干旱区生态环境知识资源中心(Arid): Salinity affects microbial function genes related to nutrient cycling in arid regions

Arid

DOI	10.3389/fmicb.2024.1407760
	Salinity affects microbial function genes related to nutrient cycling in arid regions
	Li, Yan; Li, Wenjing; Jiang, Lamei; Li, Eryang; Yang, Xiaodong; Yang, Jianjun
通讯作者	Yang, JJ
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2024
卷号	15
英文摘要	Introduction Salinization damages soil system health and influences microbial communities structure and function. The response of microbial functions involved in the nutrient cycle to soil salinization is a valuable scientific question. However, our knowledge of the microbial metabolism functions in salinized soil and their response to salinity in arid desert environments is inadequate.Methods Here, we applied metagenomics technology to investigate the response of microbial carbon (C), nitrogen (N), phosphorus (P), and sulfur (S) cycling and the key genes to salinity, and discuss the effects of edaphic variables on microbial functions.Results We found that carbon fixation dominated the carbon cycle. Nitrogen fixation, denitrification, assimilatory nitrate reduction (ANRA), and nitrogen degradation were commonly identified as the most abundant processes in the nitrogen cycle. Organic phosphorus dissolution and phosphorus absorption/transport were the most enriched P metabolic functions, while sulfur metabolism was dominated by assimilatory sulfate reduction (ASR), organic sulfur transformation, and linkages between inorganic and organic sulfur transformation. Increasing salinity inhibited carbon degradation, nitrogen fixation, nitrogen degradation, anammox, ANRA, phosphorus absorption and transport, and the majority of processes in sulfur metabolism. However, some of the metabolic pathway and key genes showed a positive response to salinization, such as carbon fixation (facA, pccA, korAB), denitrification (narG, nirK, norBC, nosZ), ANRA (nasA, nirA), and organic phosphorus dissolution processes (pstABCS, phnCD, ugpAB). High salinity reduced the network complexity in the soil communities. Even so, the saline microbial community presented highly cooperative interactions. The soil water content had significantly correlations with C metabolic genes. The SOC, N, and P contents were significantly correlated with C, N, P, and S network complexity and functional genes. AP, NH4+, and NO3- directly promote carbon fixation, denitrification, nitrogen degradation, organic P solubilization and mineralization, P uptake and transport, ASR, and organic sulfur transformation processes.Conclusion Soil salinity in arid region inhibited multiple metabolic functions, but prompted the function of carbon fixation, denitrification, ANRA, and organic phosphorus dissolution. Soil salinity was the most important factor driving microbial functions, and nutrient availability also played important roles in regulating nutrient cycling.
英文关键词	salinity carbon cycle nitrogen cycle phosphorus cycle sulfur cycle arid desert areas
类型	Article
语种	英语
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:001257240200001
WOS关键词	COMMUNITY STRUCTURE ; CD-HIT ; SOILS ; DIVERSITY ; IDENTIFICATION ; ALIGNMENT ; BACTERIAL ; GENOMES ; PROTEIN
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403851
推荐引用方式 GB/T 7714	Li, Yan,Li, Wenjing,Jiang, Lamei,et al. Salinity affects microbial function genes related to nutrient cycling in arid regions[J],2024,15.
APA	Li, Yan,Li, Wenjing,Jiang, Lamei,Li, Eryang,Yang, Xiaodong,&Yang, Jianjun.(2024).Salinity affects microbial function genes related to nutrient cycling in arid regions.FRONTIERS IN MICROBIOLOGY,15.
MLA	Li, Yan,et al."Salinity affects microbial function genes related to nutrient cycling in arid regions".FRONTIERS IN MICROBIOLOGY 15(2024).