干旱区生态环境知识资源中心(Arid): Composition, Predicted Functions and Co-occurrence Networks of Rhizobacterial Communities Impacting Flowering Desert Events in the Atacama Desert, Chile

Arid

DOI	10.3389/fmicb.2020.00571
	Composition, Predicted Functions and Co-occurrence Networks of Rhizobacterial Communities Impacting Flowering Desert Events in the Atacama Desert, Chile
	Astorga-Elo, Marcia 1,2; Zhang, Qian 3; Larama, Giovanni 2; Stoll, Alexandra 4; Sadowsky, Michael J.3,5,6; Jorquera, Milko A.2,7
通讯作者	Jorquera, Milko A.
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2020
卷号	11
英文摘要	Flowering desert (FD) events consist of the rapid flowering of a wide variety of native plants in the Atacama Desert of Chile, which is categorized as the driest desert in the world. While ephemeral plants are an integral part of the desert ecosystem, there is little knowledge on plant-microbe interactions that occur during FD events. Consequently, the overall goals of this present study were to investigate changes in the composition and potential functions of rhizobacterial community of Cistanthe longiscapa (Montiaceae) during the 2014 and 2015 FD events and determine the composition, potential functions, and co-occurrence networks of rhizobacterial community associated with the root zone of C. longiscapa during pre- (PF) and full-flowering (FF) phenological stages. Results of this study showed that the Proteobacteria and Actinobacteria were the dominant taxa in rhizosphere soils during the three FD events (2014, 2015, and 2017) examined. In general, greater microbial richness and diversity were observed in rhizosphere soils during the 2015-, compared with the 2014-FD event. Similarly, predicted functional analyses indicated that a larger number of sequences were assigned to information processing (e.g., ion channel, transporters and ribosome) and metabolism (e.g., lipids, nitrogen, and sulfur) during 2015 compared with 2014. Despite the lack of significant differences in diversity among PF and FF stages, the combined analysis of rhizobacterial community data, along with data concerning rhizosphere soil properties, evidenced differences among both phenological stages and suggested that sodium is a relevant abiotic factor shaping the rhizosphere. In general, no significant differences in predicted functions (most of them assigned to chemoheterotrophy, magnesium metabolisms, and fermentation) were observed among PF and FF. Co-occurrence analysis revealed the complex rhizobacterial interactions that occur in C. longiscapa during FD, highlighting to Kouleothrixaceae family as keystone taxa. Taken together this study shows that the composition and function of rhizobacteria vary among and during FD events, where some bacterial groups and their activity may influence the growth and flowering of native plants, and therefore, the ecology and trophic webs in Atacama Desert.
英文关键词	Atacama Desert rhizobacterial community Cistanthe longiscapa flowering desert high-throughput sequencing co-occurrence network
类型	Article
语种	英语
国家	Chile ; USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000529009000001
WOS关键词	HYPER-ARID SOILS ; MICROBIAL COMMUNITIES ; NITROGEN-METABOLISM ; RHIZOSPHERE ; DIVERSITY ; PLANTS ; GREENGENES ; DISCOVERY ; ABUNDANCE ; RESPONSES
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/2XILL650/314554
作者单位	1.Univ La Frontera, Programa Doctorado Ciencias Recursos Nat, Temuco, Chile; 2.Univ La Frontera, Dept Ciencias Quim & Recursos Nat, Lab Ecol Microbiana Aplicada EMALAB, Temuco, Chile; 3.Univ Minnesota, BioTechnol Inst, St Paul, MN 55108 USA; 4.CEAZA, La Serena, Chile; 5.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA; 6.Univ Minnesota, Dept Plant & Microbial Biol, St Paul, MN 55108 USA; 7.Univ La Frontera, Network Extreme Environm Res NEXER Sci & Biotechn, Temuco, Chile
推荐引用方式 GB/T 7714	Astorga-Elo, Marcia,Zhang, Qian,Larama, Giovanni,et al. Composition, Predicted Functions and Co-occurrence Networks of Rhizobacterial Communities Impacting Flowering Desert Events in the Atacama Desert, Chile[J],2020,11.
APA	Astorga-Elo, Marcia,Zhang, Qian,Larama, Giovanni,Stoll, Alexandra,Sadowsky, Michael J.,&Jorquera, Milko A..(2020).Composition, Predicted Functions and Co-occurrence Networks of Rhizobacterial Communities Impacting Flowering Desert Events in the Atacama Desert, Chile.FRONTIERS IN MICROBIOLOGY,11.
MLA	Astorga-Elo, Marcia,et al."Composition, Predicted Functions and Co-occurrence Networks of Rhizobacterial Communities Impacting Flowering Desert Events in the Atacama Desert, Chile".FRONTIERS IN MICROBIOLOGY 11(2020).