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Citation
Tags
HERO ID
922774
Reference Type
Journal Article
Title
Total grain-arsenic and arsenic-species concentrations in diverse rice cultivars under flooded conditions
Author(s)
Pillai, TR; Yan, W; Agrama, HA; James, WD; Ibrahim, AMH; Mcclung, AM; Gentry, TJ; Loeppert, RH
Year
2010
Is Peer Reviewed?
Yes
Journal
Crop Science
ISSN:
0011-183X
EISSN:
1435-0653
Publisher
Crop Science Society of America, 677 S. Segoe Rd. Madison WI 53711 USA
Volume
50
Issue
5
Page Numbers
2065-2075
DOI
10.2135/cropsci2009.10.0568
Web of Science Id
WOS:000281060300054
URL
https://www.crops.org/publications/cs/abstracts/50/5/2065
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Abstract
Arsenic (As) is not an essential element and can be toxic to both plants and animals. Low As concentrations in all foodstuffs, including rice grain, is a desirable goal because of the potential detrimental impacts of As on plant growth and yield and its potential toxicity to humans. Twenty-five diverse rice (Oryza sativa L.) cultivars, including both indica and japonica subspecies, were grown over a 3-yr period (2004, 2005, and 2007) on a moderate As-concentration, paddy soil (Dewitt silt loam, fine, smectitic, thermic Typic Albaqualf) under continuously flooded field conditions. The total grain-As [TGAs; HNO3/H2O2 digestion and analysis by inductively-coupled-plasma mass-spectroscopy (ICP–MS)] and As-species [trifluoroacetic acid (TFA) extraction and analysis by high performance liquid chromatography (HPLC) coupled with ICP–MS] concentrations and their relationships with plant-growth parameters (e.g., heading date and yield) were assessed. The only As species detected in milled (polished) rice grain were inorganic AsIII (arsenite) (iAsIII) and dimethylarsinic acid (with pentavalent As) (DMAsV). Total grain-As (TGAs) and As-species concentrations, as well as iAsIII/TGAs ratio, each varied widely between cultivars. Arsenic concentration and speciation were mostly dependent on genotype (G), but there were also significant genotype by year (G × Y) and year (Y) effects that were likely impacted by annual differences in environmental conditions, such as temperature, and local soil characteristics. This study indicates the significant potential for lowering rice-grain As concentration through genotype selection and plant breeding.
Keywords
Plant extracts; Environmental conditions; Digestion; Soil temperature; Food; Oryza sativa; Soil characteristics; Plant breeding; High-performance liquid chromatography; Crops; Trifluoroacetic acid; Arsenite; Grain; Hydrogen peroxide; Soils (loam); Speciation; dimethylarsinic acid; Arsenic; Toxicity; Genotypes; Rice fields
Tags
•
Arsenic Hazard ID
1. Initial Lit Search
WOS
4. Considered through Oct 2015
6. Cluster Filter through Oct 2015
Not Relevant
•
Arsenic (Inorganic)
1. Literature
Web of Science
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