Bacterial Community Structure and Its Relationship with Heavy Metals in Sediments of Diannong River

被引：0
|
作者：
Liu S.-Y. [1 ]
Meng J.-J. [1 ]
Qiu X.-C. [2 ]
Zhou R.-J. [3 ]
Li L. [1 ]
机构：
[1] School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan
[2] School of Life Science, Ningxia University, Yinchuan
[3] Ningxia Environment Monitoring Center, Yinchuan
来源：
Huanjing Kexue/Environmental Science | 2024年 / 45卷 / 04期
关键词：
bacteria; community characteristics; Diannong River; heavy metal factor; sediment;
D O I：
10.13227/j.hjkx.202304131
中图分类号：
学科分类号：
摘要：
River sediment bacteria play an important role in the transport of organic matter and nutrients，and their community structure characteristics can be influenced by environmental factors. To investigate the sediment bacterial community structure of the Diannong River（upstream section）and its influencing factors，sediment samples were collected and investigated in the upstream section of the Diannong River in January，April，July，and October 2021. The levels of nine heavy metals（Cu，Zn，Pb，Fe，Mn，As，Cr，Cd，and Hg）in the sediments were measured. Based on high-throughput sequencing of 16S rRNA gene amplicons，the structural characteristics of sediment bacterial communities in different seasons of the Diannong River（upstream section）were analyzed. The drivers of community structure changes in the Diannong River were identified using redundancy analysis（RDA）. The results showed that the community structure of the Diannong River（upstream section）was characterized by redundancy analysis（RDA），and the drivers of community structure changes in the Diannong River were identified. The abundance of bacterial species in the Yongning section of the Diannong River was higher than that in the Yinchuan section of the Diannong River spatially，and the abundance of bacterial species in July and October was higher than that in January and April temporally. The most dominant phylum of sediment bacteria in the Diannong River was Proteobacteria，and the other dominant phyla were Bacteroidetes and Desulfobacterota. The dominant bacterial genera in the sediment of the Diannong River were Sulfitobacter，Amylibacter，Planktomarina，Sulfurifustis，SUP05_cluster，Arenimonas，Candidatus_Methanoperedens，Thioalkalispira，Methylobacterium，Trichococcus，Ralstonia，MND1，and Paraclostridium. There were significant temporal differences in the dominant phylum in the sampled sites and significant changes in the composition of the bacterial community structure in January，April，and July，but spatial differences were not significant. The similarity of bacterial community structure was higher in January，April，and July. Different heavy metal factors affected different dominant phyla in different months，and As and Hg had more significant effects. Euyarchaeota，Bacteroidota，unidentified_Bacteria，and unidentified_Archaea were more susceptible to the effects of different heavy metal factors in different months. © 2024 Science Press. All rights reserved.
引用
收藏
页码：2233 / 2245
页数：12
相关论文
共 51 条
  • [1] Sutcliffe B, Hose G C，, Harford A J，, Et al., Microbial communities are sensitive indicators for freshwater sediment copper contamination［J］, Environmental Pollution, 247, pp. 1028-1038, (2019)
  • [2] Li J Z，, Cheng N N，, Chen Q J., Progress in the study of bioremediation for polluted water bodies［J］, Techniques and Equipment for Environmental Pollution Control, 6, 1, pp. 25-30, (2005)
  • [3] Zhang T., Study on the characteristics of water microbial community in Lake-River ecotone of Poyang Lake［D］, (2018)
  • [4] Guo Q P., Study on microbial community structure in Lake-River ecotone of Poyang Lake ［D］, (2017)
  • [5] Schneider A R，, Gommeaux M，, Duclercq J，, Et al., Response of bacterial communities to Pb smelter pollution in contrasting soils ［J］, Science of the Total Environment, 605-606, pp. 436-444, (2017)
  • [6] Hu J., Evaluation of water ecosystem in Yinchuan section of Diannong river ［J］, Leather Manufacture and Environmental Technology, 3, 17, pp. 151-153, (2022)
  • [7] He S J., Study on water ecological carrying capacity of Dianong River ［D］, (2022)
  • [8] Cao Z Q., Diagnosis and evaluation of water environmental health in Yinchuan section of Dianong River ［D］, (2022)
  • [9] Zhang L，, Xu H., Health evaluation of Diannong River in Ningxia ［J］, Journal of Hydroecology, 41, 2, pp. 16-22, (2020)
  • [10] Li S L, Zhao Z F，, Qiu X C，, Et al., Distribution characteristics and risk assessment of heavy metals in Qingshui River basin of Ningxia ［J］, Journal of Irrigation and Drainage, 39, 7, pp. 128-137, (2020)
123456