Distinct Intra-lake Heterogeneity of Diazotrophs in a Deep Oligotrophic Mountain Lake
文献类型：期刊论文
| 作者 | Wang, Lina; Xing, Peng; Li, Huabing; Zhou, Lijun; Wu, Qinglong L. |
| 刊名 | MICROBIAL ECOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 79期号:4页码:840-852 |
| 英文摘要 | To date, little is known about the diazotrophs in freshwater ecosystems. In this study, we examined the diversity, abundance, and distribution of the diazotrophic community in the deep oligotrophic Lake Fuxian using high-throughput sequencing and quantitative polymerase chain reaction of nifH genes. Our results showed that the diazotrophs in Lake Fuxian were diverse and were distributed among Proteobacteria, Planctomycetes, Cyanobacteria, Verrucomicrobia, Bacteroidetes, Chloroflexi, and other unclassified environmental sequences. For the first time, it is found that Bacteroidetes and Planctomycetes harbor diazotrophs in freshwater ecosystems. The diazotrophic community compositions were significantly different between the littoral and pelagic zones in the surface layer, and they also changed dramatically along the vertical profile. High diazotrophic abundance and diversity were mostly observed in the surface littoral zone, and overall, a significant relationship between nifH gene richness and abundance was observed. The water turbidity, nitrite, and phosphorus were the most important factors explaining the spatial changes in diversity and abundances of this important functional group. The two most dominant operational taxonomic units belonging to Betaroproteobacteria and Planctomycetes demonstrated opposite distribution patterns in abundance that were driven by non-overlapping environmental factors. This study is by far the first to uncover the high diversity and intra-lake heterogeneity of diazotrophs in a freshwater lake and illuminate the controlling factors. It provides the probability of the co-occurrence of N-2 fixation and N-loss in particles. |
| 源URL | [http://159.226.73.51/handle/332005/20206]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Lina,Xing, Peng,Li, Huabing,et al. Distinct Intra-lake Heterogeneity of Diazotrophs in a Deep Oligotrophic Mountain Lake[J]. MICROBIAL ECOLOGY,2020,79(4):840-852. |
| APA | Wang, Lina,Xing, Peng,Li, Huabing,Zhou, Lijun,&Wu, Qinglong L..(2020).Distinct Intra-lake Heterogeneity of Diazotrophs in a Deep Oligotrophic Mountain Lake.MICROBIAL ECOLOGY,79(4),840-852. |
| MLA | Wang, Lina,et al."Distinct Intra-lake Heterogeneity of Diazotrophs in a Deep Oligotrophic Mountain Lake".MICROBIAL ECOLOGY 79.4(2020):840-852. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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