Magnetotaxis as an Adaptation to Enable Bacterial Shuttling of Microbial Sulfur and Sulfur Cycling Across Aquatic Oxic-Anoxic Interfaces
文献类型：期刊论文
| 作者 | Li, Jinhua1,2,3; Liu, Peiyu1,2,3,4; Wang, Jian5; Roberts, Andrew P.6; Pan, Yongxin1,2,3,4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 125期号:12页码:17 |
| 关键词 | oxic‐ anoxic interface microbial sulfur cycle magnetotaxis vacuoles sulfur globules magnetotactic bacteria |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2020JG006012 |
| 英文摘要 | Magnetotactic bacteria (MTB) widely inhabit the oxic-anoxic interface (OAI) of sediments and water columns, with their motility guided by geomagnetic fields (a behavior known as magnetotaxis). Beside biomineralizing membrane-enveloped magnetite or greigite nanocrystals called magnetosomes, cells of many MTB groups contain numerous sulfur globules within their cells. Here, by combining transmission electron microscopy and synchrotron-based scanning transmission X-ray microscopy, we investigated the cellular structure and chemistry of Candidatus Magnetobacterium casensis (Mcas), a giant rod-shaped MTB from the Nitrospirae phylum. We find that nitrate-storing vacuoles and linearly polymeric sulfur globules occur exclusively within some Mcas cells along with magnetosomal magnetite. Genomic prediction indicates that Mcas cells have the potential to oxidize sulfide to sulfate (i.e., S2- -> S-0 -> SO32- -> SO42-), to reduce sulfate to sulfide (i.e., SO42- -> SO32- -> S2-), and to reduce nitrate to NH4+/N-2. Together with previous environmental observations, comparative genomic analysis allows us to propose a model for Mcas involving the microbial sulfur cycle across aquatic OAIs based on magnetotaxis. Via directional movement guided by geomagnetic fields, Mcas cells shuttle either upward to upper microoxic zones for sulfur oxidation and nitrate accumulation in the OAI, or downward to deeper anoxic zones for sulfur deposition by coupling sulfide oxidation and nitrate reduction. Development of magnetotaxis makes MTB an efficient bacterial shuttle for C, N, S, and Fe across aquatic OAI environments and likely contributes significantly to their global biogeochemical cycling. It also benefits cell growth and magnetosomal magnetite formation in MTB. |
| WOS关键词 | RAY-ABSORPTION SPECTROSCOPY ; INDEPENDENT CHARACTERIZATION ; CANDIDATUS MAGNETOBACTERIUM ; MAGNETIC-PROPERTIES ; MARINE ; GLOBULES ; NITRATE ; MAGNETOSOMES ; DIVERSITY ; REVEALS |
| 资助项目 | National Natural Science Foundation of China[41920104009] ; National Natural Science Foundation of China[41890843] ; National Natural Science Foundation of China[41621004] ; Center for Ocean Mega-Science, Chinese Academy of Sciences[RVKEXUE2019GZ06] ; Australian Research Council[DP160100805] ; Natural Sciences and Engineering Research Council of Canada ; National Research Council Canada ; Canadian Institutes of Health Research ; Province of Saskatchewan ; Western Economic Diversification Canada ; University of Saskatchewan |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000603282000006 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Australian Research Council ; Australian Research Council ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; National Research Council Canada ; National Research Council Canada ; Canadian Institutes of Health Research ; Canadian Institutes of Health Research ; Province of Saskatchewan ; Province of Saskatchewan ; Western Economic Diversification Canada ; Western Economic Diversification Canada ; University of Saskatchewan ; University of Saskatchewan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Australian Research Council ; Australian Research Council ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; National Research Council Canada ; National Research Council Canada ; Canadian Institutes of Health Research ; Canadian Institutes of Health Research ; Province of Saskatchewan ; Province of Saskatchewan ; Western Economic Diversification Canada ; Western Economic Diversification Canada ; University of Saskatchewan ; University of Saskatchewan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Australian Research Council ; Australian Research Council ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; National Research Council Canada ; National Research Council Canada ; Canadian Institutes of Health Research ; Canadian Institutes of Health Research ; Province of Saskatchewan ; Province of Saskatchewan ; Western Economic Diversification Canada ; Western Economic Diversification Canada ; University of Saskatchewan ; University of Saskatchewan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Center for Ocean Mega-Science, Chinese Academy of Sciences ; Australian Research Council ; Australian Research Council ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; National Research Council Canada ; National Research Council Canada ; Canadian Institutes of Health Research ; Canadian Institutes of Health Research ; Province of Saskatchewan ; Province of Saskatchewan ; Western Economic Diversification Canada ; Western Economic Diversification Canada ; University of Saskatchewan ; University of Saskatchewan |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/99971]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Li, Jinhua |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 3.Chinese Acad Sci, France China Joint Lab Evolut & Dev Magnetotact M, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 5.Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK, Canada 6.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia |
| 推荐引用方式 GB/T 7714 | Li, Jinhua,Liu, Peiyu,Wang, Jian,et al. Magnetotaxis as an Adaptation to Enable Bacterial Shuttling of Microbial Sulfur and Sulfur Cycling Across Aquatic Oxic-Anoxic Interfaces[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(12):17. |
| APA | Li, Jinhua,Liu, Peiyu,Wang, Jian,Roberts, Andrew P.,&Pan, Yongxin.(2020).Magnetotaxis as an Adaptation to Enable Bacterial Shuttling of Microbial Sulfur and Sulfur Cycling Across Aquatic Oxic-Anoxic Interfaces.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(12),17. |
| MLA | Li, Jinhua,et al."Magnetotaxis as an Adaptation to Enable Bacterial Shuttling of Microbial Sulfur and Sulfur Cycling Across Aquatic Oxic-Anoxic Interfaces".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.12(2020):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
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