Dominant extracellular enzymes in priming of SOM decomposition depend on temperature
文献类型：期刊论文
| 作者 | Liu, Qianyuan3,4; Xu, Xingliang3; Wang, Huimin2,3,4; Blagodatskaya, Evgenia5; Kuzyakov, Yakov1 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 343页码:187-195 |
| 关键词 | Soil organic matter C-14 labeling technique Priming Temperature Extracellular enzymes |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2019.02.006 |
| 通讯作者 | Xu, Xingliang(xuxingl@hotmail.com) |
| 英文摘要 | Decomposition of soil organic matter (SOM) is operated by microbial extracellular enzymes and is dependent on temperature. It remains unclear how input of labile organics interacts with temperature on SOM decomposition. Soil samples collected from a temperate forest were incubated for 3 months to quantify SOM decomposition and its priming induced by input of C-14-labelled glucose at five temperatures (from 3 to 31 degrees C with an interval of 7 degrees C). The activities of eight extracellular enzymes were measured four times during the incubation. Increasing temperature accelerated SOM decomposition with a temperature sensitivity (Q(10)) value ranging from 1.3 to 4.4. Response of priming to temperature was mediated by the activity and variety of extracellular enzymes temporally: (1) priming increased with increasing temperature at the initial stage; (2) subsequently, priming at lower temperature gradually exceeded those at higher temperature; and (3) finally, priming at high temperature was higher than at low temperatures. At higher temperatures (17-31 degrees C), N-acquiring enzymes (leucine amino peptidase and N-acetyl-beta-o-glucosaminidase) dominated at the early stage of priming, but C-acquiring enzymes (beta-glucosidase and xylanase) dominated at later stages. Priming exhibited a hysteresis at low temperatures (3-17 degrees C) with C-acquiring enzyme (beta-galactosidase) dominating at the initial stage, C-and P-acquiring enzymes (alpha-glucosidase and phosphomonoesterase) at the middle stage, and C-acquiring enzymes (beta-galactosidase and xylanase) at the later stage. Consequently, microbial extracellular enzymes were produced in terms of nutrient availability over time depended on temperature. Such acclimation of microbial extracellular enzymes to temperature and nutrient availability should be considered to predict responses of C cycling to global change. |
| WOS关键词 | SOIL ORGANIC-MATTER ; MICROBIAL BIOMASS ; LITTER DECOMPOSITION ; CARBON ; SENSITIVITY ; MECHANISMS ; FEEDBACKS ; RESPIRATION ; INCREASES ; QUALITY |
| 资助项目 | National Natural Science Foundation of China[41877089] ; National Natural Science Foundation of China[31470560] ; National Natural Science Foundation of China[41671253] ; German Research Foundation (DFG) within the Priority Programme 1372 'Tibetan Plateau: Formation - Climate - Ecosystems (TiP)' ; Youth Innovation Research Team Project[LENOM2016Q0004] ; CAS President's International Fellowship for Visiting Scientists[2018VCB0012] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000463304300017 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; German Research Foundation (DFG) within the Priority Programme 1372 'Tibetan Plateau: Formation - Climate - Ecosystems (TiP)' ; Youth Innovation Research Team Project ; CAS President's International Fellowship for Visiting Scientists |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/48108]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Xingliang |
| 作者单位 | 1.Univ Gottingen, Dept Agr Soil Sci, Dept Soil Sci Temperate Ecosyst, Gottingen, Germany 2.Jiangxi Key Lab Ecosyst Proc & Informat, Jian 343725, Jiangxi, Peoples R China 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Inst Geog Sci & Nat Resources, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 5.RUDN Univ, Agrotechnol Inst, Moscow, Russia |
| 推荐引用方式 GB/T 7714 | Liu, Qianyuan,Xu, Xingliang,Wang, Huimin,et al. Dominant extracellular enzymes in priming of SOM decomposition depend on temperature[J]. GEODERMA,2019,343:187-195. |
| APA | Liu, Qianyuan,Xu, Xingliang,Wang, Huimin,Blagodatskaya, Evgenia,&Kuzyakov, Yakov.(2019).Dominant extracellular enzymes in priming of SOM decomposition depend on temperature.GEODERMA,343,187-195. |
| MLA | Liu, Qianyuan,et al."Dominant extracellular enzymes in priming of SOM decomposition depend on temperature".GEODERMA 343(2019):187-195. |
入库方式： OAI收割
来源：地理科学与资源研究所
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