Effects of long-term fertilization on the diversity of bacterial mercuric reductase gene in a Chinese upland soil
Yu-Rong Liu, Ji-Zheng He, Li-Mei Zhang, Yuan-Ming Zheng
Journal of Basic Microbiology | WILEY | Published : 2012
Soil mercury (Hg) pollution has received considerable attention due to its neurotoxin effects and its potential risk to food safety. The microbial transformation of Hg plays a key role in reducing Hg toxicity by the mercuric reductase (MerA) conferred by genes arranged in the mer operon. This study investigated the effects of long-term fertilization on the diversity of bacterial mercuric reductase gene (merA), which specify the reduction of ionic Hg²⁺ to the volatile elemental form Hg⁰, in an agricultural soil with relatively high Hg content. The soil samples were collected from different treatments, including control without fertilizer (CK), fertilizer nitrogen (N), combined fertilizers (NP..View full abstract
Awarded by National High Technology Research Program
Awarded by Natural Science Foundation of China
Awarded by Ministry of Environmental Protection of China
This work was supported by the National High Technology Research Program (2009AA06Z402), the Natural Science Foundation of China (40671172 and 50921064), and the Ministry of Environmental Protection of China (201009032 and 20082X07209-006-04). We are grateful to B. R. Wang for assistance in soil sampling.