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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.


  
Changes in the temperature distribution in the top 150 m of the equatorial Indian Ocean in association with El Nino and monsoon drought 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019, 39 (1) : 31-42
作者:  Roose, Shinto;  Joseph, Porathur V.;  Mohanakumar, K.
收藏  |  浏览/下载：8/0  |  提交时间：2019/04/09
equatorial Indian Ocean  El Nino  Indian monsoon drought  subsurface dipole  
Remote subsurface ocean temperature as a predictor of Atlantic hurricane activity 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (45) : 11460-11464
作者:  Scoccimarro, Enrico;  Bellucci, Alessio;  Storto, Andrea;  Gualdi, Silvio;  Masina, Simona;  Navarra, Antonio
收藏  |  浏览/下载：17/0  |  提交时间：2019/11/27
hurricanes  Atlantic Ocean  seasonal predictions  subsurface ocean  tropical cyclones  
Observational Evidence of Subsurface Chlorophyll Response to Mesoscale Eddies in the North Pacific 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (16) : 8462-8470
作者:  Huang, Jie;  Xu, Fanghua
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
ocean eddies  historical cruise observation  subsurface nitrate distribution  subsurface chlorophyll maximum layer  vertical displacement  North Pacific  
Equatorial Indian Ocean subsurface current variability in an Ocean General Circulation Model 期刊论文
CLIMATE DYNAMICS, 2018, 50: 1705-1717
作者:  Gnanaseelan, C.;  Deshpande, Aditi
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
Equatorial Indian Ocean  Equatorial subsurface current  IOD  El Nino  Wyrtki jet  
Association between mean and interannual equatorial Indian Ocean subsurface temperature bias in a coupled model 期刊论文
CLIMATE DYNAMICS, 2018, 50: 1659-1673
作者:  Srinivas, G.;  Chowdary, Jasti S.;  Gnanaseelan, C.;  Prasad, K. V. S. R.;  Karmakar, Ananya;  Parekh, Anant
收藏  |  浏览/下载：13/0  |  提交时间：2019/04/09
Subsurface temperature  Coupled model  Indian Ocean  La Nina  SST  
Subsurface Nonlinear Dynamical Heating and ENSO Asymmetry 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2017, 44 (24)
作者:  Hayashi, Michiya;  Jin, Fei-Fei
收藏  |  浏览/下载：3/0  |  提交时间：2019/04/09
El Nino-Southern Oscillation  ENSO asymmetry  nonlinear dynamical heating  heat budget analysis  subsurface ocean