干旱区生态环境知识资源中心(Arid): Cyanobacterial community composition and their functional shifts associated with biocrust succession in the Gurbantunggut Desert

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DOI	10.1111/1758-2229.13011
	Cyanobacterial community composition and their functional shifts associated with biocrust succession in the Gurbantunggut Desert
	Lan, Shubin; Thomas, Andrew David; Rakes, Julie Bethany; Garcia-Pichel, Ferran; Li Wu; Hu, Chunxiang
通讯作者	Lan, SB (corresponding author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
来源期刊	ENVIRONMENTAL MICROBIOLOGY REPORTS
ISSN	1758-2229
出版年	2021-09
英文摘要	Cyanobacteria, as key biocrust components, provide a variety of ecosystem functions in drylands. In this study, to identify whether a cyanobacterial community shift is involved in biocrust succession and whether this is linked to altered ecological functions, we investigated cyanobacterial composition, total carbon and nitrogen contents of biocrusts in the Gurbantunggut Desert. Our findings showed that the biocrust cyanobacteria in the Gurbantunggut desert were mostly filamentous, coexisting with abundant unicellular colonial Chroococcidiopsis. Heterocystous Nostoc, Scytonema and Tolypothrix always represented the majority of biocrust nitrogen-fixing organisms, comprising an average of 92% of the nifH gene reads. Community analysis showed a clear shift in prokaryotic community composition associated with biocrust succession from cyanobacteria- to lichen- and moss-dominated biocrusts, and filamentous non-nitrogen-fixing cyanobacteria-dominated communities were gradually replaced by nitrogen-fixing and unicellular colonial communities. Along the succession, there were concomitant reductions in cyanobacterial relative abundance, whereas Chl-a, total carbon and nitrogen contents increased. Concurrently, distinct carbon and nitrogen stores shifts occurred, implying that the main ecological contribution of cyanobacteria in biocrusts changes from carbon- to nitrogen-fixation along with the succession. Our results suggest that any activity that reverses biocrust succession will influence cyanobacterial community composition and eventually lead to large reductions in soil carbon and nitrogen stores.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000696564100001
WOS关键词	BIOLOGICAL SOIL CRUSTS ; MICROBIAL ACTIVITY ; COLORADO PLATEAU ; CO2 EFFLUX ; DIVERSITY ; CARBON ; PATTERNS ; NITROGEN ; DECREASES ; FIXATION
WOS类目	Environmental Sciences ; Microbiology
WOS研究方向	Environmental Sciences & Ecology ; Microbiology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363125
作者单位	[Lan, Shubin; Hu, Chunxiang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China; [Thomas, Andrew David] Aberystwyth Univ, Dept Geog & Earth Sci, Aberystwyth SY23 3DB, Dyfed, Wales; [Rakes, Julie Bethany; Garcia-Pichel, Ferran] Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA; [Rakes, Julie Bethany; Garcia-Pichel, Ferran] Arizona State Univ, Ctr Fundamental & Appl Microbi, Tempe, AZ 85287 USA; [Li Wu] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Lan, Shubin,Thomas, Andrew David,Rakes, Julie Bethany,et al. Cyanobacterial community composition and their functional shifts associated with biocrust succession in the Gurbantunggut Desert[J]. Arizona State University,2021.
APA	Lan, Shubin,Thomas, Andrew David,Rakes, Julie Bethany,Garcia-Pichel, Ferran,Li Wu,&Hu, Chunxiang.(2021).Cyanobacterial community composition and their functional shifts associated with biocrust succession in the Gurbantunggut Desert.ENVIRONMENTAL MICROBIOLOGY REPORTS.
MLA	Lan, Shubin,et al."Cyanobacterial community composition and their functional shifts associated with biocrust succession in the Gurbantunggut Desert".ENVIRONMENTAL MICROBIOLOGY REPORTS (2021).