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A novel iron biomineralization on basaltic rocks from the Challenger Deep, southern Mariana Trench

文献类型：期刊论文

作者Liu, Shuangquan2; Peng, Xiaotong2; Yang, Hao1,2; Zhang, Xiaodi2; Qu, Yuangao2; Li, Jiwei2; Xu, Hengchao2; Xie, Tongtong2
刊名CHEMICAL GEOLOGY
出版日期2023-09-30
卷号635页码:9
ISSN号0009-2541
关键词Microbial mineralization Hadal zone Fe-mineralization Goethite Microbial biofilm
DOI10.1016/j.chemgeo.2023.121617
通讯作者Peng, Xiaotong(xtpeng@idsse.ac.cn)
英文摘要The habitability of the hadal zone is not well understood and how microbes survive and adapt to this extreme environment is still largely unknown. Here we report the discovery of microbial biofilm that experience extensive Fe-mineralization on the surface of rocks from the Challenger Deep in the southern Mariana Trench. We found microbial biofilms of abundant globules internally permineralized by acicular goethite. The EDS analyses, combined with SEM and TEM, show that the globules are enriched in carbon and phosphorus, potentially indicating their biological origin. Cross sections of globules reveal a bilayer structure consisting of an acicular nano-crystalline core and a colloidal envelope. Vibrational spectroscopy reveals that this colloidal envelope is composed of EPS (extracellular polymeric substances). This mineralization is completely different from Femineralization induced by all other known Fe-oxidizing bacteria, suggesting previously unknown interactions between Fe and microorganisms in hadal settings. Our findings highlight the significance of Fe-mineralization and its contributions to the ecosystem in hadal environments.
WOS关键词EXTRACELLULAR POLYMERIC SUBSTANCES ; INFRARED-SPECTROSCOPY ; BACTERIAL FOSSILS ; ESCHERICHIA-COLI ; MICROBIAL MATS ; PRESERVATION ; MICROFOSSILS ; GOETHITE ; MINERALS ; BIOFILMS
资助项目National Key R amp; D Program of China[2022YFC2805400] ; Hadal Science and Technology Program[183446KYSB20210002] ; Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City[2021JJLH0049]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:001034816400001
资助机构National Key R amp; D Program of China ; Hadal Science and Technology Program ; Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City
源URL[http://ir.idsse.ac.cn/handle/183446/10408]  
专题深海科学研究部_深海地质与地球化学研究室
专家咨询委员会
通讯作者Peng, Xiaotong
作者单位1.Hainan Univ, Coll Marine Sci, Haikou 570228, Peoples R China
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Shuangquan,Peng, Xiaotong,Yang, Hao,et al. A novel iron biomineralization on basaltic rocks from the Challenger Deep, southern Mariana Trench[J]. CHEMICAL GEOLOGY,2023,635:9.
APA Liu, Shuangquan.,Peng, Xiaotong.,Yang, Hao.,Zhang, Xiaodi.,Qu, Yuangao.,...&Xie, Tongtong.(2023).A novel iron biomineralization on basaltic rocks from the Challenger Deep, southern Mariana Trench.CHEMICAL GEOLOGY,635,9.
MLA Liu, Shuangquan,et al."A novel iron biomineralization on basaltic rocks from the Challenger Deep, southern Mariana Trench".CHEMICAL GEOLOGY 635(2023):9.

入库方式： OAI收割

来源：深海科学与工程研究所

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