Dissipation characteristics of pyrene and ecological contribution of submerged macrophytes and their biofilms-leaves in constructed wetland

Bioresource Technology
Zhenhua ZhaoJavid Hussain

Abstract

The dissipation characteristics of pyrene and ecological contribution of submerged macrophytes (Vallisneria natans, Hydrilla verticillata and artificial plant) and their biofilms-leaves in constructed wetland system were investigated by high-throughput sequencing. Results showed a non-negligible ecological contribution of submerged macrophytes and their biofilms-leaves in dissipating pyrene in planted sediments (33.25-43.00%) in contrast with unplanted system (23.25-26.50%). Alpha and Beta diversity analysis indicated that bacterial community structures were influenced in order of attached surface > incubation time > spiking concentration of pyrene in sediment. Difference analysis suggested that attached surface tended to affect the rare genera up to significant level compared with incubation time. In addition, RDA analysis showed that PAH-degrading bacteria in biofilms-leaves of submerged macrophytes were positively correlated with the dissipation ratios of pyrene. Interestingly, nitrogen transforming microorganisms were also influenced in the presence of pyrene, while submerged macrophytes contributed to alleviate the impact.

Citations

Oct 22, 2020·Microorganisms·Mikhail V SemenovNataliya M Shchegolkova
May 26, 2021·The Science of the Total Environment·Congcong ZhaoQian Wang
Mar 11, 2020·Ecotoxicology and Environmental Safety·Hao ZhangZheng Zheng

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.