College of Water Resources & Civil Engineering, China Agricultural University, Haidian, Beijing, China.
PLoS One. 2020 Feb 18;15(2):e0229097. doi: 10.1371/journal.pone.0229097. eCollection 2020.
Urban lake sediment plays a very important role in waterbody ecosystems. It is the basis of nutrient cycling and material exchange between microorganisms and lake ecosystems. In this study, Illumina high-throughput sequencing technology was employed to detect the structure and species richness of Archaea in anoxic sediments of urban waterbodies (Aohai Lake and Kunming Lake) in Beijing, and the environmental factors (pH level, organic matter, available nitrogen and total nitrogen) affecting the structure and succession of archaeal communities were also investigated. The results showed that there were 13 classified archaeal phyla, and the most frequent archaeal species in the lakes were Bathyarchaeota (MCG), Euryarchaeota, Thaumarchaeota, Aenigmarchaeota, Hadesarchaea, Lokiarchaeota, and Parvarchaeota. The top ten most abundant genera in the two lakes were significantly associated with at least one environmental factor. The results of this study enrich the understanding of microbial diversity in urban eutrophic lake sediments in northern China.
城市湖泊沉积物在水体生态系统中起着非常重要的作用。它是微生物与湖泊生态系统之间养分循环和物质交换的基础。本研究采用 Illumina 高通量测序技术，检测了北京奥海湖和昆明湖缺氧沉积物中古菌的结构和物种丰富度，并探讨了影响古菌群落结构和演替的环境因素（pH 值、有机质、有效氮和总氮）。结果表明，有 13 个分类古菌门，湖泊中最常见的古菌是广古菌门（MCG）、古菌门、泉古菌门、奇古菌门、热泉古菌门、泉古菌门和古菌门。这两个湖泊中排名前十的最丰富属与至少一个环境因子显著相关。本研究结果丰富了对中国北方富营养化城市湖泊沉积物中微生物多样性的认识。
