干旱区生态环境知识资源中心(Arid): Biological Soil Crust Bacterial Communities Vary Along Climatic and Shrub Cover Gradients Within a Sagebrush Steppe Ecosystem

Arid

DOI	10.3389/fmicb.2021.569791
	Biological Soil Crust Bacterial Communities Vary Along Climatic and Shrub Cover Gradients Within a Sagebrush Steppe Ecosystem
	You, Yaqi; Aho, Ken; Lohse, Kathleen A.; Schwabedissen, Stacy G.; Ledbetter, Rhesa N.; Magnuson, Timothy S.
通讯作者	You, YQ ; Aho, K (corresponding author), Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA. ; You, YQ (corresponding author), SUNY Coll Environm Sci & Forestry, Dept Environm Resources Engn, Syracuse, NY 13210 USA.
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2021
卷号	12
英文摘要	Numerous studies have examined bacterial communities in biological soil crusts (BSCs) associated with warm arid to semiarid ecosystems. Few, however, have examined bacterial communities in BSCs associated with cold steppe ecosystems, which often span a wide range of climate conditions and are sensitive to trends predicted by relevant climate models. Here, we utilized Illumina sequencing to examine BSC bacterial communities with respect to climatic gradients (elevation), land management practices (grazing vs. non-grazing), and shrub/intershrub patches in a cold sagebrush steppe ecosystem in southwestern Idaho, United States. Particular attention was paid to shifts in bacterial community structure and composition. BSC bacterial communities, including keystone N-fixing taxa, shifted dramatically with both elevation and shrub-canopy microclimates within elevational zones. BSC cover and BSC cyanobacteria abundance were much higher at lower elevation (warmer and drier) sites and in intershrub areas. Shrub-understory BSCs were significantly associated with several non-cyanobacteria diazotrophic genera, including Mesorhizobium and Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium. High elevation (wetter and colder) sites had distinct, highly diverse, but low-cover BSC communities that were significantly indicated by non-cyanobacterial diazotrophic taxa including families in the order Rhizobiales and the family Frankiaceae. Abiotic soil characteristics, especially pH and ammonium, varied with both elevation and shrub/intershrub level, and were strongly associated with BSC community composition. Functional inference using the PICRUSt pipeline identified shifts in putative N-fixing taxa with respect to both the elevational gradient and the presence/absence of shrub canopy cover. These results add to current understanding of biocrust microbial ecology in cold steppe, serving as a baseline for future mechanistic research.
英文关键词	climate change nitrogen cycling cyanobacteria bacterial community biological soil crusts sagebrush steppe Reynolds Creek Critical Zone Observatory symbiotic diazotrophs
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:000652172400001
WOS关键词	NITROGEN-FIXATION ; PHYSICAL DISTURBANCE ; SPATIAL-DISTRIBUTION ; COLORADO PLATEAU ; FUNCTIONAL DIVERSITY ; MICROBIAL COMMUNITY ; NEGEV DESERT ; CYANOBACTERIA ; PRECIPITATION ; ELEVATION
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/2XILL650/350315
作者单位	[You, Yaqi; Aho, Ken; Lohse, Kathleen A.; Schwabedissen, Stacy G.; Ledbetter, Rhesa N.; Magnuson, Timothy S.] Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA; [You, Yaqi] SUNY Coll Environm Sci & Forestry, Dept Environm Resources Engn, Syracuse, NY 13210 USA; [Schwabedissen, Stacy G.] Clear Springs Foods Co, Buhl, ID USA
推荐引用方式 GB/T 7714	You, Yaqi,Aho, Ken,Lohse, Kathleen A.,et al. Biological Soil Crust Bacterial Communities Vary Along Climatic and Shrub Cover Gradients Within a Sagebrush Steppe Ecosystem[J],2021,12.
APA	You, Yaqi,Aho, Ken,Lohse, Kathleen A.,Schwabedissen, Stacy G.,Ledbetter, Rhesa N.,&Magnuson, Timothy S..(2021).Biological Soil Crust Bacterial Communities Vary Along Climatic and Shrub Cover Gradients Within a Sagebrush Steppe Ecosystem.FRONTIERS IN MICROBIOLOGY,12.
MLA	You, Yaqi,et al."Biological Soil Crust Bacterial Communities Vary Along Climatic and Shrub Cover Gradients Within a Sagebrush Steppe Ecosystem".FRONTIERS IN MICROBIOLOGY 12(2021).