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

doi:10.1016/j.chemgeo.2023.121617

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海地质与地球化学研究室

	A novel iron biomineralization on basaltic rocks from the Challenger Deep, southern Mariana Trench
	Liu, Shuangquan 2; Peng, Xiaotong 2; Yang, Hao 1,2; Zhang, Xiaodi 2; Qu, Yuangao 2; Li, Jiwei 2; Xu, Hengchao 2; Xie, Tongtong 2
刊名	CHEMICAL GEOLOGY
	2023-09-30
卷号	635 页码:9
关键词	Microbial mineralization Hadal zone Fe-mineralization Goethite Microbial biofilm
ISSN号	0009-2541
DOI	10.1016/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.
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关键词	EXTRACELLULAR POLYMERIC SUBSTANCES ; INFRARED-SPECTROSCOPY ; BACTERIAL FOSSILS ; ESCHERICHIA-COLI ; MICROBIAL MATS ; PRESERVATION ; MICROFOSSILS ; GOETHITE ; MINERALS ; BIOFILMS
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
内容类型	期刊论文
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
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.