Switchgrass rhizospheres stimulate microbial biomass but deplete microbial necromass in agricultural soils of the upper Midwest, USA
文献类型：期刊论文
| 作者 | Duncan, David S.1,3; Liang, Chao2,3; Jesus, Ederson da C.3,4; Quensen, John F.4; Jackson, Randall D.1,3; Balser, Teri C.3; Tiedje, James M.3,4 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 94页码:173-180 |
| 关键词 | Pyrosequencing Nifh Lipid Amino Sugar Plant-microbe Interaction Rhizosphere Switchgrass |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2015.11.020 |
| 英文摘要 | Rhizosphere microbial communities play an essential role in determining plant productivity, particularly in agriculturally marginal environments. Perennial plants like switchgrass (Panicum virgatum) are thought to particularly influence microbial community composition and function within their rhizosphere. We compared microbial communities in switchgrass rhizospheres and their associated bulk soils in two regions of the U.S. upper Midwest (Michigan and Wisconsin) with contrasting soil types, and at two site types with differing switchgrass establishment ages and management intensities. We characterized microbial communities with a range of culture-independent methods, including amplicon sequencing of 16S/18S rRNA and nifH genes, and membrane lipid profiling. In addition, we quantified abundances of soil amino sugars, a time-integrative indicator of microbial necromass. We found that amino sugar contents and microbial lipid profiles differed between rhizosphere and bulk soils, while DNA-based assays did not provide this discriminatory power. Differences between rhizosphere and bulk soils were not significantly affected by region or site type. Rhizosphere soils had higher microbial lipid abundances, particularly those associated with arbuscular mycorrhizal fungi and Gram-negative bacteria, while amino sugar abundances decreased in the rhizosphere. Our findings suggest switchgrass rhizospheres systematically stimulate microbial growth and microbial residue turnover. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000370094100018 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://210.72.129.5/handle/321005/122475]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Liang, Chao |
| 作者单位 | 1.Univ Wisconsin, Dept Agron, Madison, WI 53706 USA 2.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 3.Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA 4.Michigan State Univ, Ctr Microbial Ecol, E Lansing, MI 48824 USA |
| 推荐引用方式 GB/T 7714 | Duncan, David S.,Liang, Chao,Jesus, Ederson da C.,et al. Switchgrass rhizospheres stimulate microbial biomass but deplete microbial necromass in agricultural soils of the upper Midwest, USA[J]. SOIL BIOLOGY & BIOCHEMISTRY,2016,94:173-180. |
| APA | Duncan, David S..,Liang, Chao.,Jesus, Ederson da C..,Quensen, John F..,Jackson, Randall D..,...&Tiedje, James M..(2016).Switchgrass rhizospheres stimulate microbial biomass but deplete microbial necromass in agricultural soils of the upper Midwest, USA.SOIL BIOLOGY & BIOCHEMISTRY,94,173-180. |
| MLA | Duncan, David S.,et al."Switchgrass rhizospheres stimulate microbial biomass but deplete microbial necromass in agricultural soils of the upper Midwest, USA".SOIL BIOLOGY & BIOCHEMISTRY 94(2016):173-180. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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