干旱区生态环境知识资源中心(Arid): Landscape characteristics shape surface soil microbiomes in the Chihuahuan Desert

Arid

DOI	10.3389/fmicb.2023.1135800
	Landscape characteristics shape surface soil microbiomes in the Chihuahuan Desert
	Hansen, Frederick A.; James, Darren K.; Anderson, John P.; Meredith, Christy S.; Dominguez, Andrew J.; Pombubpa, Nuttapon; Stajich, Jason E.; Romero-Olivares, Adriana L.; Salley, Shawn W.; Pietrasiak, Nicole
通讯作者	Pietrasiak, N
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2023
卷号	14
英文摘要	IntroductionSoil microbial communities, including biological soil crust microbiomes, play key roles in water, carbon and nitrogen cycling, biological weathering, and other nutrient releasing processes of desert ecosystems. However, our knowledge of microbial distribution patterns and ecological drivers is still poor, especially so for the Chihuahuan Desert. MethodsThis project investigated the effects of trampling disturbance on surface soil microbiomes, explored community composition and structure, and related patterns to abiotic and biotic landscape characteristics within the Chihuahuan Desert biome. Composite soil samples were collected in disturbed and undisturbed areas of 15 long-term ecological research plots in the Jornada Basin, New Mexico. Microbial diversity of cross-domain microbial groups (total Bacteria, Cyanobacteria, Archaea, and Fungi) was obtained via DNA amplicon metabarcode sequencing. Sequence data were related to landscape characteristics including vegetation type, landforms, ecological site and state as well as soil properties including gravel content, soil texture, pH, and electrical conductivity. ResultsFilamentous Cyanobacteria dominated the photoautotrophic community while Proteobacteria and Actinobacteria dominated among the heterotrophic bacteria. Thaumarchaeota were the most abundant Archaea and drought adapted taxa in Dothideomycetes and Agaricomycetes were most abundant fungi in the soil surface microbiomes. Apart from richness within Archaea (p = 0.0124), disturbed samples did not differ from undisturbed samples with respect to alpha diversity and community composition (p & GE; 0.05), possibly due to a lack of frequent or impactful disturbance. Vegetation type and landform showed differences in richness of Bacteria, Archaea, and Cyanobacteria but not in Fungi. Richness lacked strong relationships with soil variables. Landscape features including parent material, vegetation type, landform type, and ecological sites and states, exhibited stronger influence on relative abundances and microbial community composition than on alpha diversity, especially for Cyanobacteria and Fungi. Soil texture, moisture, pH, electrical conductivity, lichen cover, and perennial plant biomass correlated strongly with microbial community gradients detected in NMDS ordinations. DiscussionOur study provides first comprehensive insights into the relationships between landscape characteristics, associated soil properties, and cross-domain soil microbiomes in the Chihuahuan Desert. Our findings will inform land management and restoration efforts and aid in the understanding of processes such as desertification and state transitioning, which represent urgent ecological and economical challenges in drylands around the world.
英文关键词	bacteria cyanobacteria (blue-green algae) archaea fungi dryland biocrust topsoil soil geomorphic template
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001012303700001
WOS关键词	ARID-LANDS ; POLYPHASIC CHARACTERIZATION ; PHYLOGENETIC PLACEMENT ; SPATIAL-DISTRIBUTION ; CRUST DISTRIBUTION ; CYANOBACTERIA ; COMMUNITY ; DISTURBANCE ; PATTERNS ; PSEUDANABAENALES
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/2XILL650/396557
推荐引用方式 GB/T 7714	Hansen, Frederick A.,James, Darren K.,Anderson, John P.,et al. Landscape characteristics shape surface soil microbiomes in the Chihuahuan Desert[J],2023,14.
APA	Hansen, Frederick A..,James, Darren K..,Anderson, John P..,Meredith, Christy S..,Dominguez, Andrew J..,...&Pietrasiak, Nicole.(2023).Landscape characteristics shape surface soil microbiomes in the Chihuahuan Desert.FRONTIERS IN MICROBIOLOGY,14.
MLA	Hansen, Frederick A.,et al."Landscape characteristics shape surface soil microbiomes in the Chihuahuan Desert".FRONTIERS IN MICROBIOLOGY 14(2023).