| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4425377 | Environmental Pollution | 2011 | 5 Pages |
A rhizobox experiment was conducted to investigate degradation of decabromodiphenyl ether (BDE-209) in the rhizosphere of ryegrass and the influence of root colonization with an arbuscular mycorrhizal (AM) fungus. BDE-209 dissipation in soil varied with its proximity to the roots and was enhanced by AM inoculation. A negative correlation (P < 0.001, R2 = 0.66) was found between the residual BDE-209 concentration in soil and soil microbial biomass estimated as the total phospholipid fatty acids, suggesting a contribution of microbial degradation to BDE-209 dissipation. Twelve and twenty-four lower brominated PBDEs were detected in soil and plant samples, respectively, with a higher proportion of di- through hepta-BDE congeners in the plant tissues than in the soils, indicating the occurrence of BDE-209 debromination in the soil-plant system. AM inoculation increased the levels of lower brominated PBDEs in ryegrass. These results provide important information about the behavior of BDE-209 in the soil-plant system.
Research highlights► BDE-209 dissipation in soil was affected by the proximity to the roots. ► Microbial degradation contributes greatly to BDE-209 dissipation in the soil. ► Twelve and twenty-four lower brominated PBDEs were detected in soil and plant samples. ► AM inoculation increased root uptake and accumulation of BDE-209.
