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Microbial community structure and functional genes drive soil priming effect following afforestation

文献类型：期刊论文

作者Zhou, Sha1,2; Wang, Jieying1,2; Chen, Lan1,2; Wang, Jun1,2,3; Zhao, Fazhu1,2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2022-06-15
卷号825页码:11
关键词Afforestation Metagenomic sequencing 13C-glucose labeling Stable C Microbial function
ISSN号0048-9697
DOI10.1016/j.scitotenv.2022.153925
通讯作者Wang, Jun(wangj@nwu.edu.cn)
英文摘要Afforestation substantially modifies native soil organic carbon (SOC) decomposition via plant carbon inputs (the priming effect), and in turn, triggers vital biogeochemical processes that influence the regulation of soil carbon dynamics. Soil microbes are crucial in regulating the direction and magnitude of the priming effect. In the present study, we performed metagenomic sequencing and 13C-glucose labeling analyses of microbial communities and priming effects across a Robinia pseudoacacia afforestation chronosequence (14-, 20-, 30-, and 45-year-old stands) in the Loess Plateau in China, with adjacent farmland being selected as a control. Our results revealed that the cumulative priming effect across five sites along the afforestation chronosequence initially increased and approached a peak value in the 20year-old stand, after which it declined. The priming effect was predominantly driven by the microbial community structure (i.e., the fungal-to-bacterial ratios and relative abundances of Proteobacteria and Actinobacteria), and stable C decomposition genes and C-degrading enzymes. Specifically, among the key functional genes correlated with priming effect, which were identified in orders Rhizobiales and Pseudonocardiales, considerably promoted SOC priming. Overall, our findings indicate that afforestation alters soil microbial community structure and function, particularly with respect to enhancing stable soil C decomposition genes, which may promote SOC priming. The findings of the present study could enhance our understanding of fresh C input-induced changes associated with C mineralization in the context of the revegetation of ecologically fragile areas.
WOS关键词ORGANIC-MATTER ; CNP STOICHIOMETRY ; CARBON INPUTS ; DECOMPOSITION ; BACTERIAL ; BIOMASS ; AGGREGATION ; NITROGEN ; DIVERSITY ; TRAITS
资助项目Chinese Academy of Sciences Light of West China Program for Introduced Talent in the West[31570440] ; Natural Science Basic Research Plan in Shaanxi Province of China[2020JQ-272] ; Key International Scientific and Technological Cooperation and Exchange Project of Shaanxi Province, China[2020KWZ-010]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000764242600005
出版者ELSEVIER
资助机构Chinese Academy of Sciences Light of West China Program for Introduced Talent in the West ; Natural Science Basic Research Plan in Shaanxi Province of China ; Key International Scientific and Technological Cooperation and Exchange Project of Shaanxi Province, China
源URL[http://ir.igsnrr.ac.cn/handle/311030/172815]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Jun
作者单位1.Northwest Univ, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China
2.Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Sha,Wang, Jieying,Chen, Lan,et al. Microbial community structure and functional genes drive soil priming effect following afforestation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,825:11.
APA Zhou, Sha,Wang, Jieying,Chen, Lan,Wang, Jun,&Zhao, Fazhu.(2022).Microbial community structure and functional genes drive soil priming effect following afforestation.SCIENCE OF THE TOTAL ENVIRONMENT,825,11.
MLA Zhou, Sha,et al."Microbial community structure and functional genes drive soil priming effect following afforestation".SCIENCE OF THE TOTAL ENVIRONMENT 825(2022):11.

入库方式： OAI收割

来源：地理科学与资源研究所

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