Active degradation-nitrification microbial assemblages in the hypoxic zone in a subtropical estuary
文献类型：期刊论文
| 作者 | Lu, Yanhong7,8,9,10; Cheung, Shunyan6; Koh, Xiu Pei5; Xia, Xiaomin4; Jing, Hongmei3 ; Lee, Puiyin9; Kao, Shuh-Ji2; Gan, Jianping9; Dai, Minhan2; Liu, Hongbin1,9
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2023-12-15 |
| 卷号 | 904页码:14 |
| ISSN号 | 0048-9697 |
| 关键词 | Estuary Hypoxia AOA Bacteria Cooccurrence Microbial interactions |
| DOI | 10.1016/j.scitotenv.2023.166694 |
| 英文摘要 | In 2017 summer, we observed widespread bottom hypoxia at the lower estuary of the Pearl River estuary (PRE). Our previous study noticed that AOA and bacteria were highly abundant and clustered within the hypoxia zone. Moreover, nitrification and respiration rates were also evidently higher in these hypoxic waters. These observations prompt us to investigate whether these two oxygen -consuming microorganisms have symbiotic relationships and whether specific groups consistently coexist and form ecological -meaningful associations. In this study, we use network analysis to investigate the presence and active communities (DNA -RNA) based on bacterial and AOA communities sequencing (inferred from the 16S rRNA and amoA gene, respectively) to gain more insight into ecological -meaningful associations. We observed a highly diverse and active bacterial community in the hypoxia zone. The RNA networks were more modulized than the corresponding DNA networks, indicating that the active communities were better parsed into functional microbial assemblages. The network topology revealed that Gammaproteobacteria, Bacteroidetes (Flavobacteriales), Alphaproteobacteria (Rhodobacterales and Rhodospirillales), Marinimicrobia, Cyanobacteria (Synechococcales), and AOA sublineages were module hubs and connectors, indicating that they were the keystone taxa of the microbial communities. The hubsubnetwork further showed robust co -occurrence between Gammaproteobacteria, Bacteroidetes (Flavobacteriales), Alphaproteobacteria (Rhodobacterales and Rhodospirillales), Marinimicrobia with AOA sublineages, and Nitrospinae (presumably NOB) reflecting the formation of Degradation -Nitrification (sequential oxidation of Organic matter degradation to ammonia, then nitrate) microbial assemblage in the hypoxia zone. The subnetworks revealed AOA ecotype -specific modularization and niche partitioning of different AOA sublineages. Interestingly, the recurring co -occurrence of nitrifiers assemblage in the RNA subnetworks (SCM1-like-II (AOA) and Nitrospinae OTUs (NOB) suggests an active interaction via nitrite exchange. The Degradation -Nitrification microbial assemblage may contribute substantially to the oxygen consumption in the hypoxia formation in PRE. Our results provide new insight into the functional microbial assemblages, which is worth further investigation on their ecological implication in estuarine waters. |
| WOS关键词 | AMMONIA-OXIDIZING ARCHAEA ; PEARL RIVER ESTUARY ; NITRIFYING ARCHAEA ; MARINE ; DIVERSITY ; BACTERIA ; COMMUNITIES ; OXIDATION ; CRENARCHAEOTA ; COLONIZATION |
| 资助项目 | National Key Research and Development Program of China[2022YFC3105301] ; National Natural Science Foundation of China[31971501] ; Research Grants Council (Hong Kong RGC) Theme -Based Research Scheme[T21 -602/16-R] ; RGC-NSFC Joint Research Scheme[N_HKUST609/15] ; GRF[16128416] ; GRF[16101318] ; Hong Kong Branch of Southern Marine Science & Engineering Guangdong Laboratory (Guangzhou)[SMSEGL20SC01] ; National Natural Science Foundation of China[41776147] ; Sustainable Development Special Project of Shenzhen Science and Technology Innovation Committee[2023N007] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001158681900001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Research Grants Council (Hong Kong RGC) Theme -Based Research Scheme ; RGC-NSFC Joint Research Scheme ; GRF ; Hong Kong Branch of Southern Marine Science & Engineering Guangdong Laboratory (Guangzhou) ; National Natural Science Foundation of China ; Sustainable Development Special Project of Shenzhen Science and Technology Innovation Committee |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/10857]  |
| 专题 | 深海科学研究部_深海生物学研究室_海洋微生物分子生态学研究组 |
| 通讯作者 | Lu, Yanhong; Liu, Hongbin |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Hong Kong Branch, Southern Marine Sci & Engn Guangdong Lab Guangzhou, Kowloon, Hong Kong, Peoples R China 2.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Guangdong, Peoples R China 5.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Kowloon, Hong Kong, Peoples R China 6.Natl Taiwan Ocean Univ, Inst Marine Biol, Keelung, Taiwan 7.Shenzhen Marine Dev & Promot Ctr, Shenzhen, Peoples R China 8.Tsinghua Univ, Inst Ocean Engn, Shenzhen Int Grad Sch, Shenzhen 518055, Guangdong, Peoples R China 9.Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong, Peoples R China 10.Shenzhen Univ, SZU HKUST Joint PhD Program Marine Environm Sci, Shenzhen 518060, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yanhong,Cheung, Shunyan,Koh, Xiu Pei,et al. Active degradation-nitrification microbial assemblages in the hypoxic zone in a subtropical estuary[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,904:14. |
| APA | Lu, Yanhong.,Cheung, Shunyan.,Koh, Xiu Pei.,Xia, Xiaomin.,Jing, Hongmei.,...&Liu, Hongbin.(2023).Active degradation-nitrification microbial assemblages in the hypoxic zone in a subtropical estuary.SCIENCE OF THE TOTAL ENVIRONMENT,904,14. |
| MLA | Lu, Yanhong,et al."Active degradation-nitrification microbial assemblages in the hypoxic zone in a subtropical estuary".SCIENCE OF THE TOTAL ENVIRONMENT 904(2023):14. |
入库方式： OAI收割
来源：深海科学与工程研究所
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