Difference between microbial nanowire and microbial nanotube
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Article
Open Access
Published: 21 December 2017
Microbial stress mediated intercellular nanotubes in an anaerobic microbial consortium digesting cellulose
Martina John, Antoine Prandota Trzcinski, […]Wun Jern Ng
Scientific Reportsvolume 7, Article number: 18006 (2017) | Download Citation
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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 different 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.