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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.


  
Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (10) : 3438-3449
作者:  Li, Yaoming;  Lv, Wangwang;  Jiang, Lili;  Zhang, Lirong;  Wang, Shiping;  Wang, Qi;  Xue, Kai;  Li, Bowen;  Liu, Peipei;  Hong, Huan;  Renzen, Wangmu;  Wang, A.;  Luo, Caiyun;  Zhang, Zhenhua;  Dorji, Tsechoe;  Tas, Neslihan;  Wang, Zhezhen;  Zhou, Huakun;  Wang, Yanfen
收藏  |  浏览/下载：12/0  |  提交时间：2019/11/27
labile carbon limitation  microbial community response  soil heterotrophic respiration  soil incubation  soil respiration acclimation  
CO2 emissions from an undrained tropical peatland: Interacting influences of temperature, shading and water table depth 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (9) : 2885-2899
作者:  Hoyt, Alison M.;  Gandois, Laure;  Eri, Jangarun;  Kai, Fuu Ming;  Harvey, Charles F.;  Cobb, Alexander R.
收藏  |  浏览/下载：7/0  |  提交时间：2019/11/27
closed dynamic chamber technique  CO2 flux  diurnal cycle  heterotrophic respiration  soil temperature  Southeast Asia  tropical peatland  
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  
Soil organic carbon stability in forests: Distinct effects of tree species identity and traits 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (4) : 1529-1546
作者:  Angst, Gerrit;  Mueller, Kevin E.;  Eissenstat, David M.;  Trumbore, Susan;  Freeman, Katherine H.;  Hobbie, Sarah E.;  Chorover, Jon;  Oleksyn, Jacek;  Reich, Peter B.;  Mueller, Carsten W.
收藏  |  浏览/下载：6/0  |  提交时间：2019/04/09
C-14  N-15  common garden  heterotrophic respiration  mineral associated SOM  physical fractionation  stoichiometry  
Soil heterotrophic respiration: Measuring and modeling seasonal variation and silvicultural impacts 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 430: 594-608
作者:  Brown, Robert;  Markewitz, Daniel
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
Heterotrophic respiration  Soil respiration  Loblolly pine  DAYCENT  Silviculture  
Partitioning of the net CO2 exchange using an automated chamber system reveals plant phenology as key control of production and respiration fluxes in a boreal peatland 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (8) : 3436-3451
作者:  Jarveoja, Jarvi;  Nilsson, Mats B.;  Gazovic, Michal;  Crill, Patrick M.;  Peichl, Matthias
收藏  |  浏览/下载：25/0  |  提交时间：2019/04/09
autotrophic and heterotrophic respiration  biotic and abiotic controls  boreal fen  carbon dioxide  climate change  flux partitioning  gross and net primary production  vegetation phenology  
Hydraulic redistribution affects modeled carbon cycling via soil microbial activity and suppressed fire 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (8) : 3472-3485
作者:  Fu, Congsheng;  Wang, Guiling;  Bible, Kenneth;  Goulden, Michael L.;  Saleska, Scott R.;  Scott, Russell L.;  Cardon, Zoe G.
收藏  |  浏览/下载：10/0  |  提交时间：2019/04/09
decomposition  heterotrophic respiration  hydraulic descent  hydraulic lift  hydraulic redistribution  NEE  nutrient limitation  
Simulation of net ecosystem productivity of a lodgepole pine forest after mountain pine beetle attack using a modified version of 3-PG 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 412: 41-52
作者:  Meyer, Gesa;  Black, T. Andrew;  Jassal, Rachhpal S.;  Nesic, Zoran;  Coops, Nicholas C.;  Christen, Andreas;  Fredeen, Arthur L.;  Spittlehouse, David L.;  Grant, Nicholas J.;  Foord, Vanessa N.;  Bowler, Rebecca
收藏  |  浏览/下载：8/0  |  提交时间：2019/04/09
Eddy covariance  Net ecosystem productivity  Heterotrophic respiration  Gross primary productivity  Dendroctonus ponderosae  Pines contorta var. latifolia  
Biochar increased soil respiration in temperate forests but had no effects in subtropical forests 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2017, 405
作者:  Zhou, Guiyao;  Zhou, Xuhui;  Zhang, Tao;  Du, Zhenggang;  He, Yanghui;  Wang, Xihua;  Shao, Junjiong;  Cao, Ye;  Xue, Shenggui;  Wang, Hailong;  Xu, Chengyuan
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
Biochar  Autotrophic respiration  Heterotrophic respiration  Forest  Meta-analysis