| Literature DB >> 24565872 |
Yi Chen1, Yue Wen2, Qi Zhou2, Jan Vymazal3.
Abstract
The effect of Typha latifolia and its litter on density and abundance of three denitrifying genes (nirS, nirK and nosZ) were investigated in six laboratory-scale SSF CW microcosms. Results showed that the copy numbers of nirS, nirK and nosZ in wetland microcosms were ranged between 10(8)-10(9), 10(6)-10(7) and 10(7)-10(8) copies g(-1), respectively. The presence of T. latifolia encouraged the growth of nirK containing bacteria. Addition of cattail litter could greatly stimulate the growth of bacteria containing nirS and nosZ gene. Path analysis illustrated that the presence of plants and litters had no significant direct impact on denitrifying genes, while it affected the denitrifying genes via alteration of dissolved oxygen and carbon sources.Entities:
Keywords: Cattail litter; Denitrifying genes; Nitrate removal; Subsurface flow constructed wetlands (SSF CWs); Typha latifolia
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Year: 2014 PMID: 24565872 DOI: 10.1016/j.biortech.2014.01.137
Source DB: PubMed Journal: Bioresour Technol ISSN: 0960-8524 Impact factor: 9.642