Climate Change Data Portal
DOI | 10.1016/j.scitotenv.2018.10.353 |
Long-termelevated CO2 shifts composition of soil microbial communities in a Californian annual grassland, reducing growth and N utilization potentials | |
Yang, Sihang1; Zheng, Qiaoshu1; Yuan, Mengting2; Shi, Zhou2; Chiariello, Nona R.3; Docherty, Kathryn M.4; Dong, Shikui5; Field, Christopher B.3; Gu, Yunfu2,6; Gutknecht, Jessica7,8; Hungate, Bruce A.9; Le Roux, Xavier10; Ma, Xingyu1; Niboyet, Audrey11,12; Yuan, Tong2; Zhou, Jizhong1,2,13; Yang, Yunfeng1 | |
发表日期 | 2019 |
ISSN | 0048-9697 |
EISSN | 1879-1026 |
卷号 | 652页码:1474-1481 |
英文摘要 | The continuously increasing concentration of atmospheric CO2 has considerably altered ecosystem functioning. However, few studies have examined the long-term (i.e. over a decade) effect of elevated CO2 on soil microbial communities. Using 16S rRNA gene amplicons and a GeoChip microarray, we investigated soil microbial communities from a Californian annual grassland after 14 years of experimentally elevated CO2 (275 ppm higher than ambient). Both taxonomic and functional gene compositions of the soil microbial community were modified by elevated CO2. There was decrease in relative abundance for taxa with higher ribosomal RNA operon (rrn) copy number under elevated CO2, which is a functional trait that responds positively to resource availability in culture. In contrast, taxa with lower rrn copy number were increased by elevated CO2. As a consequence, the abundance-weighted average rrn copy number of significantly changed OTUs declined from 2.27 at ambient CO2 to 2.01 at elevated CO2. The nitrogen (N) fixation gene nifH and the ammonium-oxidizing gene amoA significantly decreased under elevated CO2 by 12.6% and 6.1%, respectively. Concomitantly, nitrifying enzyme activity decreased by 48.3% under elevated CO2, albeit this change was not significant. There was also a substantial but insignificant decrease in available soil N, with both nitrate (NO3) (-27.4%) and ammonium (NH4+) (-15.4%) declining. Further, a large number of microbial genes related to carbon (C) degradation were also affected by elevated CO2, whereas those related to C fixation remained largely unchanged. The overall changes in microbial communities and soil N pools induced by long-term elevated CO2 suggest constrained microbial N decomposition, thereby slowing the potential maximum growth rate of the microbial community. (C) 2018 Elsevier B.V. All rights reserved. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93615 |
作者单位 | 1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China; 2.Univ Oklahoma, Dept Microbiol & Plant Biol, Inst Environm Genom, Norman, OK 73019 USA; 3.Stanford Univ, Stanford, CA 94305 USA; 4.Western Michigan Univ, Dept Biol Sci, Kalamazoo, MI 49008 USA; 5.Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100875, Peoples R China; 6.Sichuan Agr Univ, Dept Microbiol, Coll Resource Sci & Technol, Chengdu 611130, Sichuan, Peoples R China; 7.UFZ Helmholtz Ctr Environm Res, Dept Soil Ecol, D-06120 Halle, Germany; 8.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55104 USA; 9.No Arizona Univ, Dept Biol Sci, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA; 10.Univ Lyon 1, Ctr Microbial Ecol, INRA, CNRS,Univ Lyon,UMR INRA 1418,UMR CNRS 5557, 43 Blvd 11 Novembre 1918, F-69622 Villeurbanne, France; 11.Univ Paris Diderot, Sorbonne Univ, Inst Ecol & Sci Environm Paris, CNRS,INRA,IRD,UPEC, 4 Pl Jussieu, F-75005 Paris, France; 12.AgroParisTech, F-75005 Paris, France; 13.Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA |
推荐引用方式 GB/T 7714 | Yang, Sihang,Zheng, Qiaoshu,Yuan, Mengting,et al. Long-termelevated CO2 shifts composition of soil microbial communities in a Californian annual grassland, reducing growth and N utilization potentials[J],2019,652:1474-1481. |
APA | Yang, Sihang.,Zheng, Qiaoshu.,Yuan, Mengting.,Shi, Zhou.,Chiariello, Nona R..,...&Yang, Yunfeng.(2019).Long-termelevated CO2 shifts composition of soil microbial communities in a Californian annual grassland, reducing growth and N utilization potentials.SCIENCE OF THE TOTAL ENVIRONMENT,652,1474-1481. |
MLA | Yang, Sihang,et al."Long-termelevated CO2 shifts composition of soil microbial communities in a Californian annual grassland, reducing growth and N utilization potentials".SCIENCE OF THE TOTAL ENVIRONMENT 652(2019):1474-1481. |
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