Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (6): 230-236.doi: 10.13560/j.cnki.biotech.bull.1985.2016-0861

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Study on the Changes of Soil Microbial Community Structure in Farmland by Estrone Stress

TIAN Lin, ZHANG Xun   

  1. College of Environment/Key Laboratory of Regional Environment and Eco-Remediation,Ministry of Education,Shenyang University,Shenyang 110044
  • Received:2016-09-12 Online:2017-06-26 Published:2017-06-19

Abstract: Estrone is one of natural steroidal estrogens which have female effect and characterizes by high toxicity and refractory. It can accumulate in the body through the food chain,threatening human and animal health. In this study,PCRand DGGE was used to analyze the variation of the microbial community structure in estrone-contaminated farmland soil samples. The results showed that the higher the concentration of estrone,the deeper the effect on the microbial population,and the more complex the phylogenetic relationship among populations. When the concentration of estrone was 500 ng/kg to 2 000 ng/kg,the diversity of microbial community decreased with the increase of E1 concentration;the diversity increased rapidly when the concentration of estrone was over a certain value,and the increase trend of diversity gradually became slower when the concentrations of E1 continuously increased. Estrone in the presence of microorganisms can be transformed to estradiol,estriol and bound-state E1-3G,this transformation brings more complex changes to the microbial community diversity.

Key words: estrone, soil in farmland, microbial community structure, PCR-DGGE