The Library
Arsenic shoot-grain relationships in field grown rice cultivars
Tools
Norton, Gareth J, Islam, M. Rafiqul, Duan, Guilan, Lei, Ming, Zhu, Yongguan, Deacon, Claire M, Moran, Annette C, Islam, Shofiqul, Zhao, Fang-Jie, Stroud, Jacqueline L., McGrath, Steve P., Feldmann, Joerg, Price, Adam H and Meharg, Andrew A (2010) Arsenic shoot-grain relationships in field grown rice cultivars. Environmental Science & Technology, 44 (4). pp. 1471-1477. doi:10.1021/es902992d ISSN 0013-936X.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1021/es902992d
Abstract
Arsenic (As) accumulation in rice grains is a risk to human health. The mechanism of transfer of As from the shoot into the grain during grain filling is unknown at present. In this study As speciation in the shoot and grains at maturity were examined, and the relationships between phosphorus (P) and As, and silicon (Si) and As were established in a wide range of cultivars grown in As contaminated field trials in Bangladesh and China. No correlations were observed between shoot and grain speciation, with the inorganic form comprising 93.0−97.0% of As in the shoot and 63.0−83.7% in the grains. The percentage of dimethylarsinic acid (DMA) was between 1.4 and 6.6% in the shoot and 14.6 and 37.0% in the grains; however, the concentrations were comparable, ranging from 0.07 to 0.26 mg kg−1 in the shoots and 0.03 to 0.25 mg kg−1 in the grains. A positive correlation was observed between shoot As and shoot Si, however, no correlation was observed between shoot Si and grain As. A significant negative correlation was observed between shoot P and grain As concentrations. These results suggest that the translocation of As into the grain from the shoots is potentially using P rather than Si transport mechanisms. The findings also indicate that inorganic As and DMA translocation to the grain differ considerably.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
Journal or Publication Title: | Environmental Science & Technology | ||||||||
Publisher: | American Chemical Society | ||||||||
ISSN: | 0013-936X | ||||||||
Official Date: | 15 February 2010 | ||||||||
Dates: |
|
||||||||
Volume: | 44 | ||||||||
Number: | 4 | ||||||||
Page Range: | pp. 1471-1477 | ||||||||
DOI: | 10.1021/es902992d | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |