Microbial stress mediated intercellular nanotubes in an anaerobic microbial consortium digesting cellulose

John, Martina and Trzcinski, Antoine Prandota and Zhou, Yan and Ng, Wun Jern (2017) Microbial stress mediated intercellular nanotubes in an anaerobic microbial consortium digesting cellulose. Scientific Reports, 7.

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Abstract

The anaerobic digestion process is a multi - step reaction dependent on concerted activities such
as exchange of metabolites among physiologically diferent microbial communities. This study
investigated the impact of iron oxide nanoparticles on the anaerobic sludge microbiota. It was shown
there were three distinct microbial phases following addition of the nanoparticles: microbial stress and
cell death of approximately one log order of magnitude, followed by microbial rewiring, and recovery.
Furthermore, it was noted that cellular stress led to the establishment of intercellular nanotubes within
the microbial biomass. Intercellular nanotube - mediated communication among genetically engineered
microorganisms and ad hoc assembled co - cultures have been previously reported. This study presents
evidence of intercellular nanotube formation within an environmental sample – i.e., anaerobic sludge
microbiota subjected to stress. Our observations suggested a mode of microbial communication in the
anaerobic digestion process not previously explored and which may have implications on bioreactor
design and microbial functions.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 22 Jan 2018 02:10
Last Modified: 22 Jan 2018 02:10
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes
09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
05 Environmental Sciences > 0502 Environmental Science and Management > 050205 Environmental Management
Socio-Economic Objective: D Environment > 96 Environment > 9609 Land and Water Management > 960912 Urban and Industrial Water Management
Identification Number or DOI: 10.1038/s41598-017-18198-w
URI: http://eprints.usq.edu.au/id/eprint/33512

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