干旱区生态环境知识资源中心(Arid): Microbial communities and their genetic repertoire mediate the decomposition of soil organic carbon pools in revegetation shrublands in a desert in northern China

Arid

DOI	10.1111/ejss.12824
	Microbial communities and their genetic repertoire mediate the decomposition of soil organic carbon pools in revegetation shrublands in a desert in northern China
	Sun, Yanfei 1; Liu, Zhen 1; Zhang, Yuqing 1,2; Lai, Zongrui 1,2; She, Weiwei 1,2; Bai, Yuxuan 1; Feng, Wei 1,2; Qin, Shugao 1,3
通讯作者	Zhang, Yuqing
来源期刊	EUROPEAN JOURNAL OF SOIL SCIENCE
ISSN	1351-0754
EISSN	1365-2389
出版年	2020
卷号	71 期号:1 页码:93-105
英文摘要	Revegetation using xerophytic plants in drylands can alter soil microbial community diversity and composition; however, information about the microbial communities and their genetic repertoires that are involved in soil organic carbon (SOC) processes in drylands remain unclear. This study aimed to characterize soil microbial genes and their potential to mediate SOC decomposition in three revegetation shrublands (Artemisia ordosica, Salix psammophila and Caragana microphylla) in the Mu Us Desert of northern China using an SOC mineralization experiment and shotgun metagenome sequencing. Among the three shrublands, the S. psammophila shrubland had the highest cumulative CO2 emissions and highest rates of mineralization of the slow SOC pool. The mineralization rate of the slow SOC pool and the microbial taxonomic and functional composition displayed a significant correlation. Most C-degradation genes were assigned to three bacterial phyla, Actinobacteria, Proteobacteria and Acidobacteria. The relative abundance of microbial functional genes involved in degrading recalcitrant C-complexes was significantly higher in the S. psammophila shrubland, resulting in the slow accumulation of recalcitrant SOC. These results suggest that the microbial functional genes that regulate the decomposition of the SOC pool in dryland shrubland soils may be influenced by shrub species selection. These findings highlight the importance of understanding how microbial catabolic potential mediates the potential for SOC sequestration in different revegetation shrublands in drylands. Highlights We studied SOC mineralization and soil microbial functional genes in three revegetation shrublands. S. psammophila shrubland had the highest CO2 emissions and highest mineralization rates of the slow C pool. Slow SOC pool mineralization rate was related to microbial taxonomic and functional composition. Different dryland shrubs may mediate soil microbial functional genes that regulate SOC pool decomposition.
英文关键词	dryland metagenomics revegetation shrubland soil microbial functional genes soil organic carbon mineralization
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000506301800010
WOS关键词	VERTICAL-DISTRIBUTION ; LITTER DECOMPOSITION ; CLIMATE-CHANGE ; MINERALIZATION ; NITROGEN ; SEQUESTRATION ; STABILIZATION ; FEEDBACKS ; DIVERSITY ; GRADIENT
WOS类目	Soil Science
WOS研究方向	Agriculture
EI主题词	2020-01-01
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312087
作者单位	1.Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing, Peoples R China; 2.Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing, Peoples R China; 3.Beijing Forestry Univ, Engn Res Ctr Forestry Ecol Engn, Minist Educ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yanfei,Liu, Zhen,Zhang, Yuqing,et al. Microbial communities and their genetic repertoire mediate the decomposition of soil organic carbon pools in revegetation shrublands in a desert in northern China[J]. 北京林业大学,2020,71(1):93-105.
APA	Sun, Yanfei.,Liu, Zhen.,Zhang, Yuqing.,Lai, Zongrui.,She, Weiwei.,...&Qin, Shugao.(2020).Microbial communities and their genetic repertoire mediate the decomposition of soil organic carbon pools in revegetation shrublands in a desert in northern China.EUROPEAN JOURNAL OF SOIL SCIENCE,71(1),93-105.
MLA	Sun, Yanfei,et al."Microbial communities and their genetic repertoire mediate the decomposition of soil organic carbon pools in revegetation shrublands in a desert in northern China".EUROPEAN JOURNAL OF SOIL SCIENCE 71.1(2020):93-105.