Arsenic accumulation and phosphorus status in two rice (Oryza sativa L.) cultivars surveyed from fields in South China

Ying Lu, Fei Dong, Claire Deacon, Huo-jun Chen, Andrea Raab, Andrew A. Meharg

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The consumption of paddy rice (Oryza sativa L) is a major inorganic arsenic exposure pathway in S.E. Asia. A multi-location survey was undertaken in Guangdong Province, South China to assess arsenic accumulation and speciation in 2 rice cultivars, one an Indica and the other a hybrid Indica. The results showed that arsenic concentrations in rice tissue increased in the order grain < husk < straw < root. Rice grain arsenic content of 2 rice cultivars was significant different and correlated with phosphorus concentration and molar ratio of P/As in shoot, being higher for the Indica cultivar than for the hybrid Indica, which suggests altering shoot phosphorus status as a promising route for breeding rice cultivars with reduced grain arsenic. Speciation of grain arsenic, performed using HPLC-ICP-MS, identified inorganic arsenic as the dominant arsenic species present in the rice grain. (C) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1536-1541
Number of pages6
JournalEnvironmental Pollution
Volume158
Issue number5
Early online date4 Jan 2010
DOIs
Publication statusPublished - May 2010

Keywords

  • arsenic
  • China
  • grain
  • phophorus
  • rice
  • paddy rice
  • risk-assessment
  • human health
  • soil
  • speciation
  • plants
  • seedlings
  • toxicity
  • contamination

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