UM  > 科技學院  > 土木及環境工程系
Differential toxicity and accumulation of inorganic and methylated arsenic in rice
Zheng MZ1,2; Li G1; Sun GX3; Shim H4; Cai C1
2013-04
Source PublicationPlant and Soil
ISSN0032-079X
Volume365Issue:1-2Pages:227-238
Abstract

Background and aims  Efficient accumulation of arsenic (As) in rice (Oryza sativa L.) poses a potential health risk to rice consumers. The aim of this study was to investigate the mechanisms of uptake, transport and distribution of inorganic arsenic (Asi) and dimethylarsinic acid (DMA) in rice plants.

Methods  Rice was exposed to Asi (As(V)) and DMA in hydroponics. High-performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC-ICP-MS) and synchrotron X-ray fluorescence (SXRF) microprobe were used to determine As concentration and the in situ As distribution.

Results  DMA induced abnormal florets before flowering and caused a sharp decline in the seed setting rate after flowering compared to Asi. Rice grains accumulated 2-fold higher DMA than Asi. The distribution of Asi concentration (root > leaf > husk > caryopsis) in As(V) treatments was different from that of the DMA concentration (caryopsis > husk > root ≥ leaf) in DMA treatments. SXRF showed that Asi mainly accumulated in the vascular trace of caryopsis with limited distribution to the endosperm, whereas DMA was observed in both tissues.

Conclusions  DMA tended to accumulate in caryopsis and induced higher toxicity to the reproductive tissues resulting in markedly reduced grain yield, whereas Asi mainly remained in the vegetative tissues and had no significant effect on yield. DMA is more toxic than Asi to the reproductive tissues when both of them are at similar concentrations in nutrient solution. 

KeywordRice Arsenic Dimethylarsinic Acid Hplc-icp-ms Sxrf
DOI10.1007/s11104-012-1376-3
URLView the original
Indexed BySCI
Language英语
WOS Research AreaAgriculture ; Plant Sciences
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000316391400016
Fulltext Access
Citation statistics
Cited Times [WOS]:38   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorCai C
Affiliation1.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China
2.Wuyi Univ, Tea Sci & Biol Dept, Wuyishan 354300, Fujian, Peoples R China
3.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
4.Univ Macau, Taipa, Macau Sar, Peoples R China
Recommended Citation
GB/T 7714
Zheng MZ,Li G,Sun GX,et al. Differential toxicity and accumulation of inorganic and methylated arsenic in rice[J]. Plant and Soil,2013,365(1-2):227-238.
APA Zheng MZ,Li G,Sun GX,Shim H,&Cai C.(2013).Differential toxicity and accumulation of inorganic and methylated arsenic in rice.Plant and Soil,365(1-2),227-238.
MLA Zheng MZ,et al."Differential toxicity and accumulation of inorganic and methylated arsenic in rice".Plant and Soil 365.1-2(2013):227-238.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zheng MZ]'s Articles
[Li G]'s Articles
[Sun GX]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zheng MZ]'s Articles
[Li G]'s Articles
[Sun GX]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zheng MZ]'s Articles
[Li G]'s Articles
[Sun GX]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.