干旱区生态环境知识资源中心(Arid): Microbiome Dynamics Associated With the Atacama Flowering Desert

Arid

DOI	10.3389/fmicb.2019.03160
	Microbiome Dynamics Associated With the Atacama Flowering Desert
	Araya, Juan Pablo 1; Gonzalez, Maximo 1; Cardinale, Massimiliano 2,3; Schnell, Sylvia 3; Stoll, Alexandra 1,4
通讯作者	Stoll, Alexandra
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2020
卷号	10
英文摘要	In a desert, plants as holobionts quickly respond to resource pulses like precipitation. However, little is known on how environment and plants modulate the rhizosphere-associated microbiome. As a model species to represent the Atacama Desert bloom, Cistanthe longiscapa (Montiaceae family) was selected to study the influence of abiotic and biotic environment on the diversity and structure of the microbiota associated to its rhizosphere. We analyzed the rhizosphere and soil microbiome along a North-South precipitation gradient and between a dry and rainy year by using Illumina high-throughput sequencing of 16S rRNA gene fragments and ITS2 regions for prokaryotes and fungi, respectively. In the rhizosphere of C. longiscapa the microbiota clearly differs in composition and structure from the surrounding bulk soil. The fungal and bacterial communities respond differently to environmental conditions. The diversity and richness of fungal OTUs were negatively correlated with aridity, as predicted. The community structure was predominantly influenced by other soil characteristics (pH, organic matter content) but not by aridity. In contrast, diversity, composition, and structure of the bacterial community were not influenced by aridity or any other evaluated soil parameter. These findings coincide with the identification of mainly site-specific microbial communities, not shared along the sites. These local communities contain a group of OTUs, which are exclusive to the rhizosphere of each site and presumably vertically inherited as seed endophytes. Their ecological functions and dispersal mechanisms remain unclear. The analysis of co-occurrence patterns highlights the strong effect of the desert habitat over the soil- and rhizosphere-microbiome. The site-independent enrichment of only a small bacterial cluster consistently associated with the rhizosphere of C. longiscapa further supports this conclusion. In a rainy year, the rhizosphere microbiota significantly differed from bulk and bare soil, whereas in a dry year, the community structure of the former rhizosphere approximates to the one found in the bulk. In the context of plant-microbe interactions in desert environments, our study contributes new insights into the importance of aridity in microbial community structure and composition, discovering the influence of other soil parameters in this complex dynamic network, which needs further to be investigated.
英文关键词	Cistanthe longiscapa Atacama Desert desert bloom precipitation gradient rhizosphere community core microbiome co-occurrence patterns
类型	Article
语种	英语
国家	Chile ; Italy ; Germany
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000511456800001
WOS关键词	DIVERSITY ; RHIZOSPHERE ; BIOGEOGRAPHY ; COMMUNITIES ; STRATEGIES ; DATABASE ; ECOLOGY
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/2XILL650/314549
作者单位	1.Ctr Estudios Avanzados Zonas Aridas, La Serena, Chile; 2.Univ Salento, Dept Biol & Environm Sci & Technol, Lecce, Italy; 3.Justus Liebig Univ Giessen, Inst Appl Microbiol, Giessen, Germany; 4.Univ La Serena, Inst Invest Multidisciplinario Ciencia & Tecnol, La Serena, Chile
推荐引用方式 GB/T 7714	Araya, Juan Pablo,Gonzalez, Maximo,Cardinale, Massimiliano,et al. Microbiome Dynamics Associated With the Atacama Flowering Desert[J],2020,10.
APA	Araya, Juan Pablo,Gonzalez, Maximo,Cardinale, Massimiliano,Schnell, Sylvia,&Stoll, Alexandra.(2020).Microbiome Dynamics Associated With the Atacama Flowering Desert.FRONTIERS IN MICROBIOLOGY,10.
MLA	Araya, Juan Pablo,et al."Microbiome Dynamics Associated With the Atacama Flowering Desert".FRONTIERS IN MICROBIOLOGY 10(2020).