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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; chenghao@scsio.ac.cn; morywang@126.com; mhwong@hkbu.edu.hk; lssyzhh@mail.sysu.edu.cn
2014
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume375Issue:41641Pages:137-148
AbstractMetal (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.
Department[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
KeywordCadmium Iron Plaque Lead Radial Oxygen Loss Rice
Subject AreaAgriculture ; Plant Sciences
Funding OrganizationNational Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009] ; National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009] ; National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009] ; National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009]
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Indexed Bysci
Funding ProjectLTO
Funding OrganizationNational Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009] ; National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009] ; National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009] ; National Natural Science Foundation of China [30770417, 41106103]; 863 project [2012AA061510, 2013AA062609]; Research Grant Council of Hong Kong [HKBU-262009]
WOS IDWOS:000331204500011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10575
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorchenghao@scsio.ac.cn; morywang@126.com; mhwong@hkbu.edu.hk; lssyzhh@mail.sysu.edu.cn
Recommended Citation
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.,chenghao@scsio.ac.cn.,...&lssyzhh@mail.sysu.edu.cn.(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.
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