Journal article
Phototrophic biofilm assembly in microbial-mat-derived unicyanobacterial consortia: model systems for the study of autotroph-heterotroph interactions
Frontiers in microbiology, Vol.5, pp.109-109
2014
Handle:
https://hdl.handle.net/2376/107868
PMID: 24778628
Abstract
Microbial autotroph-heterotroph interactions influence biogeochemical cycles on a global scale, but the diversity and complexity of natural systems and their intractability to
in situ
manipulation make it challenging to elucidate the principles governing these interactions. The study of assembling phototrophic biofilm communities provides a robust means to identify such interactions and evaluate their contributions to the recruitment and maintenance of phylogenetic and functional diversity over time. To examine primary succession in phototrophic communities, we isolated two unicyanobacterial consortia from the microbial mat in Hot Lake, Washington, characterizing the membership and metabolic function of each consortium. We then analyzed the spatial structures and quantified the community compositions of their assembling biofilms. The consortia retained the same suite of heterotrophic species, identified as abundant members of the mat and assigned to
Alphaproteobacteria
,
Gammaproteobacteria
, and
Bacteroidetes.
Autotroph growth rates dominated early in assembly, yielding to increasing heterotroph growth rates late in succession. The two consortia exhibited similar assembly patterns, with increasing relative abundances of members from
Bacteroidetes
and
Alphaproteobacteria
concurrent with decreasing relative abundances of those from
Gammaproteobacteria
. Despite these similarities at higher taxonomic levels, the relative abundances of individual heterotrophic species were substantially different in the developing consortial biofilms. This suggests that, although similar niches are created by the cyanobacterial metabolisms, the resulting webs of autotroph-heterotroph and heterotroph-heterotroph interactions are specific to each primary producer. The relative simplicity and tractability of the Hot Lake unicyanobacterial consortia make them useful model systems for deciphering interspecies interactions and assembly principles relevant to natural microbial communities.
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Details
- Title
- Phototrophic biofilm assembly in microbial-mat-derived unicyanobacterial consortia: model systems for the study of autotroph-heterotroph interactions
- Creators
- Jessica K Cole - Biological Sciences Division, Fundamental and Computational Sciences Directorate, Pacific Northwest National LaboratoryJanine R Hutchison - Chemical, Biological, and Physical Sciences Division, National Security Directorate, Pacific Northwest National LaboratoryRyan S Renslow - Scientific Resources Division, William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National LaboratoryYoung-Mo Kim - Biological Sciences Division, Fundamental and Computational Sciences Directorate, Pacific Northwest National LaboratoryWilliam B Chrisler - Biological Sciences Division, Fundamental and Computational Sciences Directorate, Pacific Northwest National LaboratoryHeather E Engelmann - Chemical, Biological, and Physical Sciences Division, National Security Directorate, Pacific Northwest National LaboratoryAlice C Dohnalkova - Scientific Resources Division, William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National LaboratoryDehong Hu - Scientific Resources Division, William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National LaboratoryThomas O Metz - Biological Sciences Division, Fundamental and Computational Sciences Directorate, Pacific Northwest National LaboratoryJim K Fredrickson - Biological Sciences Division, Fundamental and Computational Sciences Directorate, Pacific Northwest National LaboratoryStephen R Lindemann - Biological Sciences Division, Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory
- Publication Details
- Frontiers in microbiology, Vol.5, pp.109-109
- Academic Unit
- Chemical Engineering and Bioengineering, School of
- Publisher
- Frontiers Media S.A
- Identifiers
- 99900547106101842
- Language
- English
- Resource Type
- Journal article