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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：60/0  |  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.


  
Introducing nitrogen-fixing tree species and mixing with Pinus massoniana alters and evenly distributes various chemical compositions of soil organic carbon in a planted forest in southern China 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2019, 449
作者:  Wang, Hui;  Liu, Shirong;  Song, Zhanchao;  Yang, Yujing;  Wang, Jingxin;  You, Yeming;  Zhang, Xiao;  Shi, Zuomin;  Nong, You;  Ming, Angang;  Lu, Lihua;  Cai, Daoxiong
收藏  |  浏览/下载：23/0  |  提交时间：2019/11/27
Litter quality  Organic carbon chemical composition  Planted forests  Soil microbial biomass and diversity  Tree species  
Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2019, 448: 499-508
作者:  Liu, Heming;  Zhou, Guiyao;  Bai, Shahla Hosseini;  Song, Jingjing;  Shang, Yijing;  He, Miao;  Wang, Xihua;  Zheng, Zemei
收藏  |  浏览/下载：13/0  |  提交时间：2019/11/27
Microbial respiration  Fine root biomass  C sequestration  Microbial biomass carbon  Subtropical forests  
Reduced carbon use efficiency and increased microbial turnover with soil warming 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (3) : 900-910
作者:  Li, Jianwei;  Wang, Gangsheng;  Mayes, Melanie A.;  Allison, Steven D.;  Frey, Serita D.;  Shi, Zheng;  Hu, Xiao-Ming;  Luo, Yiqi;  Melillo, Jerry M.
收藏  |  浏览/下载：24/0  |  提交时间：2019/04/09
carbon use efficiency (CUE)  data-model integration  Harvard forest  microbial biomass turnover (rB)  soil warming  temperature sensitivity  
Grazing enhances belowground carbon allocation, microbial biomass, and soil carbon in a subtropical grassland 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (7) : 2997-3009
作者:  Wilson, Chris H.;  Strickland, Michael S.;  Hutchings, Jack A.;  Bianchi, Thomas S.;  Flory, S. Luke
收藏  |  浏览/下载：19/0  |  提交时间：2019/04/09
grasslands  large herbivore grazing  microbial biomass  pulse-chase experiments  root exudation  soil organic carbon  subtropical pasture  
Decomposition of trembling aspen leaf litter under long-term nitrogen and sulfur deposition: Effects of litter chemistry and forest floor microbial properties 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 412: 53-61
作者:  Wang, Qi;  Kwak, Jin-Hyeob;  Choi, Woo-Jung;  Chang, Scott X.
收藏  |  浏览/下载：23/0  |  提交时间：2019/04/09
Atmospheric deposition  Boreal forest  Carbon to nitrogen ratio  Combined nitrogen and sulfur addition  Enzyme activity  Lignin to nitrogen ratio  Microbial biomass  
Prescription side effects: Long-term, high-frequency controlled burning enhances nitrogen availability in an Illinois oak-dominated forest 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 411: 82-89
作者:  Taylor, Quinn A.;  Midgley, Meghan G.
收藏  |  浏览/下载：23/0  |  提交时间：2019/04/09
Stoichiometry  Carbon  Nitrogen  Phosphorous  Enzyme activity  Microbial biomass  Fire  Soil  
Optimal metabolic regulation along resource stoichiometry gradients 期刊论文
ECOLOGY LETTERS, 2017, 20 (9)
作者:  Manzoni, Stefano;  Capek, Petr;  Mooshammer, Maria;  Lindahl, Bjorn D.;  Richter, Andreas;  Santruckova, Hana
收藏  |  浏览/下载：25/0  |  提交时间：2019/04/09
Carbon use efficiency  consumer  ecological stoichiometry  microbial biomass  nitrogen  nutrient limitation  phosphorus  stoichiometric model  
Grazing intensity significantly affects belowground carbon and nitrogen cycling in grassland ecosystems: a meta-analysis 期刊论文
GLOBAL CHANGE BIOLOGY, 2017, 23 (3)
作者:  Zhou, Guiyao;  Zhou, Xuhui;  He, Yanghui;  Shao, Junjiong;  Hu, Zhenhong;  Liu, Ruiqiang;  Zhou, Huimin;  Hosseinibai, Shahla
收藏  |  浏览/下载：18/0  |  提交时间：2019/04/09
carbon sequestration  CO2 emission  heavy grazing  mineralization  soil microbial biomass  
Applying population and community ecology theory to advance understanding of belowground biogeochemistry 期刊论文
ECOLOGY LETTERS, 2017, 20 (2)
作者:  Buchkowski, Robert W.;  Bradford, Mark A.;  Grandy, Andrew Stuart;  Schmitz, Oswald J.;  Wieder, William R.
收藏  |  浏览/下载：18/0  |  提交时间：2019/04/09
Competition  microbial biomass  microbial physiology  nitrogen mineralisation  predation  soil carbon  soil respiration