Metagenomic analysis of microbial communities continuously exposed to Bisphenol A in mangrove rhizosphere and non-rhizosphere soils
| Autor: | Qian Wang, Tianli Tong, Minwei Chai, Shuguang Xie, Ruili Li, Yuyin Yang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
endocrine system
Environmental Engineering Novosphingobium 010504 meteorology & atmospheric sciences 010501 environmental sciences Biology Bruguiera 01 natural sciences Soil Phenols Botany Environmental Chemistry Benzhydryl Compounds Waste Management and Disposal Soil Microbiology 0105 earth and related environmental sciences Rhizosphere urogenital system Microbiota biology.organism_classification Pollution Phytoremediation Biodegradation Environmental Avicennia marina Mangrove Microcosm Aegiceras corniculatum hormones hormone substitutes and hormone antagonists |
| Zdroj: | Science of The Total Environment. 792:148486 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2021.148486 |
| Popis: | Bisphenol A (BPA) is widely distributed in littoral zones and may cause adverse impacts on mangrove ecosystem. Biodegradation and phytoremediation are two primary processes for BPA dissipation in mangrove soils. However, the rhizosphere effects of different mangrove species on BPA elimination are still unresolved. In this study, three typical mangrove seedlings, namely Avicennia marina, Bruguiera gymnorrhiza (L.) and Aegiceras corniculatum, were cultivated in soil microcosms for four months and then subjected to 28-day continuous BPA amendment. Un-planted soil microcosms (as control) were also set up. The BPA residual rates and root exudates were monitored, and the metabolic pathways as well as functional microbial communities were also investigated to decipher the rhizosphere effects based on metagenomic analysis. The BPA residual rates in all planted soils were significantly lower than that in un-planted soil on day 7. Both plantation and BPA dosage had significant effects on bacterial abundance. A distinct separation of microbial structure was found between planted and un-planted soil microcosms. Genera Pseudomonas and Lutibacter got enriched with BPA addition and may play important roles in BPA biodegradation. The shifts in bacterial community structure upon BPA addition were different among the microcosms with different mangrove species. Genus Novosphingobium increased in Avicennia marina and Bruguiera gymnorrhiza (L.) rhizosphere soils but decreased in Aegiceras corniculatum rhizosphere soil. Based on KEGG annotation and binning analysis, the proposal of BPA degradation pathways and the quantification of relevant functional genes were achieved. The roles of Pseudomonas and Novosphingobium may differ in lower BPA degradation pathways. The quantity variation patterns of functional genes during the 28-day BPA amendment were different among soil microcosms and bacterial genera. |
| Databáze: | OpenAIRE |
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