Linkage between community diversity of sulfate-reducing microorganisms and methylmercury concentration in paddy soil
Yu-Rong Liu, Yuan-Ming Zheng, Li-Mei Zhang, Ji-Zheng He
Environmental Science and Pollution Research | SPRINGER HEIDELBERG | Published : 2014
Sulfate-reducing microorganisms (SRM) have been thought to play a key role in mercury (Hg) methylation in anoxic environments. The current study examined the linkage between SRM abundance and diversity and contents of methylmercury (MeHg) in paddy soils collected from a historical Hg mining area in China. Soil profile samples were collected from four sites over a distance gradient downstream the Hg mining operation. Results showed that MeHg content in the soil of each site significantly decreased with the extending distance away from Hg mine. Soil MeHg content was correlated positively with abundance of SRM and the contents of organic matter (OM), NH4(+), SO4(2-), and Hg. The abundances of S..View full abstract
Awarded by National Natural Science Foundation of China
This work was supported by the National Natural Science Foundation of China (41201523, 41090281). We would like to thank Professor Peter Mather for improving English and Mr. Shi Xingwang for assistance in soil sampling.