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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.


  
The stoichiometry of soil microbial biomass determines metabolic quotient of nitrogen mineralization 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2020, 15 (3)
作者:  Li, Zhaolei;  Zeng, Zhaoqi;  Tian, Dashuan;  Wang, Jinsong;  Fu, Zheng;  Wang, Bingxue;  Tang, Ze;  Chen, Weinan;  Chen, Han Y. H.;  Wang, Changhui;  Yi, Chuixiang;  Niu, Shuli
收藏  |  浏览/下载：23/0  |  提交时间：2020/07/02
dominant driver  global warming  metabolic quotient  natural ecosystems  nitrogen cycling  stoichiometry of microbial biomass  
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：13/0  |  提交时间：2019/11/27
Litter quality  Organic carbon chemical composition  Planted forests  Soil microbial biomass and diversity  Tree species  
Nitrogen addition effects on tree growth and soil properties mediated by soil phosphorus availability and tree species identity 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2019, 449
作者:  Zhao, Qiong;  Zeng, De-Hui
收藏  |  浏览/下载：14/0  |  提交时间：2019/11/27
Nitrogen addition  Phosphorus addition  Pious sylvestris var. mongolica  Populus simonii  Soil microbial biomass  Nutrient availability  
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：7/0  |  提交时间：2019/11/27
Microbial respiration  Fine root biomass  C sequestration  Microbial biomass carbon  Subtropical forests  
Temperature sensitivity of biomass-specific microbial exo-enzyme activities and CO2 efflux is resistant to change across short- and long-term timescales 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (5) : 1793-1807
作者:  Min, Kyungjin;  Buckeridge, Kate;  Ziegler, Susan E.;  Edwards, Kate A.;  Bagchi, Samik;  Billings, Sharon A.
收藏  |  浏览/下载：5/0  |  提交时间：2019/11/26
activation energy  microbial adaptation  microbial biomass  microbial community structure  microbial resilience  microbial resistance  Q(10)  soil warming  
Plant diversity loss reduces soil respiration across terrestrial ecosystems 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (4) : 1482-1492
作者:  Chen, Xinli;  Chen, Han Y. H.
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
heterotrophic respiration  litter diversity  richness  soil microbial biomass  stand age  
Microbes drive global soil nitrogen mineralization and availability 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (3) : 1078-1088
作者:  Li, Zhaolei;  Tian, Dashuan;  Wang, Bingxue;  Wang, Jinsong;  Wang, Song;  Chen, Han Y. H.;  Xu, Xiaofeng;  Wang, Changhui;  He, Nianpeng;  Niu, Shuli
收藏  |  浏览/下载：16/0  |  提交时间：2019/04/09
croplands  dominant factor  microbial biomass  natural ecosystems  nitrogen availability  nitrogen mineralization  soil properties  
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：9/0  |  提交时间：2019/04/09
carbon use efficiency (CUE)  data-model integration  Harvard forest  microbial biomass turnover (rB)  soil warming  temperature sensitivity  
Mycorrhizal associations differentiate soil respiration in five temperate monocultures in Northeast China 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 430: 78-85
作者:  Wang, Xinqi;  Wang, Chuankuan
收藏  |  浏览/下载：4/0  |  提交时间：2019/04/09
Arbuscular mycorrhizae  Ectomycorrhizae  Tree species  Soil CO2 flux  Common garden  Microbial biomass