The microbial community structure and enzyme activities of seven paddy soils with different Cu concentrations were investigated in the vicinity of a Cu smelter in Fuyang County, Zhejiang Province in Southeast China. T...The microbial community structure and enzyme activities of seven paddy soils with different Cu concentrations were investigated in the vicinity of a Cu smelter in Fuyang County, Zhejiang Province in Southeast China. The microbial community structure was analyzed using the phospholipid fatty acid （PLFA） and multiplex-terminal restriction fragment length polymorphism （M-TRFLP） techniques. There was no clear dose-response relationship between Cu pollution and soil enzyme activity except for urease. Both PLFA and M-TRFLP methods showed that Cu contamination had a large effect on the soil microbial community structure. PLFA indicators of Gram-positive bacteria （16：0i, 15：0i） and fungi （18：2w6,9） relatively decreased with increasing Cu concentration, whereas indicators of Gram-negative bacteria （19：0cy, 16：1w7） increased. The M-TRFLP results suggested that there was a dose-dependent response between Cu pollution and bacterial community or fungal community. The fungal community was more sensitive to Cu pollution than the bacterial community. Therewere no significant differences in archaeal community structure between the different Cu pollution plots and axchaea might be more tolerant to Cu pollution than both bacteria and fungi.展开更多
基金Supported by the Fundamental Research Funds for the Central Universities of Chinathe Zhejiang Provincial Natural Science Foundation of China (No. Y3080145)
文摘The microbial community structure and enzyme activities of seven paddy soils with different Cu concentrations were investigated in the vicinity of a Cu smelter in Fuyang County, Zhejiang Province in Southeast China. The microbial community structure was analyzed using the phospholipid fatty acid （PLFA） and multiplex-terminal restriction fragment length polymorphism （M-TRFLP） techniques. There was no clear dose-response relationship between Cu pollution and soil enzyme activity except for urease. Both PLFA and M-TRFLP methods showed that Cu contamination had a large effect on the soil microbial community structure. PLFA indicators of Gram-positive bacteria （16：0i, 15：0i） and fungi （18：2w6,9） relatively decreased with increasing Cu concentration, whereas indicators of Gram-negative bacteria （19：0cy, 16：1w7） increased. The M-TRFLP results suggested that there was a dose-dependent response between Cu pollution and bacterial community or fungal community. The fungal community was more sensitive to Cu pollution than the bacterial community. Therewere no significant differences in archaeal community structure between the different Cu pollution plots and axchaea might be more tolerant to Cu pollution than both bacteria and fungi.
