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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.


  
Vertically Distributed Sensing of Deformation Using Fiber Optic Sensing 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (21) : 11732-11741
作者:  Zhang, Cheng-Cheng;  Shi, Bin;  Gu, Kai;  Liu, Su-Ping;  Wu, Jing-Hong;  Zhang, Song;  Zhang, Lei;  Jiang, Hong-Tao;  Wei, Guang-Qing
收藏  |  浏览/下载：6/0  |  提交时间：2019/04/09
Impact of Ningaloo Nino on Tropical Pacific and an Interbasin Coupling Mechanism 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (20) : 11300-11309
作者:  Zhang, Lei;  Han, Weiqing
收藏  |  浏览/下载：4/0  |  提交时间：2019/04/09
Role of North Indian Ocean Air-Sea Interaction in Summer Monsoon Intraseasonal Oscillation 期刊论文
JOURNAL OF CLIMATE, 2018, 31 (19) : 7885-7908
作者:  Zhang, Lei;  Han, Weiqing;  Li, Yuanlong;  Maloney, Eric D.
收藏  |  浏览/下载：2/0  |  提交时间：2019/04/09
Monsoons  Air-sea interaction  Intraseasonal variability  
The Indian Summer Monsoon Intraseasonal Oscillations in CFSv2 Forecasts: Biases and Importance of Improving Air-Sea Interaction Processes 期刊论文
JOURNAL OF CLIMATE, 2018, 31 (14) : 5351-5370
作者:  Li, Yuanlong;  Han, Weiqing;  Wang, Wanqiu;  Zhang, Lei;  Ravichandran, M.
收藏  |  浏览/下载：4/0  |  提交时间：2019/04/09
Monsoons  Sea surface temperature  Air-sea interaction  Forecasting  Intraseasonal variability  
Observational evidence of the downstream impact on tropical rainfall from stratospheric Kelvin waves 期刊论文
CLIMATE DYNAMICS, 2018, 50: 3775-3782
作者:  Zhang, Lei;  Karnauskas, Kristopher B.;  Weiss, Jeffrey B.;  Polvani, Lorenzo M.
收藏  |  浏览/下载：4/0  |  提交时间：2019/04/09
Stratosphere  Kelvin waves  Tropopause  Tropical convection  Sounding observations  Intraseasonal variability  Precipitation