DOI: 10.1073/pnas.1917265117
论文题名: Ecological drivers of bacterial community assembly in synthetic phycospheres
作者: Fu H. ; Uchimiya M. ; Gore J. ; Moran M.A.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期: 7 起始页码: 3656
结束页码: 3662
语种: 英语
英文关键词: Community assembly
; Phycospheres
; Phytoplankton–bacteria interactions
Scopus关键词: Article
; cell component
; ecology
; microbial community
; nonhuman
; phycosphere
; phytoplankton
; priority journal
; species composition
; bacterium
; classification
; ecosystem
; genetics
; growth, development and aging
; heterotrophy
; isolation and purification
; metabolism
; microbiology
; microflora
; phylogeny
; sea water
; Bacteria
; Ecosystem
; Heterotrophic Processes
; Microbiota
; Phylogeny
; Phytoplankton
; Seawater
英文摘要: In the nutrient-rich region surrounding marine phytoplankton cells, heterotrophic bacterioplankton transform a major fraction of recently fixed carbon through the uptake and catabolism of phytoplankton metabolites. We sought to understand the rules by which marine bacterial communities assemble in these nutrient-enhanced phycospheres, specifically addressing the role of host resources in driving community coalescence. Synthetic systems with varying combinations of known exometabolites of marine phytoplankton were inoculated with seawater bacterial assemblages, and communities were transferred daily to mimic the average duration of natural phycospheres. We found that bacterial community assembly was predictable from linear combinations of the taxa maintained on each individual metabolite in the mixture, weighted for the growth each supported. Deviations from this simple additive resource model were observed but also attributed to resource-based factors via enhanced bacterial growth when host metabolites were available concurrently. The ability of photosynthetic hosts to shape bacterial associates through excreted metabolites represents a mechanism by which microbiomes with beneficial effects on host growth could be recruited. In the surface ocean, resource-based assembly of host-associated communities may underpin the evolution and maintenance of microbial interactions and determine the fate of a substantial portion of Earth’s primary production. © 2020 National Academy of Sciences. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164324
Appears in Collections: 气候变化与战略
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作者单位: Fu, H., Department of Marine Sciences, University of Georgia, Athens, GA 30602, United States; Uchimiya, M., Department of Marine Sciences, University of Georgia, Athens, GA 30602, United States, Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, United States; Gore, J., Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Moran, M.A., Department of Marine Sciences, University of Georgia, Athens, GA 30602, United States
Recommended Citation:
Fu H.,Uchimiya M.,Gore J.,et al. Ecological drivers of bacterial community assembly in synthetic phycospheres[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(7)