干旱区生态环境知识资源中心(Arid): Biological soil crusts on agricultural soils of mesic regions promote microbial cross-kingdom co-occurrences and nutrient retention

Arid

DOI	10.3389/fmicb.2023.1169958
	Biological soil crusts on agricultural soils of mesic regions promote microbial cross-kingdom co-occurrences and nutrient retention
	Kurth, Julia Katharina; Albrecht, Martin; Glaser, Karin; Karsten, Ulf; Vestergaard, Gisle; Armbruster, Martin; Kublik, Susanne; Schmid, Christoph A. O.; Schloter, Michael; Schulz, Stefanie
通讯作者	Kurth, JK
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2023
卷号	14
英文摘要	IntroductionBiological soil crusts (biocrusts) are known as biological hotspots on undisturbed, nutrient-poor bare soil surfaces and until now, are mostly observed in (semi-) arid regions but are currently poorly understood in agricultural systems. This is a crucial knowledge gap because managed sites of mesic regions can quickly cover large areas. Thus, we addressed the questions (i) if biocrusts from agricultural sites of mesic regions also increase nutrients and microbial biomass as their (semi-) arid counterparts, and (ii) how microbial community assemblage in those biocrusts is influenced by disturbances like different fertilization and tillage regimes. MethodsWe compared phototrophic biomass, nutrient concentrations as well as the abundance, diversity and co-occurrence of Archaea, Bacteria, and Fungi in biocrusts and bare soils at a site with low agricultural soil quality. Results and DiscussionBiocrusts built up significant quantities of phototrophic and microbial biomass and stored more nutrients compared to bare soils independent of the fertilizer applied and the tillage management. Surprisingly, particularly low abundant Actinobacteria were highly connected in the networks of biocrusts. In contrast, Cyanobacteria were rarely connected, which indicates reduced importance within the microbial community of the biocrusts. However, in bare soil networks, Cyanobacteria were the most connected bacterial group and, hence, might play a role in early biocrust formation due to their ability to, e.g., fix nitrogen and thus induce hotspot-like properties. The microbial community composition differed and network complexity was reduced by conventional tillage. Mineral and organic fertilizers led to networks that are more complex with a higher percentage of positive correlations favoring microbe-microbe interactions. Our study demonstrates that biocrusts represent a microbial hotspot on soil surfaces under agricultural use, which may have important implications for sustainable management of such soils in the future.
英文关键词	biocrust amplicon hotspot managed site Cyanobacteria microbial co-occurrence network mesophilic region
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:001036266600001
WOS关键词	POLYMERIC SUBSTANCES EPS ; PHYSICAL DISTURBANCE ; BACTERIAL COMMUNITIES ; FUNGAL COMMUNITIES ; ORGANIC-MATTER ; CLIMATE-CHANGE ; DIVERSITY ; GRADIENT ; MICROORGANISMS ; IDENTIFICATION
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/2XILL650/396560
推荐引用方式 GB/T 7714	Kurth, Julia Katharina,Albrecht, Martin,Glaser, Karin,et al. Biological soil crusts on agricultural soils of mesic regions promote microbial cross-kingdom co-occurrences and nutrient retention[J],2023,14.
APA	Kurth, Julia Katharina.,Albrecht, Martin.,Glaser, Karin.,Karsten, Ulf.,Vestergaard, Gisle.,...&Schulz, Stefanie.(2023).Biological soil crusts on agricultural soils of mesic regions promote microbial cross-kingdom co-occurrences and nutrient retention.FRONTIERS IN MICROBIOLOGY,14.
MLA	Kurth, Julia Katharina,et al."Biological soil crusts on agricultural soils of mesic regions promote microbial cross-kingdom co-occurrences and nutrient retention".FRONTIERS IN MICROBIOLOGY 14(2023).