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Citation
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HERO ID
3859804
Reference Type
Journal Article
Title
Vertical distribution of microbial communities in soils contaminated by chromium and perfluoroalkyl substances
Author(s)
Li, B; Bao, Y; Xu, Y; Xie, S; Huang, J
Year
2017
Is Peer Reviewed?
1
Journal
Science of the Total Environment
ISSN:
0048-9697
EISSN:
1879-1026
Volume
599-600
Page Numbers
156-164
Language
English
PMID
28475909
DOI
10.1016/j.scitotenv.2017.04.241
Web of Science Id
WOS:000405252000019
Abstract
Both Bacteria and Archaea are important players in soil biogeochemical cycles. Both chromium (Cr) and perfluoroalkyl substances (PFASs) are widely present in soil environment. However, the depth-related distribution of microbial community in soils contaminated by Cr or/and PFASs remains unknown. Hence, the present study applied quantitative PCR assay and Illumina MiSeq sequencing to investigate the vertical variations of archaeal and bacterial communities in soils (0.5-12.5m depth) contaminated by chrome plating waste and the potential effects of Cr and PFASs. Both bacterial and archaeal communities displayed the remarkable depth-related changes of abundance (2.16×10(7)-5.05×10(9) and 4.95×10(5)-2.56×10(8) 16S rRNA gene copies per gram dry soil respectively for Bacteria and Archaea), diversity (bacterial and archaeal Shannon diversity indices of 5.06-6.34 and 2.91-4.61, respectively) and structure. However, at each soil depth, bacterial community had higher abundance, richness and diversity than archaeal community. Soil bacterial communities were mainly composed of Proteobacteria, Chloroflexi, Actinobacteria and Firmicutes, and archaeal communities were dominated by Thaumarchaeota and unclassified Archaea. Moreover, microbial abundance and richness increased with increasing perfluorohexane sulfonate (PFHxS) content. Microbial abundance was correlated to total Cr, and archaeal richness was correlated to total Cr and Cr(IV). In addition, total Cr might be a key determinant of soil microbial community structure.
Keywords
Chromium; Perfluoroalkyl substances; Soil depth; Microbial community
Tags
PFAS
•
Additional PFAS (formerly XAgency)
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFHxS (355-46-4)
Literature search
Pubmed
•
PFAS 150
Literature Search Update December 2020
PubMed
Literature Search August 2019
PubMed
Not prioritized for screening
Perfluorohexanesulfonic acid
•
PFBA
Protocol References
•
PFHxS
Database searches
Pubmed
Toxline
WOS
Scopus
Excluded
TiAb
•
PFNA
Literature Search
Toxline
PFNA May 2019 Update
Toxnet
Title and Abstract Screening
Excluded
Not relevant to PECO
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