Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Wang, Xudong1,2; Xu, Ting3; Peckmann, Joern4,5; Bayon, Germain6; Jia, Zice1; Gong, Shanggui1; Li, Jie7 ; Cordes, Erik8; Sun, Yanan3; Tao, Jun9; Chen, Duofu1; Feng, Dong1,2
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| Molybdenum isotope signature of microbial nitrogen utilization in siboglinid tubeworms | |
| Source Publication | GEOLOGY
 |
| ISSN | 0091-7613 |
| 2023-07-01 | |
| Volume | 51Issue:7Pages:698-702 |
| DOI | 10.1130/G51077.1 |
| Language | 英语 |
| WOS Research Area | Geology |
| Abstract | 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 ID | WOS:001068779700017 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74829 |
| Collection | 同位素地球化学国家重点实验室 |
| Corresponding Author | Wang, Xudong; Feng, Dong |
| Affiliation | 1.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China 3.Hong Kong Univ Sci & Technol, Div Life Sci, Dept Ocean Sci, Hong Kong, Peoples R China 4.Hong Kong Univ Sci & Technol, Hong Kong Branch, Southern Sci & Engn Guangdong Lab, Hong Kong, Peoples R China 5.Univ Hamburg, Inst Geol, Ctr Earth Syst Res & Sustainabil, D-20146 Hamburg, Germany 6.Univ Brest, CNRS, IFREMER, Geo Ocean, F-29280 Plouzane, France 7.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 8.Temple Univ, Dept Biol, Philadelphia, PA 19122 USA 9.China Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 510070, Peoples R China |
| Recommended Citation 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. |
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