Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc
Abstract Seamounts are undersea mountains rising abruptly from the sea floor and interacting dynamically with underwater currents. They represent unique biological habitats with various microbial community structures. Certain seamount bacteria form conspicuous extracellular iron oxide structures, in...
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oai:doaj.org-article:4f7a03a4cccf497fbb032d9f4d042ed52021-12-02T15:05:32ZBacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc10.1038/s41598-017-17445-42045-2322https://doaj.org/article/4f7a03a4cccf497fbb032d9f4d042ed52017-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-17445-4https://doaj.org/toc/2045-2322Abstract Seamounts are undersea mountains rising abruptly from the sea floor and interacting dynamically with underwater currents. They represent unique biological habitats with various microbial community structures. Certain seamount bacteria form conspicuous extracellular iron oxide structures, including encrusted stalks, flattened bifurcating tubes, and filamentous sheaths. To extend our knowledge of seamount ecosystems, we performed an integrated study on population structure and the occurrence of magnetotactic bacteria (MTB) that synthesize intracellular iron oxide nanocrystals in sediments of a seamount in the Mariana volcanic arc. We found Proteobacteria dominant at 13 of 14 stations, but ranked second in abundance to members of the phylum Firmicutes at the deep-water station located on a steep slope facing the Mariana-Yap Trench. Live MTB dwell in biogenic sediments from all 14 stations ranging in depth from 238 to 2,023 m. Some magnetotactic cocci possess the most complex flagellar apparatus yet reported; 19 flagella are arranged in a 3:4:5:4:3 array within a flagellar bundle. Phylogenetic analysis of 16S rRNA gene sequences identified 16 novel species of MTB specific to this seamount. Together the results obtained indicate that geographic properties of the seamount stations are important in shaping the bacterial community structure and the MTB composition.Jia LiuWenyan ZhangXuegong LiXuegang LiXumiao ChenJin-Hua LiZhaojie TengCong XuClaire-Lise SantiniLi ZhaoYuan ZhaoHeng ZhangWei-Jia ZhangKuidong XuChaolun LiYongxin PanTian XiaoHongmiao PanLong-Fei WuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017) |
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Medicine R Science Q Jia Liu Wenyan Zhang Xuegong Li Xuegang Li Xumiao Chen Jin-Hua Li Zhaojie Teng Cong Xu Claire-Lise Santini Li Zhao Yuan Zhao Heng Zhang Wei-Jia Zhang Kuidong Xu Chaolun Li Yongxin Pan Tian Xiao Hongmiao Pan Long-Fei Wu Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc |
| description |
Abstract Seamounts are undersea mountains rising abruptly from the sea floor and interacting dynamically with underwater currents. They represent unique biological habitats with various microbial community structures. Certain seamount bacteria form conspicuous extracellular iron oxide structures, including encrusted stalks, flattened bifurcating tubes, and filamentous sheaths. To extend our knowledge of seamount ecosystems, we performed an integrated study on population structure and the occurrence of magnetotactic bacteria (MTB) that synthesize intracellular iron oxide nanocrystals in sediments of a seamount in the Mariana volcanic arc. We found Proteobacteria dominant at 13 of 14 stations, but ranked second in abundance to members of the phylum Firmicutes at the deep-water station located on a steep slope facing the Mariana-Yap Trench. Live MTB dwell in biogenic sediments from all 14 stations ranging in depth from 238 to 2,023 m. Some magnetotactic cocci possess the most complex flagellar apparatus yet reported; 19 flagella are arranged in a 3:4:5:4:3 array within a flagellar bundle. Phylogenetic analysis of 16S rRNA gene sequences identified 16 novel species of MTB specific to this seamount. Together the results obtained indicate that geographic properties of the seamount stations are important in shaping the bacterial community structure and the MTB composition. |
| format |
article |
| author |
Jia Liu Wenyan Zhang Xuegong Li Xuegang Li Xumiao Chen Jin-Hua Li Zhaojie Teng Cong Xu Claire-Lise Santini Li Zhao Yuan Zhao Heng Zhang Wei-Jia Zhang Kuidong Xu Chaolun Li Yongxin Pan Tian Xiao Hongmiao Pan Long-Fei Wu |
| author_facet |
Jia Liu Wenyan Zhang Xuegong Li Xuegang Li Xumiao Chen Jin-Hua Li Zhaojie Teng Cong Xu Claire-Lise Santini Li Zhao Yuan Zhao Heng Zhang Wei-Jia Zhang Kuidong Xu Chaolun Li Yongxin Pan Tian Xiao Hongmiao Pan Long-Fei Wu |
| author_sort |
Jia Liu |
| title |
Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc |
| title_short |
Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc |
| title_full |
Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc |
| title_fullStr |
Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc |
| title_full_unstemmed |
Bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the Mariana volcanic arc |
| title_sort |
bacterial community structure and novel species of magnetotactic bacteria in sediments from a seamount in the mariana volcanic arc |
| publisher |
Nature Portfolio |
| publishDate |
2017 |
| url |
https://doaj.org/article/4f7a03a4cccf497fbb032d9f4d042ed5 |
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