Microbial Arsenic Methylation and Microbial Reduction of Dimethylarsenate Contribute to the Production of Highly Toxic Dimethylarsenite in Paddy Soil.

Dimethylarsenic (DMAs) is a causal agent of rice straighthead disease, a physiological disorder resulting in severe yield losses. Both pentavalent [DMAs(V)] and trivalent [DMAs(III)] forms of DMAs have been detected in anoxic paddy soils. However, th…

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