is a staple food and one of the major sources of dietary arsenic (As) and cadmium (Cd) in Asia. A field experiment was conducted to investigate the effects of four water management regimes (aerobic, intermittent irrigation, conventional irrigation and flooding) on As and Cd accumulation in seven major rice cultivars grown in Zhejiang province, east China. With increasing irrigation from aerobic to flooded conditions, the soil HCl-extractable As concentrations increased significantly and the HCl-extractable Cd concentrations decreased significantly. These trends were consistent with the As and Cd concentrations in the straw, husk and brown rice. Water management both before and after the full tillering stage affected As and Cd accumulation in the grains. The intermittent and conventional treatments produced higher grain yields than the aerobic and flooded treatments. Cd concentrations in brown rice varied 13.1-40.8 times and As varied 1.75-8.80 times among the four water management regimes. Cd and As accumulation in brown rice varied among the rice cultivars, with Guodao 6 (GD6) was a low Cd but high-As-accumulating cultivar while Indonesia (IR) and Yongyou 9 (YY9) were low As but high-Cd-accumulating cultivars. Brown rice Cd and As concentrations in the 7 cultivars were significantly negatively correlated. The results indicate that As and Cd accumulated in rice grains with opposite trends that were influenced by both water management and rice cultivar. Production of 'safe' rice with respect to As and Cd might be possible by balancing water management and rice cultivar according to the severity of soil pollution.
文章类型	Article
收录类别	SCI
语种	英语
关键词[WOS]	ORYZA-SATIVA L. ; BANGLADESH ; SPECIATION ; GRAINS ; FIELD ; SOIL ; PH ; VARIETIES ; SEEDLINGS ; PLANTS
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
WOS记录号	WOS:000326055000007
引用统计	被引频次：143[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/6934
专题	中国科学院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 5.Agrifood & Biosci Inst, Agrienvironm Branch, Belfast BT9 5PX, Antrim, North Ireland
推荐引用方式 GB/T 7714	Hu, Pengjie,Huang, Jiexue,Ouyang, Younan,et al. Water management affects arsenic and cadmium accumulation in different rice cultivars[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2013,35(6):767-778.
APA	Hu, Pengjie.,Huang, Jiexue.,Ouyang, Younan.,Wu, Longhua.,Song, Jing.,...&Christie, Peter.(2013).Water management affects arsenic and cadmium accumulation in different rice cultivars.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,35(6),767-778.
MLA	Hu, Pengjie,et al."Water management affects arsenic and cadmium accumulation in different rice cultivars".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 35.6(2013):767-778.

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