Myriophyllum elatinoides growth and rhizosphere bacterial community structure under different nitrogen concentrations in swine wastewater,Bioresource Technology

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Myriophyllum elatinoides growth and rhizosphere bacterial community structure under different nitrogen concentrations in swine wastewater
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.biortech.2020.122776
Xi Li ₁ , Yuyuan Li ₁ , Yong Li ₁ , Jinshui Wu ₂

Affiliation

In this study, growth under different nitrogen (N) concentrations (2, 250, 300, 350 and 400 mg L) and changes in rhizosphere bacterial community structure were investigated. High N (>300 mg L) concentrations caused reduction in biomass. Growth tended to stabilize at 49 days. N concentration in roots were higher than that in stems and leaves under high N conditions. TN and NH removal efficiencies reached 84.0% and 87.2%, respectively, in surface flow constructed wetlands (SFCWs). Rhizosphere bacterial diversity increased over time. , , , and dominated at the phylum level. Genera , , and increased at low N (<300 mg L) concentrations, while increased at high N concentrations over the experimental period. Redundancy analysis showed that pH was strongly correlated with changes in rhizosphere bacterial community structure. These findings helped to insight into N removal mechanism in .

中文翻译：

不同氮浓度养猪废水中狐尾藻生长及根际细菌群落结构

本研究调查了不同氮（N）浓度（2、250、300、350和400 mg·L）下的生长和根际细菌群落结构的变化。高氮浓度（>300 mg·L）导致生物量减少。生长在 49 天趋于稳定。高氮条件下根部氮素浓度高于茎叶。地表流人工湿地 (SFCW) 中 TN 和 NH 的去除效率分别达到 84.0% 和 87.2%。根际细菌多样性随着时间的推移而增加。、、、并在门水平上占主导地位。在实验期间，、和属在低氮浓度（<300 mg·L）下增加，而在高氮浓度下增加。冗余分析表明pH与根际细菌群落结构的变化密切相关。这些发现有助于深入了解中的氮去除机制。

更新日期：2020-01-10

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