干旱区生态环境知识资源中心(Arid): Trophic Selective Pressures Organize the Composition of Endolithic Microbial Communities From Global Deserts

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DOI	10.3389/fmicb.2019.02952
	Trophic Selective Pressures Organize the Composition of Endolithic Microbial Communities From Global Deserts
	Qu, Evan B.; Omelon, Chris R.; Oren, Aharon; Meslier, Victoria; Cowan, Don A.; Maggs-Kolling, Gillian; DiRuggiero, Jocelyne
通讯作者	DiRuggiero, J (corresponding author), Johns Hopkins Univ, Dept Biol, Baltimore, MD 21218 USA.
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2020
卷号	10
英文摘要	Studies of microbial biogeography are often convoluted by extremely high diversity and differences in microenvironmental factors such as pH and nutrient availability. Desert endolithic (inside rock) communities are relatively simple ecosystems that can serve as a tractable model for investigating long-range biogeographic effects on microbial communities. We conducted a comprehensive survey of endolithic sandstones using high-throughput marker gene sequencing to characterize global patterns of diversity in endolithic microbial communities. We also tested a range of abiotic variables in order to investigate the factors that drive community assembly at various trophic levels. Macroclimate was found to be the primary driver of endolithic community composition, with the most striking difference witnessed between hot and polar deserts. This difference was largely attributable to the specialization of prokaryotic and eukaryotic primary producers to different climate conditions. On a regional scale, microclimate and properties of the rock substrate were found to influence community assembly, although to a lesser degree than global hot versus polar conditions. We found new evidence that the factors driving endolithic community assembly differ between trophic levels. While phototrophic taxa, mostly oxygenic photosynthesizers, were rigorously selected for among different sites, heterotrophic taxa were more cosmopolitan, suggesting that stochasticity plays a larger role in heterotroph assembly. This study is the first to uncover the global drivers of desert endolithic diversity using high-throughput sequencing. We demonstrate that phototrophs and heterotrophs in the endolithic community assemble under different stochastic and deterministic influences, emphasizing the need for studies of microorganisms in context of their functional niche in the community.
英文关键词	endolithic desert xerotolerant biogeography trophic level microbial assembly
类型	Article
语种	英语
开放获取类型	Green Submitted, Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000615586000001
WOS类目	Microbiology
WOS研究方向	Microbiology
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369182
作者单位	[Qu, Evan B.; Meslier, Victoria; DiRuggiero, Jocelyne] Johns Hopkins Univ, Dept Biol, Baltimore, MD 21218 USA; [Omelon, Chris R.] Queens Univ, Dept Geog & Planning, Kingston, ON, Canada; [Oren, Aharon] Hebrew Univ Jerusalem, Inst Life Sci, Jerusalem, Israel; [Cowan, Don A.] Univ Pretoria, Dept Biochem Genet & Microbiol, Ctr Microbial Ecol & Genom, Pretoria, South Africa; [Maggs-Kolling, Gillian] Gobabeb Namib Res Inst, Walvis Bay, Namibia
推荐引用方式 GB/T 7714	Qu, Evan B.,Omelon, Chris R.,Oren, Aharon,et al. Trophic Selective Pressures Organize the Composition of Endolithic Microbial Communities From Global Deserts[J]. Hebrew University of Jerusalem,2020,10.
APA	Qu, Evan B..,Omelon, Chris R..,Oren, Aharon.,Meslier, Victoria.,Cowan, Don A..,...&DiRuggiero, Jocelyne.(2020).Trophic Selective Pressures Organize the Composition of Endolithic Microbial Communities From Global Deserts.FRONTIERS IN MICROBIOLOGY,10.
MLA	Qu, Evan B.,et al."Trophic Selective Pressures Organize the Composition of Endolithic Microbial Communities From Global Deserts".FRONTIERS IN MICROBIOLOGY 10(2020).