题名: Archive of bacterial community in anhydrite crystals from a deep-sea basin provides evidence of past oil-spilling in a benthic environment in the Red Sea
作者: Wang, Yong1,2; Li, Tie Gang3,4; Wang, Meng Ying1; Lai, Qi Liang5; Li, Jiang Tao6; Gao, Zhao Ming1; Shao, Zong Ze5; Qian, Pei-Yuan2
刊名: BIOGEOSCIENCES
出版日期: 2016-11-30
卷号: 13, 期号:23, 页码:6405-6417
英文摘要: In deep-sea sediment, the microbes present in anhydrite crystals are potential markers of the past environment. In the Atlantis II Deep, anhydrite veins were produced by mild mixture of calcium-rich hydrothermal solutions and sulfate in the bottom water, which had probably preserved microbial inhabitants in the past seafloor of the Red Sea. In this study, this hypothesis was tested by analyzing the metagenome of an anhydrite crystal sample from the Atlantis II Deep. The estimated age of the anhydrite layer was between 750 and 770 years, which might span the event of hydrothermal eruption into the benthic floor. The 16S/18S rRNA genes in the metagenome were assigned to bacteria, archaea, fungi and even invertebrate species. The dominant species in the crystals was an oil-degrading Alcanivorax borkumensis bacterium, which was not detected in the adjacent sediment layer. Fluorescence microscopy using 16S rRNA and marker gene probes revealed intact cells of the Alcanivorax bacterium in the crystals. A draft genome of A. borkumensis was binned from the metagenome. It contained all functional genes for alkane utilization and the reduction of nitrogen oxides. Moreover, the metagenomes of the anhydrites and control sediment contained aromatic degradation pathways, which were mostly derived from Ochrobactrum sp. Altogether, these results indicate an oxic, oil-spilling benthic environment in the Atlantis II basin of the Red Sea in approximately the 14th century. The original microbial inhabitants probably underwent a dramatic selection process via drastic environmental changes following the formation of an overlying anoxic brine pool in the basin due to hydrothermal activities.
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Ecology ; Geosciences, Multidisciplinary
关键词[WOS]: ATLANTIS-II DEEP ; DNA-DNA HYBRIDIZATION ; ALCANIVORAX-BORKUMENSIS ; GENOME SEQUENCE ; METALLIFEROUS SEDIMENT ; SUBSEAFLOOR SEDIMENTS ; MARINE BACTERIUM ; GEN. NOV. ; DEPOSITION ; MODELS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000389211000002
Citation statistics:
内容类型: 期刊论文
URI标识: [http://ir.idsse.ac.cn/handle/183446/1674]  
Appears in Collections:深海科学与工程研究所_深海科学研究部_深海生物学研究室_海洋微生物宏基因组与分子进化研究组_期刊论文


作者单位: 1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, San Ya, Peoples R China
2.Hong Kong Univ Sci & Technol, Div Life Sci, Hong Kong, Hong Kong, Peoples R China
3.SOA, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
5.SOA, Inst Oceanog 3, Key Lab Marine Biogenet Resources, Xiamen, Peoples R China
6.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China
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