Microbial Arsenic Methylation in Soil and Rice Rhizosphere

• Published in: Environmental science & technology Vol. 47; no. 7; pp. 3141 - 3148
• Main Authors: Jia, Yan, Huang, Hai, Zhong, Min, Wang, Feng-Hua, Zhang, Li-Mei, Zhu, Yong-Guan
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 02.04.2013
• Subjects: Agronomy. Soil science and plant productions; Arsenic; Arsenic - metabolism; Arsenic content; arsenites; Bacteria - genetics; Bacteria - metabolism; Base Sequence; Biodiversity; Biological and medical sciences; DNA Primers - metabolism; essential amino acids; Food toxicology; Fundamental and applied biological sciences. Psychology; Gene Dosage - genetics; Genes; Genes, Bacterial - genetics; horizontal gene transfer; Medical sciences; Methylation; methyltransferases; microorganisms; Nonnative species; Oryza - metabolism; Oryza - microbiology; paddy soils; Phylogeny; Plant Roots - microbiology; Polymorphism; restriction fragment length polymorphism; Rhizosphere; Rice; roots; S-adenosylmethionine; Soil - chemistry; Soil and water pollution; Soil Microbiology; Soil science; soil solution; Soils; Solutions; Toxicology; Microbial activity; Monocotyledones; Arsenic; Pollutant behavior; Cereal crop; Trace element; Carcinogen; Oryza sativa; Rhizosphere; Soils; Gramineae; Biotransformation; Angiospermae; Poison; Spermatophyta; Methylation; Food; Chemical contamination; Rice

Methylated arsenic (As) species are a common constituent of rice grains accounting for 10–90% of the total As. Recent studies have shown that higher plants are unlikely to methylate As in vivo suggesting that As methylation is a microbial mediated process that occurs in soils prior to plant uptake....