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Metabarcoding of the kombucha microbial community grown in different microenvironments
Environmental DNA sequencing revealed a complex and flexible composition of the kombucha microbial culture (KMC) constituting more bacterial and fungal organisms in addition to those found by cultural method, including cultured and uncultivable microorganisms. Expand
Kombucha Multimicrobial Community under Simulated Spaceflight and Martian Conditions.
In the tests that simulated a 1-year mission of exposure outside the International Space Station, the core populations of bacteria and yeasts survived and provided protection against UV; however, the microbial density of the populations overall was reduced, which was revealed by implementation of culture-dependent and culture-independent methods. Expand
Multimicrobial Kombucha Culture Tolerates Mars-Like Conditions Simulated on Low-Earth Orbit.
A kombucha multimicrobial culture was exposed to simulated Mars-like conditions in low-Earth orbit (LEO) and after a series of subculturing, the revived communities restored partially their structure and associated activities. Expand
Bacterial cellulose may provide the microbial-life biosignature in the rock records
Bacterial cellulose (BC) is a matrix for a biofilm formation, which is critical for survival and persistence of microbes in harsh environments. BC could play a significant role in the formation of… Expand
Temperate bacteriophages collected by outer membrane vesicles in Komagataeibacter intermedius
- A. Kharina, O. Podolich, +8 authors N. Kozyrovska
- Biology, Medicine
- Journal of basic microbiology
- 1 April 2015
This is the first description of myoviruses affiliated to K. intermedius, as well as outer membrane vesicles interaction with phages within this host, and acted as the collectors of formed phage particles, using outer membrane receptors for phage detection and defensive functions, preventing bacteriophage spread outside population. Expand
The First Space-Related Study of a Kombucha Multimicrobial Cellulose-Forming Community: Preparatory Laboratory Experiments
- O. Podolich, I. Zaets, +14 authors N. Kozyrovska
- Chemistry, Medicine
- Origins of Life and Evolution of Biospheres
- 1 June 2017
A new experimental model is offered to assess a structural integrity of a widespread microbial polymer – cellulose – as a biosignature of bacteria-producers for the multipurpose international project “BIOlogical and Mars Experiment (BIOMEX”, which aims to study the vitality of pro- and eukaryotic organisms and the stability of organic biomolecules in contact with minerals. Expand
Fitness of Outer Membrane Vesicles From Komagataeibacter intermedius Is Altered Under the Impact of Simulated Mars-like Stressors Outside the International Space Station
- O. Podolich, O. Kukharenko, +19 authors N. Kozyrovska
- Medicine, Chemistry
- Frontiers in Microbiology
- 26 June 2020
OMVs, originating from rationally selected nonpathogenic Gram-negative bacteria, can be considered as candidates in the design of postbiotics or edible mucosal vaccines for in situ production in extreme environment and could also be used as promising delivery vectors for applications in Astromedicine. Expand
Robust symbiotic microbial communities in space research
The potential of the kombucha culture for outposts in far future missions is discussed, which is true for long-term expeditions, outposts, extraterrestrial permanently-manned bases where humans are exposed to adverse environmental factors, weakening the immune system. Expand
Bacterial Cellulose Retains Robustness but Its Synthesis Declines After Exposure to a Mars-Like Environment Simulated Outside the International Space Station.
Cellulose is a widespread macromolecule in terrestrial environments and a major architectural component of microbial biofilm. Therefore, cellulose might be considered a biosignature that indicates… Expand
Shotgun Metagenomic Analysis of Kombucha Mutualistic Community Exposed to Mars-like Environment outside the International Space Station.
- A. Góes-Neto, O. Kukharenko, +12 authors D. Barh
- Biology, Medicine
- Environmental microbiology
- 21 January 2021
This study revealed that the long-term exposure to space/Mars-like conditions on low Earth orbit may disorganize the KMC to such extent that it will not restore the initial community structure; however, KMC core microorganisms of the community were maintained and there were no significant differences in the community functions, meaning that the K MC communities are ecologically resilient. Expand