干旱区生态环境知识资源中心(Arid): Competing drivers of soil microbial community assembly in a cold arid zone and their implications on constraints of n-alkane proxies

Arid

DOI	10.1016/j.chemgeo.2022.120985
	Competing drivers of soil microbial community assembly in a cold arid zone and their implications on constraints of n-alkane proxies
	Yan, Yan; Mu, Rong; Qiao, Xuejiao; Yu, Ke; Xie, Luhua; Wang, Fan; Zhao, Bingyan; Zhu, Zhaoyu
通讯作者	Yan, Y
来源期刊	CHEMICAL GEOLOGY
ISSN	0009-2541
EISSN	1872-6836
出版年	2022
卷号	606
英文摘要	Soil microbial assembly in cold arid deserts is under dispute, while its possible constraints on n-alkane proxies have been posited without direct evidence. To further explore their underlying mechanisms, we analyzed the 16S rRNA data along two salinity and one precipitation gradient from the Junggar Basin of northwest China. The null-model phylogenetic composition analysis shows homogeneous selection of deterministic processes assembled prokaryotic (dominated by bacterial) communities, while stochastic processes dominated the archaeal community assembly. Multivariate linear regression analyses show precipitation-related variables and salinity are leading predictors of the prokaryotic beta diversity in the low- and high-salinity settings, respectively, but can only explain limited variance, while reliable predictors for alpha diversity are lacking along different gradients. We suggest instead of previously reported a primary one, multiple competing environmental variables assembled the prokaryotic communities. Further comparison with n-alkane proxies reveals multiple species could have potentially contributed to, but not controlled the previously reported negative n-alkane ACL (Average Chain Length)-salinity correlation in high-salinity soils, while the reported positive n-alkane CPI (Carbon Preference Index)-precipitation correlation is attributed to precipitation-regulated combined plant-biome input in lowsalinity settings. This provided the first direct microbial evidence validating CPI???s application in paleovegetation/precipitation reconstruction in low-salinity dry land settings.
英文关键词	N -alkane CPI Microbial assembly Microbial degradation Arid zone
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000818593000003
WOS关键词	BACTERIAL BETA-DIVERSITY ; DETERMINISTIC PROCESSES ; NEUTRAL THEORY ; DEGRADATION ; BIODEGRADATION ; PATTERNS ; BIOGEOGRAPHY ; TEMPERATURE ; SEQUENCES ; SEDIMENTS
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392130
推荐引用方式 GB/T 7714	Yan, Yan,Mu, Rong,Qiao, Xuejiao,et al. Competing drivers of soil microbial community assembly in a cold arid zone and their implications on constraints of n-alkane proxies[J],2022,606.
APA	Yan, Yan.,Mu, Rong.,Qiao, Xuejiao.,Yu, Ke.,Xie, Luhua.,...&Zhu, Zhaoyu.(2022).Competing drivers of soil microbial community assembly in a cold arid zone and their implications on constraints of n-alkane proxies.CHEMICAL GEOLOGY,606.
MLA	Yan, Yan,et al."Competing drivers of soil microbial community assembly in a cold arid zone and their implications on constraints of n-alkane proxies".CHEMICAL GEOLOGY 606(2022).