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学科主题: Agriculture ; Plant Sciences
题名: Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?
作者: Cheng, H ; Wang, MY ; Wong, MH ; Ye, ZH
通讯作者: chenghao@scsio.ac.cn ; morywang@126.com ; mhwong@hkbu.edu.hk ; lssyzhh@mail.sysu.edu.cn
关键词: Cadmium ; Iron plaque ; Lead ; Radial oxygen loss ; Rice
刊名: PLANT AND SOIL
发表日期: 2014
卷: 375, 期:41641, 页:137-148
收录类别: sci
部门归属: [Cheng, Hao ; Wang, Maoyi ; Ye, Zhihong] Sun Yat Sen Univ, Key Lab Biodivers Dynam & Conservat, Guangdong Higher Educ Inst, Sch Life Sci, Guangzhou 510006, Guangdong, Peoples R China ; [Cheng, Hao] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China ; [Cheng, Hao] Chinese Acad Sci, South China Sea Inst Oceanol, Daya Bay Marine Biol Res Stn, Guangzhou 510301, Guangdong, Peoples R China ; [Wong, Ming Hung] Hong Kong Baptist Univ, Croucher Inst Environm Sci, Hong Kong, Hong Kong, Peoples R China
项目归属: LTO
资助者: National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009]
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.
原文出处: 查看原文
WOS记录号: WOS:000331204500011
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10575
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
Cheng, H; Wang, MY; Wong, MH; Ye, ZH.Does radial oxygen loss and iron plaque formation on roots alter Cd and Pb uptake and distribution in rice plant tissues?,PLANT AND SOIL,2014,375(41641):137-148
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