Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community
Microbes play central roles in ocean food webs and global biogeochemical processes. Yet, the information available regarding the highly diverse bacterial communities in these systems is not comprehensive. Here we investigated the diversity, assembly process, and species coexistence frequency of bact...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-08-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2023.1218828/full |
| _version_ | 1827868283288682496 |
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| author | Liyun An Ying-Chun Yan Hai-Long Tian Chang-Qiao Chi Yong Nie Xiao-Lei Wu Xiao-Lei Wu |
| author_facet | Liyun An Ying-Chun Yan Hai-Long Tian Chang-Qiao Chi Yong Nie Xiao-Lei Wu Xiao-Lei Wu |
| author_sort | Liyun An |
| collection | DOAJ |
| description | Microbes play central roles in ocean food webs and global biogeochemical processes. Yet, the information available regarding the highly diverse bacterial communities in these systems is not comprehensive. Here we investigated the diversity, assembly process, and species coexistence frequency of bacterial communities in seawater and sediment across ∼600 km of the eastern Chinese marginal seas using 16S rRNA gene amplicon sequencing. Our analyses showed that compared with seawater, bacterial communities in sediment possessed higher diversity and experienced tight phylogenetic distribution. Neutral model analysis showed that the relative contribution of stochastic processes to the assembly process of bacterial communities in sediment was lower than that in seawater. Functional prediction results showed that sulfate-reducing bacteria (SRB) were enriched in the core bacterial sub-communities. The bacterial diversities of both sediment and seawater were positively associated with the relative abundance of SRB. Co-occurrence analysis showed that bacteria in seawater exhibited a more complex interaction network and closer co-occurrence relationships than those in sediment. The SRB of seawater were centrally located in the network and played an essential role in sustaining the complex network. In addition, further analysis indicated that the SRB of seawater helped maintain the high stability of the bacterial network. Overall, this study provided further comprehensive information regarding the characteristics of bacterial communities in the ocean, and provides new insights into keystone taxa and their roles in sustaining microbial diversity and stability in ocean. |
| first_indexed | 2024-03-12T15:29:28Z |
| format | Article |
| id | doaj.art-566d16884e7449f8ad9a0615188302a6 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-03-12T15:29:28Z |
| publishDate | 2023-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-566d16884e7449f8ad9a0615188302a62023-08-10T09:06:39ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2023-08-011410.3389/fmicb.2023.12188281218828Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial communityLiyun An0Ying-Chun Yan1Hai-Long Tian2Chang-Qiao Chi3Yong Nie4Xiao-Lei Wu5Xiao-Lei Wu6College of Architecture and Environment, Sichuan University, Chengdu, ChinaCollege of Architecture and Environment, Sichuan University, Chengdu, ChinaCollege of Agriculture, Henan University, Kaifeng, ChinaCollege of Engineering, Peking University, Beijing, ChinaCollege of Engineering, Peking University, Beijing, ChinaCollege of Engineering, Peking University, Beijing, ChinaInstitute of Ocean Research, Peking University, Beijing, ChinaMicrobes play central roles in ocean food webs and global biogeochemical processes. Yet, the information available regarding the highly diverse bacterial communities in these systems is not comprehensive. Here we investigated the diversity, assembly process, and species coexistence frequency of bacterial communities in seawater and sediment across ∼600 km of the eastern Chinese marginal seas using 16S rRNA gene amplicon sequencing. Our analyses showed that compared with seawater, bacterial communities in sediment possessed higher diversity and experienced tight phylogenetic distribution. Neutral model analysis showed that the relative contribution of stochastic processes to the assembly process of bacterial communities in sediment was lower than that in seawater. Functional prediction results showed that sulfate-reducing bacteria (SRB) were enriched in the core bacterial sub-communities. The bacterial diversities of both sediment and seawater were positively associated with the relative abundance of SRB. Co-occurrence analysis showed that bacteria in seawater exhibited a more complex interaction network and closer co-occurrence relationships than those in sediment. The SRB of seawater were centrally located in the network and played an essential role in sustaining the complex network. In addition, further analysis indicated that the SRB of seawater helped maintain the high stability of the bacterial network. Overall, this study provided further comprehensive information regarding the characteristics of bacterial communities in the ocean, and provides new insights into keystone taxa and their roles in sustaining microbial diversity and stability in ocean.https://www.frontiersin.org/articles/10.3389/fmicb.2023.1218828/fullsedimentseawaternetwork analysisassembly processsulfate-reducing bacteria |
| spellingShingle | Liyun An Ying-Chun Yan Hai-Long Tian Chang-Qiao Chi Yong Nie Xiao-Lei Wu Xiao-Lei Wu Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community Frontiers in Microbiology sediment seawater network analysis assembly process sulfate-reducing bacteria |
| title | Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community |
| title_full | Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community |
| title_fullStr | Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community |
| title_full_unstemmed | Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community |
| title_short | Roles of sulfate-reducing bacteria in sustaining the diversity and stability of marine bacterial community |
| title_sort | roles of sulfate reducing bacteria in sustaining the diversity and stability of marine bacterial community |
| topic | sediment seawater network analysis assembly process sulfate-reducing bacteria |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2023.1218828/full |
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