Document Detail


Cadmium accumulation in and tolerance of rice (Oryza sativa L.) varieties with different rates of radial oxygen loss.
MedLine Citation:
PMID:  21411196     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Cadmium (Cd) uptake and tolerance were investigated among 20 rice cultivars based on a field experiment (1.2 mg Cd kg(-1) in soil) and a soil pot trial (control, 100 mg Cd kg(-1)), and rates of radial oxygen loss (ROL) were measured under a deoxygenated solution. Significant differences were found among the cultivars in: (1) brown rice Cd concentrations (0.11-0.29 mg kg(-1)) in a field soil, (2) grain Cd tolerance (34-113%) and concentrations (2.1-6.5 mg kg(-1)) in a pot trial, and (3) rates of ROL (15-31 mmol O(2) kg(-1) root d.w. h(-1)). Target hazard quotients were calculated for the field experiment to assess potential Cd risk. Significant negative relationships were found between rates of ROL and concentrations of Cd in brown rice or straw under field and greenhouse conditions, indicating that rice cultivars with higher rates of ROL had higher capacities for limiting the transfer of Cd to rice and straw.
Authors:
M Y Wang; A K Chen; M H Wong; R L Qiu; H Cheng; Z H Ye
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-14
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  -     ISSN:  1873-6424     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, PR China.
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