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Recycling and metabolic flexibility dictate life in the lower oceanic crust 期刊论文
NATURE, 2020, 579 (7798) : 250-+
作者:  Zhou, Peng;  Yang, Xing-Lou;  Wang, Xian-Guang;  Hu, Ben;  Zhang, Lei;  Zhang, Wei;  Si, Hao-Rui;  Zhu, Yan;  Li, Bei;  Huang, Chao-Lin;  Chen, Hui-Dong;  Chen, Jing;  Luo, Yun;  Guo, Hua;  Jiang, Ren-Di;  Liu, Mei-Qin;  Chen, Ying;  Shen, Xu-Rui;  Wang, Xi;  Zheng, Xiao-Shuang;  Zhao, Kai;  Chen, Quan-Jiao;  Deng, Fei;  Liu, Lin-Lin;  Yan, Bing;  Zhan, Fa-Xian;  Wang, Yan-Yi;  Xiao, Geng-Fu;  Shi, Zheng-Li
收藏  |  浏览/下载：37/0  |  提交时间：2020/05/13

The lithified lower oceanic crust is one of Earth'  s last biological frontiers as it is difficult to access. It is challenging for microbiota that live in marine subsurface sediments or igneous basement to obtain sufficient carbon resources and energy to support growth(1-3) or to meet basal power requirements(4) during periods of resource scarcity. Here we show how limited and unpredictable sources of carbon and energy dictate survival strategies used by low-biomass microbial communities that live 10-750 m below the seafloor at Atlantis Bank, Indian Ocean, where Earth'  s lower crust is exposed at the seafloor. Assays of enzyme activities, lipid biomarkers, marker genes and microscopy indicate heterogeneously distributed and viable biomass with ultralow cell densities (fewer than 2,000 cells per cm(3)). Expression of genes involved in unexpected heterotrophic processes includes those with a role in the degradation of polyaromatic hydrocarbons, use of polyhydroxyalkanoates as carbon-storage molecules and recycling of amino acids to produce compounds that can participate in redox reactions and energy production. Our study provides insights into how microorganisms in the plutonic crust are able to survive within fractures or porous substrates by coupling sources of energy to organic and inorganic carbon resources that are probably delivered through the circulation of subseafloor fluids or seawater.


  
白垩纪大洋缺氧事件期间南半球高纬度地区的沉积物源-汇过程及其古环境指示意义 项目
项目编号：41876034； 经费：650000(CNY)； 起止日期：2019 / dc_date_end
项目负责人:  徐兆凯
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
A balance between aerodynamic and olfactory performance during flight in Drosophila 期刊论文
NATURE COMMUNICATIONS, 2018, 9
作者:  Li, Chengyu;  Dong, Haibo;  Zhao, Kai
收藏  |  浏览/下载：5/0  |  提交时间：2019/11/27
基于多频段电磁波传播特性的森林枯枝落叶层参量反演方法研究 项目
项目编号：41771400； 经费：630000(CNY)； 起止日期：2018 / dc_date_end
项目负责人:  赵凯
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
Rapid migration of a magma source from mid- to deep-crustal levels: Insights from restitic granulite enclaves and anatectic granite 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2017, 129
作者:  Zhao, Kai;  Xu, Xisheng;  Erdmann, Saskia;  Liu, Lei;  Xia, Yan
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/09
上新世以来轨道-亚轨道时间尺度上喜马拉雅山西部地区的风化剥蚀作用及其对印度夏季风的响应 项目
项目编号：41676038； 经费：700000(CNY)； 起止日期：2017 / dc_date_end
项目负责人:  徐兆凯
收藏  |  浏览/下载：6/0  |  提交时间：2019/04/11
上行离子源区分布与极尖区三维位形的关系研究 项目
项目编号：41604134； 经费：200000(CNY)； 起止日期：2017 / dc_date_end
项目负责人:  赵凯
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/11