title: Arsenic accumulation and phosphorus status in two rice (Oryza sativa L.) cultivars surveyed from fields in South China.
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.
authors.affiliation: College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Lu
authors.forename: Fei
authors.initials: F
authors.lastname: Dong
authors.forename: Claire
authors.initials: C
authors.lastname: Deacon
authors.forename: Huo-Jun
authors.initials: HJ
authors.lastname: Chen
authors.forename: Andrea
authors.initials: A
authors.lastname: Raab
authors.forename: Andrew A
authors.initials: AA
authors.lastname: Meharg
mesh_terms: D001151:Arsenic / Q000032:analysis / Q000378:metabolism*; D002681:China; D003257:Consumer Product Safety; D005506:Food Contamination / Q000032:analysis*; D012275:Oryza / Q000737:chemistry* / Q000378:metabolism*; D010758:Phosphorus / Q000032:analysis / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism
chemical_list: D012989:Soil Pollutants; D010758:Phosphorus; D001151:Arsenic