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- Title
Positive, Neutral and Negative Interactions in Cocultures between Pyrococcus furiosus and Different Methanogenic Archaea.
- Authors
Weiner, Agnes; Schopf, Simone; Wanner, Gerhard; Probst, Alexander; Wirth, Reinhard
- Abstract
The model organism Pyrococcus furiosus has recently been reported to interact with Methanopyrus kandleri in coculture, suggesting a H2 symbiosis. In the current study we further investigated this hypothesis by growing P. furiosus with four other hyperthermophilic methanogens providing evidence that the organisms did not only exert positive effects (P. furiosus/Methanocaldococcus villosus and P. furiosus/Methanocaldococcus infernus) on each other, but also neutral (P. furiosus/Methanocaldococcus jannaschii) and even inhibitory interactions (P. furiosus/Methanotorris igneus) were detected suggesting interspecies relationships not only based on H2 symbiosis. Using various microscopic techniques we further analyzed the coculture with the highest positive interactions (P. furiosus/ M. villosus) concerning its growth behavior on various surfaces, which turned out to be in stark contrast to the previous reported coculture of P. furiosus/M. kandleri. This communication provides new insights into possible interactions of extremophilic Archaea in cocultures and again raises the question if and how hyperthermophilic Archaea communicate besides metabolic intermediates like H2.
- Subjects
PYROCOCCUS furiosus; METHANOGENS; BACTERIA; SYMBIOSIS; METHANOCALDOCOCCUS jannaschii
- Publication
Microbiology Insights, 2012, Issue 5, p1
- ISSN
1178-6361
- Publication type
Academic Journal
- DOI
10.4137/MBI.S8516