Responses of bacterial community to dibutyl phthalate pollution in a soil-vegetable ecosystem
| Autor: | Zhigang Wang, Xiao Kong, Ye Deng, Decai Jin, Shulan Jin, Meiying Xu, Huaqun Yin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Environmental Engineering genetic structures Dibutyl phthalate Health Toxicology and Mutagenesis Bulk soil 010501 environmental sciences 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Nitrate Plasticizers RNA Ribosomal 16S Vegetables Soil Pollutants Environmental Chemistry Ecosystem cardiovascular diseases Waste Management and Disposal Soil Microbiology 0105 earth and related environmental sciences Pollutant Rhizosphere Bacteria Brassica napus Phthalate Biodiversity Pollution Dibutyl Phthalate 030104 developmental biology chemistry Environmental chemistry Soil water circulatory and respiratory physiology |
| Zdroj: | Journal of Hazardous Materials. 353:142-150 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2018.04.015 |
| Popis: | Phthalate esters (PAEs) are a type of plasticizer that has aroused great concern due to their mutagenic, teratogenic, and carcinogenic effects, wherefore dibutyl phthalate (DBP) and other PAEs have been listed as priority pollutants. In this study, the impacts of DBP on a soil-vegetable ecosystem were investigated. The results showed that DBP could accumulate within vegetable tissues, and the accumulative effect was enhanced with higher levels of DBP contamination in soils. DBP accumulation also decreased vegetable quality in various ways, including decreased soluble protein content and increased nitrate content. The diversity of bacteria in soils gradually decreased with increasing DBP concentration, while no clear association with endophytic bacteria was observed. Also, the relative abundance, structure, and composition of soil bacterial communities underwent successional change during the DBP degradation period. The variation of bulk soil bacterial community was significantly associated with DBP concentration, while changes in the rhizosphere soil bacteria community were significantly associated with the properties of both soil and vegetables. The results indicated that DBP pollution could increase the health risk from vegetables and alter the biodiversity of indigenous bacteria in soil-vegetable ecosystems, which might further alter ecosystem functions in agricultural fields. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect