Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?
	Cheng, H ; Wang, MY ; Wong, MH ; Ye, ZH
刊名	PLANT AND SOIL
	2014
卷号	375 期号:41641 页码:137-148
关键词	Cadmium Iron plaque Lead Radial oxygen loss Rice
ISSN号	0032-079X
通讯作者	chenghao@scsio.ac.cn ; morywang@126.com ; mhwong@hkbu.edu.hk ; lssyzhh@mail.sysu.edu.cn
中文摘要	Metal (e.g. Cd and Pb) pollution in agricultural soils and crops have aroused considerable attention in recent years. This study aimed to evaluate the effects of ROL and Fe plaque on Cd and Pb accumulation and distribution in the rice plant. A rhizobag experiment was employed to investigate the correlations among radial oxygen loss (ROL), Fe plaque formation and uptake and distribution of Cd and Pb in 25 rice cultivars. Large differences between the cultivars were found in rates of ROL (1.55 to 6.88 mmol O-2 kg(-1) root d.w. h(-1)), Fe plaque formation (Fe: 6,117-48,167 mg kg(-1); Mn: 127-1,089 mg kg(-1)), heavy metals in shoot (Cd: 0.13-0.35 mg kg(-1); Pb: 4.8-8.1 mg kg(-1)) and root tissues (Cd: 1.1-3.5 mg kg(-1); Pb: 45-199 mg kg(-1)), and in Fe plaque (Cd: 0.54-2.6 mg kg(-1); Pb: 102-708 mg kg(-1)). Rates of ROL were positively correlated with Fe plaque formation and metal deposition on root surfaces, but negatively correlated with metal transfer factors of root/plaque and distributions in shoot and root tissues. ROL-induced Fe plaque promotes metal deposition on to root surfaces, leading to a limitation of Cd and Pb transfer and distribution in rice plant tissues.
学科主题	Agriculture ; Plant Sciences
收录类别	SCI
资助信息	National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009]
原文出处	SPRINGER
WOS记录号	WOS:000331204500011
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10575]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Cheng, H,Wang, MY,Wong, MH,et al. Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?[J]. PLANT AND SOIL,2014,375(41641):137-148.
APA	Cheng, H,Wang, MY,Wong, MH,&Ye, ZH.(2014).Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?.PLANT AND SOIL,375(41641),137-148.
MLA	Cheng, H,et al."Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?".PLANT AND SOIL 375.41641(2014):137-148.