Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 164, Issue -, Pages 597-603Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2018.08.053
Keywords
Tetrabromobisphenol A; Soil microbial community; Selective antibacterial activity; Ecological risk
Categories
Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB14010300]
- State Key Laboratory of Microbial Technology Open Projects Fund [M2015-07]
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Tetrabromobisphenol A (TBBPA) is the most widely used brominated flame retardant. Most studies regarding TBBPA have concentrated on its occurrence, distribution, toxicity and degradation in the environment. However, little is known about its ecological effects on soil microbial communities. In this study, we investigated the effect of TBBPA on soil microbial community. Overall, the data suggested that the growth and composition of soil microorganisms were correlated to the TBBPA concentration and exposure time. Phospholipid-derived fatty acid analysis (PLFAs) showed that significant microbial growth inhibitions were 46.1% and 46.9% in 40 mg/kg TBBPA-treated soils after 45-day incubation under aerobic and anaerobic conditions, respectively. Results of PLFAs and llumina sequencing indicated that TBBPA mainly inhibited Gram-positive bacteria, but not Gram-negative bacteria. The selective antibacterial activity of TBBPA toward Gram-positive bacteria was further confirmed in pure bacteria cultures. These data suggested that, in addition to their effect on microbial growth and composition, TBBPA may affect the microbial ecology. Additional research should be carried out to identify the ecological risk of TBBPA in soil.
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