Microbial Community Structure and Function Indicate the Severity of Chromium Contamination of the Yellow River

Frontiers in Microbiology
Yaxin PeiXiangkai Li

Abstract

The Yellow River is the most important water resource in northern China. In the recent past, heavy metal contamination has become severe due to industrial processes and other anthropogenic activities. In this study, riparian soil samples with varying levels of chromium (Cr) pollution severity were collected along the Gansu industrial reach of the Yellow River, including samples from uncontaminated sites (XC, XGU), slightly contaminated sites (LJX, XGD), and heavily contaminated sites (CG, XG). The Cr concentrations of these samples varied from 83.83 mg⋅kg-1(XGU) to 506.58 mg⋅kg-1(XG). The chromate [Cr (VI)] reducing ability in the soils collected in this study followed the sequence of the heavily contaminated > slightly contaminated > the un-contaminated. Common Cr remediation geneschrAandyieFwere detected in the XG and CG samples. qRT-PCR results showed that the expression ofchrAwas up-regulated four and threefold in XG and CG samples, respectively, whereas the expression ofyieFwas up-regulated 66- and 7-fold in the same samples after 30 min treatment with Cr (VI). The copy numbers ofchrAandyieFdidn't change after 35 days incubation with Cr (VI). The microbial communities in the Cr contaminated sampling sites were different fr...Continue Reading

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Citations

Jun 28, 2019·Environmental Monitoring and Assessment·Pelin S Çiftçi TüretkenKemal Güneş
Sep 25, 2019·Proceedings of the National Academy of Sciences of the United States of America·Jörn PetersenAnne-Kristin Kaster
Nov 18, 2018·The ISME Journal·Kristin M RathJohannes Rousk
Oct 2, 2020·International Journal of Environmental Research and Public Health·Jiejie YangLuhua Jiang
Mar 12, 2021·Journal of Environmental Management·Bhupendra PushkarNikita Nilkanth
Aug 13, 2021·International Journal of Phytoremediation·Yang LuoYangzhou Xiang
Feb 19, 2019·Environmental Science & Technology·Jiaxin ShiJianhua Guo
Sep 3, 2021·Scientific Reports·Ganiyu Oladunjoye OyetiboChiamaka Shileakanwa Ukwuoma

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Methods Mentioned

BETA
PCR

Software Mentioned

R
SPSS

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