IOCAS-IR  > 实验海洋生物学重点实验室
Community Structure of Bacteria Associated With Drifting Sargassum horneri, the Causative Species of Golden Tide in the Yellow Sea
Mei, Xiangyuan1,2,3,4; Wu, Chunhui1,2,3; Zhao, Jin1,2,3; Yan, Tian3,5,6; Jiang, Peng1,2,3
2019-05-28
Source PublicationFRONTIERS IN MICROBIOLOGY
ISSN1664-302X
Volume10Pages:17
Corresponding AuthorJiang, Peng(jiangpeng@qdio.ac.cn)
AbstractGolden tides dominated by Sargassum spp. are occurring at an accelerated rate worldwide. In China, Sargassum has started to bloom in the Yellow Sea and led to tremendous economic losses, but the underlying biological causes and mechanisms are still unclear. Although algae-associated bacteria were suggested to play crucial roles in algal blooms, the profiles of bacteria associated with drifting Sargassum remain unexplored. In this study, the community structures and functions of Sargassum-associated bacteria were analyzed using the high-throughput sequencing data of the V5-V7 hypervariable region of the 16S rRNA gene. Molecular identification revealed that the golden tide analyzed in the Yellow Sea was dominated by a single species, Sargassum horneri. They were a healthy brown color nearshore but were yellow offshore with significantly decreased chlorophyll contents (P < 0.01), which indicates that yellow S. horneri was under physiological stress. The structural and functional analyses of bacterial communities indicated that the drifting S. horneri had an obvious selectivity on their associated bacteria against surrounding seawater. Although the bacterial communities phylogenetically differed between brown and yellow S. horneri (P < 0.01), their dominant functions were all nitrogen and iron transporters, which strongly indicates microbial contribution to blooming of the algal host. For the first time, potential epiphytic and endophytic bacteria associated with Sargassum were independently analyzed by a modified co-vortex method with silica sand. We showed that the composition of dominant endophytes, mainly Bacillus and Propionibacterium, was relatively consistent regardless of host status, whereas the epiphytic operational taxonomic units (OTUs) greatly varied in response to weakness of host status; however, dominant functions were consistent at elevated intensities, which might protect the host from stress related to nitrogen or iron deficiency. Thus, we propose that host physiological status at different intensities of functional demands, which were related to variable environmental conditions, may be a critical factor that influences the assembly of epiphytic bacterial communities. This study provided new insight into the structure and potential functions of associated bacteria with golden tide blooms.
Keyword16S rRNA gene high-throughput sequencing bacterial community golden tide Sargassum horneri the Yellow Sea
DOI10.3389/fmicb.2019.01192
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA23050302] ; National Natural Science Foundation of China[41776153] ; Open Fund of Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology[LMEES201801] ; Open Fund of Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0303] ; Marine S&T Fund of Shandong Province[2018SDKJ050404] ; Nantong Municipal Science and Technology Project[MS12017019-4]
WOS Research AreaMicrobiology
WOS SubjectMicrobiology
WOS IDWOS:000469262300001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/161563
Collection实验海洋生物学重点实验室
海洋生态与环境科学重点实验室
Corresponding AuthorJiang, Peng
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, Qingdao, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China
6.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Mei, Xiangyuan,Wu, Chunhui,Zhao, Jin,et al. Community Structure of Bacteria Associated With Drifting Sargassum horneri, the Causative Species of Golden Tide in the Yellow Sea[J]. FRONTIERS IN MICROBIOLOGY,2019,10:17.
APA Mei, Xiangyuan,Wu, Chunhui,Zhao, Jin,Yan, Tian,&Jiang, Peng.(2019).Community Structure of Bacteria Associated With Drifting Sargassum horneri, the Causative Species of Golden Tide in the Yellow Sea.FRONTIERS IN MICROBIOLOGY,10,17.
MLA Mei, Xiangyuan,et al."Community Structure of Bacteria Associated With Drifting Sargassum horneri, the Causative Species of Golden Tide in the Yellow Sea".FRONTIERS IN MICROBIOLOGY 10(2019):17.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Mei, Xiangyuan]'s Articles
[Wu, Chunhui]'s Articles
[Zhao, Jin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Mei, Xiangyuan]'s Articles
[Wu, Chunhui]'s Articles
[Zhao, Jin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Mei, Xiangyuan]'s Articles
[Wu, Chunhui]'s Articles
[Zhao, Jin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.