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Exudate components exert different influences on microbially mediated C losses in simulated rhizosphere soils of a spruce plantation

文献类型：期刊论文

作者Yuan, Yuanshuang1,2; Zhao, Wenqiang1; Xiao, Juan3; Zhang, Ziliang1,2; Qiao, Mingfeng4; Liu, Qing1; Yin, Huajun1,3
刊名PLANT AND SOIL
出版日期2017-01
卷号419期号:1-2页码:127-140
ISSN号0032-079X
关键词Exudate Soil microbial community Extracellular enzyme Carbon loss Subalpine coniferous forest
DOI10.1007/s11104-017-3334-6
产权排序1
文献子类Article
英文摘要Root exudates play a vital role in driving ecosystem carbon (C) cycling; however, few studies have examined the degree to which a specific exudate component affects soil C loss. The objective was to examine the impacts of different exudate components on microbially-mediated C decomposition and their underlying mechanisms. In a well-controlled simulated rhizosphere system, we added exudate chemicals (glucose, glycine and oxalic acid) to spruce (Picea asperata) plantation soils over a 35-day period. The total C contents, net N mineralization rates, microbial communities and extracellular enzymes were measured. The three exudate components induced different C losses by different mechanisms. Oxalic acid promoted net C loss by accelerating microbial mineralization of soil organic matter (SOM). In contrast, glucose resulted in a net C accumulation, which challenged the assumption that glucose serves as a co-metabolite in driving SOM decomposition to lose C. Glycine increased the total C content via negative priming effects. Exudate-induced rhizosphere priming effects are not entirely dependent on the energy properties of root exudates. Different exudates may affect SOM decomposition differently, thus the component-specialized rhizosphere processes induced by individual exudate components on soil C dynamics should be integrated into forest C cycle-climate feedbacks under environmental changes.
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WOS关键词FATTY-ACID PROFILES ; ROOT EXUDATION ; ORGANIC-MATTER ; ELEVATED CO2 ; COMMUNITY STRUCTURE ; CARBON DYNAMICS ; FOREST ; PLANTS ; NITROGEN ; RHIZODEPOSITION
WOS研究方向Agriculture ; Plant Sciences
语种英语
出版者SPRINGER
WOS记录号WOS:000415350500010
源URL[http://210.75.237.14/handle/351003/29894]  
专题生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
成都生物研究所_生态研究
生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
生物多样性与生态系统服务领域
生物多样性与生态系统服务领域_生态研究
作者单位1.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637000, Peoples R China;
4.Sichuan Tourism Univ, Chengdu 610100, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Yuanshuang,Zhao, Wenqiang,Xiao, Juan,et al. Exudate components exert different influences on microbially mediated C losses in simulated rhizosphere soils of a spruce plantation[J]. PLANT AND SOIL,2017,419(1-2):127-140.
APA Yuan, Yuanshuang.,Zhao, Wenqiang.,Xiao, Juan.,Zhang, Ziliang.,Qiao, Mingfeng.,...&Yin, Huajun.(2017).Exudate components exert different influences on microbially mediated C losses in simulated rhizosphere soils of a spruce plantation.PLANT AND SOIL,419(1-2),127-140.
MLA Yuan, Yuanshuang,et al."Exudate components exert different influences on microbially mediated C losses in simulated rhizosphere soils of a spruce plantation".PLANT AND SOIL 419.1-2(2017):127-140.

入库方式： OAI收割

来源：成都生物研究所

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