IHB OpenIR  > 水环境工程研究中心  > 期刊论文
Effects of organic carbon consumption on denitrifier community composition and diversity along dissolved oxygen vertical profiles in lake sediment surface
Hong Pei1,2; Gong Shihao1,2; Wang Chunbo1,2; Shu Yilin3; Wu Xingqiang1,2; Tian Cuicui1,2; Donde, Oscar Omondi1,2; Cai Pei1,2; Wu Huaming1,2; Xiao Bangding1,2
2019-10-21
Source PublicationJOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
Issue1Pages:12
Abstract

At present, the understanding of the dynamics of denitrifiers at different dissolved oxygen (DO) layers under organic carbon consumption within the surface sediments remains inadequate. In this study, high-throughput sequencing and quantitative PCR targeting nirS gene were used to analyze the denitrifier abundance dynamics, community composition, and structure for aerobic (DO 0.5-6.9 mg/L), hypoxic-anoxic (DO 0-0.5 mg/L), and anoxic (DO 0 mg/L) layers in surface sediments under organic carbon consumption. Based on the analysis of nirS gene abundance, the values of denitrifying bacteria decreased with organic carbon consumption at different DO layers. When the bacterial species abundance at the genus level were compared between the high-carbon and low-carbon sediments, there was significant increase in 6 out of 36, 7 out of 36 and 6 out of 36 genera respectively for the aerobic, hypoxic-anoxic and anoxic layers. On the other hand, 14 out of 36, 9 out of 36 and 15 out of 36 genera showed significant decrease in bacterial species abundance respectively for the aerobic, hypoxic-anoxic and anoxic layers. Additionally, 14 out of 36, 20 out of 36, and 15 out of 36 genera had no change in bacterial species abundance respectively for the aerobic, hypoxic-anoxic, and anoxic layers. This indicates that the carbon utilization ability of different denitrifiers on each DO layers was generally different from each other. Diversity of denitrifying bacteria also presented significant differences in different DO layers between the high- and low-carbon content sediment layers. Moreover, under the high-carbon and low-carbon content, the abundance of nirS gene showed a high peak within the hypoxic-anoxic regions, suggesting that this region might be the main distribution area for the denitrifying bacteria within the surface sediments. Furthermore, community of unique denitrifiers occurred in different DO layers and the adaptive changes of the denitrifier community followed the organic carbon consumption.

Keywordeutrophic freshwater lake surface sediments dissolved oxygen profiles denitrifier organic carbon consumption
DOI10.1007/s00343-019-9103-z
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000491816200004
WOS KeywordSIMULTANEOUS PARTIAL NITRIFICATION ; NITRATE REMOVAL ; WASTE-WATER ; MICROBIAL COMMUNITIES ; NITROUS-OXIDE ; MINE DRAINAGE ; NIRS ; BACTERIA ; SOIL ; WETLANDS
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35323
Collection水环境工程研究中心_期刊论文
Corresponding AuthorXiao Bangding
Affiliation1.Chinese Acad Sci, Key Lab Algal Biol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Anhui Normal Univ, Coll Life Sci, Wuhu 241000, Peoples R China
Recommended Citation
GB/T 7714
Hong Pei,Gong Shihao,Wang Chunbo,et al. Effects of organic carbon consumption on denitrifier community composition and diversity along dissolved oxygen vertical profiles in lake sediment surface[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019(1):12.
APA Hong Pei.,Gong Shihao.,Wang Chunbo.,Shu Yilin.,Wu Xingqiang.,...&Xiao Bangding.(2019).Effects of organic carbon consumption on denitrifier community composition and diversity along dissolved oxygen vertical profiles in lake sediment surface.JOURNAL OF OCEANOLOGY AND LIMNOLOGY(1),12.
MLA Hong Pei,et al."Effects of organic carbon consumption on denitrifier community composition and diversity along dissolved oxygen vertical profiles in lake sediment surface".JOURNAL OF OCEANOLOGY AND LIMNOLOGY .1(2019):12.
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