Molybdenum isotope signature of microbial nitrogen utilization in siboglinid tubeworms
文献类型：期刊论文
| 作者 | Wang, Xudong6,7; Xu, Ting8; Peckmann, Joern1,9; Bayon, Germain2; Jia, Zice6; Gong, Shanggui6; Li, Jie4 ; Cordes, Erik3; Sun, Yanan8; Tao, Jun5
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| 刊名 | GEOLOGY
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| 出版日期 | 2023-07-01 |
| 卷号 | 51期号:7页码:698-702 |
| ISSN号 | 0091-7613 |
| DOI | 10.1130/G51077.1 |
| 英文摘要 | Many chemosynthesis-based communities prospering in deep-sea environments rely on the metabolic activity of sulfide-oxidizing bacteria. This is the case for vestimentiferan siboglinid tubeworms, whose demand for nutrition is satisfied predominantly by their endosymbiotic bacteria harbored in a specialized organ called the trophosome. Such chemosymbiosis leads to a significantly lower nitrogen isotope composition of the trophosome than in other types of soft tissue. However, the specific process of nitrogen utilization by siboglinids remains unclear. As a key element in the relevant enzymes (nitrogenase and nitrate reductase), molybdenum (Mo) is indispensable in the biogeochemical cycling of nitrogen. The Mo isotope composition (delta Mo-98) of siboglinids is thus a potential proxy for decoding the processes involved in nitrogen metabolism. In this study, we found delta Mo-98 values along the chitinous tube of the vestimentiferan siboglinid Paraescarpia echinospica from the Haima seeps of the South China Sea as negative as -4.59 parts per thousand (-1.13 parts per thousand +/- 1.75 parts per thousand, 1SD, n = 19)-the lowest delta Mo-98 value ever reported for any kind of natural material. It is suggested that this extremely negative Mo isotope composition is caused by preferential utilization of isotopically light Mo by the tubeworm's endosymbionts or epibionts during nitrate reduction. Such Mo isotope signature could provide a means for identifying siboglinid tubeworms, a group of annelids that has previously escaped unambiguous identification due to the lack of mineralized skeleton, in the rock record. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001068779700017 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74828]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Wang, Xudong; Feng, Dong |
| 作者单位 | 1.Univ Hamburg, Inst Geol, Ctr Earth Syst Res & Sustainabil, D-20146 Hamburg, Germany 2.Univ Brest, CNRS, IFREMER, Geo Ocean, F-29280 Plouzane, France 3.Temple Univ, Dept Biol, Philadelphia, PA 19122 USA 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 5.China Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 510070, Peoples R China 6.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China 7.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China 8.Hong Kong Univ Sci & Technol, Div Life Sci, Dept Ocean Sci, Hong Kong, Peoples R China 9.Hong Kong Univ Sci & Technol, Hong Kong Branch, Southern Sci & Engn Guangdong Lab, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xudong,Xu, Ting,Peckmann, Joern,et al. Molybdenum isotope signature of microbial nitrogen utilization in siboglinid tubeworms[J]. GEOLOGY,2023,51(7):698-702. |
| APA | Wang, Xudong.,Xu, Ting.,Peckmann, Joern.,Bayon, Germain.,Jia, Zice.,...&Feng, Dong.(2023).Molybdenum isotope signature of microbial nitrogen utilization in siboglinid tubeworms.GEOLOGY,51(7),698-702. |
| MLA | Wang, Xudong,et al."Molybdenum isotope signature of microbial nitrogen utilization in siboglinid tubeworms".GEOLOGY 51.7(2023):698-702. |
入库方式： OAI收割
来源：广州地球化学研究所
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