干旱区生态环境知识资源中心(Arid): The Bacterial Microbiome Associated With Arid Biocrusts and the Biogeochemical Influence of Biocrusts Upon the Underlying Soil

Arid

DOI	10.3389/fmicb.2019.02143
	The Bacterial Microbiome Associated With Arid Biocrusts and the Biogeochemical Influence of Biocrusts Upon the Underlying Soil
	Moreira-Grez, Benjamin 1; Tam, Kang 1,2; Cross, Adam T.2; Yong, Jean W. H.2,3,4; Kumaresan, Deepak 5; Nevill, Paul 2; Farrell, Mark 6; Whiteley, Andrew S.1
通讯作者	Whiteley, Andrew S.
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2019
卷号	10
英文摘要	Biocrusts are aggregated crusts that exist on the soil surface of arid environments. They are complex microbial communities comprised of cyanobacteria, lichens, mosses, algae and fungi. Recently, biocrusts have gained significant attention due to their ubiquitous distribution and likely important ecological roles, including soil stabilization, soil moisture retention, carbon (C) and nitrogen (N) fixation, as well as microbial engineers for semiarid ecosystem restoration. Here, we collected three co-occurring types of biocrust (Cyanobacterial crust, Crustose lichen, and Foliose lichen) and their underlying soil from arid zones within Western Australia. Bacterial microbiome composition was determined through 16S rRNA gene amplicon sequencing to assess the extent of microbiome selection within the crusts versus underlying soil and biogeochemical measures performed to determine whether the crusts had significant impact upon the underlying soil for nutrient input. We determined that the bacterial communities of native biocrusts are distinct from those in their underlying soil, where dominant bacterial taxa differed according to crust morphologies. delta N-1(5) revealed that N-fixation appeared most evident in Foliose lichen crust (1.73 +/- 1.04 parts per thousand). Consequently, depending upon the crust type, biocrusts contained higher concentrations of organic C (2 to 50 times), total N (4 to 16 times) and available ammonium (2 to 4 times), though this enrichment did not extend to the soils underneath them. These findings demonstrate that biocrust communities are seemingly islands of biological activity in an arid landscape, uniquely different from their surrounding and underlying soil.
英文关键词	biological soil crust biocrust 16S rRNA microbial communities delta N-1(5) semi-arid environment
类型	Article
语种	英语
国家	Australia ; Sweden ; North Ireland
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000487248700001
WOS关键词	LICHEN-ASSOCIATED BACTERIA ; NITROGEN-FIXATION ; CRUSTS ; DESERT ; COMMUNITIES ; THROUGHPUT ; DIVERSITY ; CARBON ; ECOSYSTEMS ; DELTA-N-15
WOS类目	Microbiology
WOS研究方向	Microbiology
来源机构	Commonwealth Scientific and Industrial Research Organisation ; University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215811
作者单位	1.Univ Western Australia, Fac Sci, UWA Sch Agr & Environm, Perth, WA, Australia; 2.Curtin Univ, Dept Environm & Agr, Ctr Mine Site Restorat, Perth, WA, Australia; 3.Univ Western Australia, Fac Sci, Sch Biol Sci, Perth, WA, Australia; 4.Swedish Univ Agr Sci, Dept Biosyst & Technol, Alnarp, Sweden; 5.Queens Univ Belfast, Sch Biol Sci, Belfast, Antrim, North Ireland; 6.CSIRO Agr & Food, Urrbrae, SA, Australia
推荐引用方式 GB/T 7714	Moreira-Grez, Benjamin,Tam, Kang,Cross, Adam T.,et al. The Bacterial Microbiome Associated With Arid Biocrusts and the Biogeochemical Influence of Biocrusts Upon the Underlying Soil[J]. Commonwealth Scientific and Industrial Research Organisation, University of Western Australia,2019,10.
APA	Moreira-Grez, Benjamin.,Tam, Kang.,Cross, Adam T..,Yong, Jean W. H..,Kumaresan, Deepak.,...&Whiteley, Andrew S..(2019).The Bacterial Microbiome Associated With Arid Biocrusts and the Biogeochemical Influence of Biocrusts Upon the Underlying Soil.FRONTIERS IN MICROBIOLOGY,10.
MLA	Moreira-Grez, Benjamin,et al."The Bacterial Microbiome Associated With Arid Biocrusts and the Biogeochemical Influence of Biocrusts Upon the Underlying Soil".FRONTIERS IN MICROBIOLOGY 10(2019).