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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.


  
Linkages between flow regime, biota, and ecosystem processes: Implications for river restoration 期刊论文
SCIENCE, 2019, 365 (6459) : 1264-+
作者:  Palmer, Margaret;  Ruhi, Albert
收藏  |  浏览/下载：5/0  |  提交时间：2019/11/27
A global perspective on tropical montane rivers 期刊论文
SCIENCE, 2019, 365 (6458) : 1124-1129
作者:  Encalada, Andrea C.;  Flecker, Alexander S.;  Poff, N. LeRoy;  Suarez, Esteban;  Herrera-R, Guido A.;  Rios-Touma, Blanca;  Jumani, Suman;  Larson, Erin I.;  Anderson, Elizabeth P.
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/27
Kilauea lava fuels phytoplankton bloom in the North Pacific Ocean 期刊论文
SCIENCE, 2019, 365 (6457) : 1040-+
作者:  Wilson, Samuel T.;  Hawco, Nicholas J.;  Armbrust, E. Virginia;  Barone, Benedetto;  Bjorkman, Karin M.;  Boysen, Angela K.;  Burgos, Macarena;  Burrell, Timothy J.;  Casey, John R.;  DeLong, Edward F.;  Dugenne, Mathilde;  Dutkiewicz, Stephanie;  Dyhrman, Sonya T.;  Ferron, Sara;  Follows, Michael J.;  Foreman, Rhea K.;  Funkey, Carolina P.;  Harke, Matthew J.;  Henke, Britt A.;  Hill, Christopher N.;  Hynes, Annette M.;  Ingalls, Anitra E.;  Jahn, Oliver;  Kelly, Rachel L.;  Knapp, Angela N.;  Letelier, Ricardo M.;  Ribalet, Francois;  Shimabukuro, Eric M.;  Tabata, Ryan K. S.;  Turk-Kubo, Kendra A.;  White, Angelicque E.;  Zehr, Jonathan P.;  John, Seth;  Karl, David M.
收藏  |  浏览/下载：13/0  |  提交时间：2019/11/27
Programmable CRISPR-responsive smart materials 期刊论文
SCIENCE, 2019, 365 (6455) : 780-+
作者:  English, Max A.;  Soenksen, Luis R.;  Gayet, Raphael V.;  de Puig, Helena;  Angenent-Mari, Nicolaas M.;  Mao, Angelo S.;  Nguyen, Peter Q.;  Collins, James J.
收藏  |  浏览/下载：13/0  |  提交时间：2019/11/27
NADPH-dependent extracellular superoxide production is vital to photophysiology in the marine diatom Thalassiosira oceanica 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (33) : 16448-16453
作者:  Diaz, Julia M.;  Plummer, Sydney;  Hansel, Colleen M.;  Andeer, Peter F.;  Saito, Mak A.;  McIlvin, Matthew R.
收藏  |  浏览/下载：7/0  |  提交时间：2019/11/27
reactive oxygen species  photosynthesis  oxidative stress  biogeochemistry  
Photosynthetic adaptation to low iron, light, and temperature in Southern Ocean phytoplankton 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (10) : 4388-4393
作者:  Strzepek, Robert F.;  Boyd, Philip W.;  Sunda, William G.
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
iron  light  temperature  Southern Ocean  phytoplankton  
Shallow particulate organic carbon regeneration in the South Pacific Ocean 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (20) : 9753-9758
作者:  Pavia, Frank J.;  Anderson, Robert F.;  Lam, Phoebe J.;  Cael, B. B.;  Vivancos, Sebastian M.;  Fleisher, Martin Q.;  Lu, Yanbin;  Zhang, Pu;  Cheng, Hai;  Edwards, R. Lawrence
收藏  |  浏览/下载：12/0  |  提交时间：2019/11/27
biological pump  ocean carbon storage  oxygen-deficient zones  GEOTRACES  thorium  
Anthropogenic and biogenic CO2 fluxes in the Boston urban region 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (29) : 7491-7496
作者:  Sargent, Maryann;  Barrera, Yanina;  Nehrkorn, Thomas;  Hutyra, Lucy R.;  Gately, Conor K.;  Jones, Taylor;  McKain, Kathryn;  Sweeney, Colm;  Hegarty, Jennifer;  Hardiman, Brady;  Wofsy, Steven C.
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/27
greenhouse gas emissions  inverse modeling  carbon dioxide  biogenic fluxes  
Thallium isotopes reveal protracted anoxia during the Toarcian (Early Jurassic) associated with volcanism, carbon burial, and mass extinction 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (26) : 6596-6601
作者:  Them, Theodore R., II;  Gill, Benjamin C.;  Caruthers, Andrew H.;  Gerhardt, Angela M.;  Grocke, Darren R.;  Lyons, Timothy W.;  Marroquin, Selva M.;  Nielsen, Sune G.;  Alexandre, Joao P. Trabucho;  Owens, Jeremy D.
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/27
Toarcian Oceanic Anoxic Event  Early Jurassic  thallium isotopes  carbon isotope excursion  large igneous province