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Microbial community compositions and sulfate-reducing bacterial profiles in malodorous urban canal sediments

Authors :
Krittayapong Jantharadej
Kwanrawee Sirikanchana
Akechai Kongprajug
Benjaporn Boonchayaanant Suwannasilp
Skorn Mongkolsuk
Tawan Limpiyakorn
Source :
Archives of Microbiology. 203:1981-1993
Publication Year :
2021
Publisher :
Springer Science and Business Media LLC, 2021.

Abstract

Anthropogenically impacted urban canals represent distinct freshwater ecosystems that could shape microbial communities in underlying sediments; however, knowledge of the relationships between environmental factors and microbial community compositions and their functions in such an environment is limited. This study characterized the microbial community compositions of malodorous canal sediments at six locations along the Saen Saep Canal in Thailand. 16S rRNA gene amplicon sequencing (MiSeq, Illumina) revealed dominant genera classified as fermentative bacteria, methanogens, and sulfate-reducing bacteria (SRB), all of which emphasized anaerobic environments. SRB, as the primary producers of malodorous hydrogen sulfide, accounted for 8.2-30.4% of the total sequences. dsrB gene clone libraries further identified the SRB species. A constrained correspondence analysis demonstrated a spatial pattern of SRB that correlated with physicochemical parameters in which nitrate and sulfate in sediments were the most influencing factors. Overall, a better understanding of the SRB and other related microorganisms in canal sediments can assist in the future implementation of appropriate olfactory abatement and management methodologies in urban canals.

Details

ISSN :
1432072X and 03028933
Volume :
203
Database :
OpenAIRE
Journal :
Archives of Microbiology
Accession number :
edsair.doi.dedup.....a3ea05d3e1ae7ee02b147eccc8cd923d
Full Text :
https://doi.org/10.1007/s00203-020-02157-7