PMID- 31955106
OWN - NLM
STAT- MEDLINE
DCOM- 20200323
LR  - 20200323
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 713
DP  - 2020 Apr 15
TI  - Influence of multi-walled carbon nanotubes on the microbial biomass, enzyme 
      activity, and bacterial community structure in 2,4-dichlorophenol-contaminated 
      sediment.
PG  - 136645
LID - S0048-9697(20)30155-8 [pii]
LID - 10.1016/j.scitotenv.2020.136645 [doi]
AB  - The rise in manufacture and use of carbon nanotubes has aroused the concern about 
      their potential risks associated with coexisting pollutants in the aquatic 
      environment. 2,4-dichlorophenol (2,4-DCP), with a high toxicity to many aquatic 
      organisms, is a widespread pollutant resulting from the extensive use of 
      pesticides and preservatives. In this article, the adsorption of 2,4-DCP by 
      riverine sediment and the responses of sediment microbial community to 2,4-DCP 
      were studied in the presence of multi-walled carbon nanotubes (MWCNTs). Adding 
      MWCNTs significantly increased the adsorption amount of sediment for 2,4-DCP from 
      0.541 to 1.44 mg/g as the MWCNT concentration increased from 0 to 15 mg/g. The 
      responses of sediment microbial community were determined after one-month 
      exposure to MWCNTs at different concentrations (0.05, 0.5, 5, and 50 mg/g). The 
      microbial biomass carbon in the sediment contaminated with 2,4-DCP increased in 
      the presence of 5 mg/g of MWCNTs (from 0.06 to 0.11 mg/g), but not significantly 
      changed at other MWCNT concentrations. For the sediments contaminated with 
      2,4-DCP, the presence of MWCNTs made no difference to urease activity, while the 
      dehydrogenase activity slightly increased with the addition of 5 mg/g of MWCNTs 
      and decreased in the presence of 50 mg/g of MWCNTs. The changes of sediment 
      bacterial communities were further determined by 16S rRNA gene sequencing. Based 
      on the weighted UniFrac distance between communities, the clustering analysis 
      suggested that the contamination of 2,4-DCP affected the bacterial community 
      structure in a greater degree than that caused by MWCNTs at relatively low 
      concentrations (</=5 mg/g). Bacteroidetes, Planctomycetes, and Nitrospirae were 
      feature bacterial phyla to reflect the effects of MWCNTs and 2,4-DCP on sediment 
      bacterial community. These results may contribute to the understanding of 
      microbial community response to co-exposure of MWCNTs and 2,4-DCP and the 
      assessment of associated ecological risks.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Song, Biao
AU  - Song B
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Gong, Jilai
AU  - Gong J
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Tang, Wangwang
AU  - Tang W
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Zeng, Guangming
AU  - Zeng G
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China. Electronic 
      address: zgming@hnu.edu.cn.
FAU - Chen, Ming
AU  - Chen M
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Xu, Piao
AU  - Xu P
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Shen, Maocai
AU  - Shen M
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Ye, Shujing
AU  - Ye S
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Feng, Haopeng
AU  - Feng H
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Zhou, Chengyun
AU  - Zhou C
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
FAU - Yang, Yang
AU  - Yang Y
AD  - College of Environmental Science and Engineering, Hunan University, Changsha 
      410082, PR China; Key Laboratory of Environmental Biology and Pollution Control 
      (Hunan University), Ministry of Education, Changsha 410082, PR China.
LA  - eng
PT  - Journal Article
DEP - 20200111
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Chlorophenols)
RN  - 0 (Nanotubes, Carbon)
RN  - 0 (RNA, Ribosomal, 16S)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Biomass
MH  - Chlorophenols
MH  - *Nanotubes, Carbon
MH  - RNA, Ribosomal, 16S
OTO - NOTNLM
OT  - 16S rRNA gene
OT  - 2,4-dichlorophenol
OT  - Carbon nanotubes
OT  - Microbial community
OT  - Sediment
EDAT- 2020/01/20 06:00
MHDA- 2020/03/24 06:00
CRDT- 2020/01/20 06:00
PHST- 2019/11/25 00:00 [received]
PHST- 2020/01/06 00:00 [revised]
PHST- 2020/01/10 00:00 [accepted]
PHST- 2020/01/20 06:00 [pubmed]
PHST- 2020/03/24 06:00 [medline]
PHST- 2020/01/20 06:00 [entrez]
AID - S0048-9697(20)30155-8 [pii]
AID - 10.1016/j.scitotenv.2020.136645 [doi]
PST - ppublish
SO  - Sci Total Environ. 2020 Apr 15;713:136645. doi: 10.1016/j.scitotenv.2020.136645. 
      Epub 2020 Jan 11.