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A THERMOPHILIC CHEMOLITHOAUTOTROPHIC BACTERIAL CONSORTIUM SUGGESTS A MUTUAL RELATIONSHIP BETWEEN BACTERIA IN EXTREME OLIGOTROPHIC ENVIRONMENTS
Consórcio sugere uma relação mútua entre bactérias
Em ambientes oligotróficos extremos
Suggests a mutual relationship between bacteria
In extreme oligotrophic environments
Author
Affilliation
Universidade Federal do Rio de Janeiro. Instituto de Microbiologia. Rio de janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Computacional e de Sistemas. Rio de Janeiro, RJ, Brasil.
Red Sea Research Center (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia / Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
Microbial Ecology, Groningen University, Groningen, the Netherlands.
Universidade Federal do Rio de Janeiro. Instituto de Microbiologia. Rio de janeiro, RJ, Brasil.
Department of Land, Air, and Water Resources, University of California Davis, Davis, CA, USA.
Red Sea Research Center (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia / Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia / Bioscience Program, Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Computacional e de Sistemas. Rio de Janeiro, RJ, Brasil.
Red Sea Research Center (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia / Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
Microbial Ecology, Groningen University, Groningen, the Netherlands.
Universidade Federal do Rio de Janeiro. Instituto de Microbiologia. Rio de janeiro, RJ, Brasil.
Department of Land, Air, and Water Resources, University of California Davis, Davis, CA, USA.
Red Sea Research Center (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia / Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia / Bioscience Program, Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
Abstract
A thermophilic, chemolithoautotrophic, and aerobic microbial consortium (termed carbonitroflex)
growing in a nutrient-poor medium and an atmosphere containing N2, O2, CO2, and
CO is investigated as a model to expand our understanding of extreme biological systems.
Here we show that the consortium is dominated by Carbonactinospora thermoautotrophica
(strain StC), followed by Sphaerobacter thermophilus, Chelatococcus spp., and Geobacillus spp.
Metagenomic analysis of the consortium reveals a mutual relationship among bacteria, with
C. thermoautotrophica StC exhibiting carboxydotrophy and carbon-dioxide storage capacity. C.
thermoautotrophica StC, Chelatococcus spp., and S. thermophilus harbor genes encoding CO
dehydrogenase and formate oxidase. No pure cultures were obtained under the original
growth conditions, indicating that a tightly regulated interactive metabolism might be
required for group survival and growth in this extreme oligotrophic system. The breadwinner
hypothesis is proposed to explain the metabolic flux model and highlight the vital role of C.
thermoautotrophica StC (the sole keystone species and primary carbon producer) in the
survival of all consortium members. Our data may contribute to the investigation of complex
interactions in extreme environments, exemplifying the interconnections and dependency
within microbial communities.
Keywords in Portuguese
Bactéria termofílica quimiolitoautotróficaConsórcio sugere uma relação mútua entre bactérias
Em ambientes oligotróficos extremos
Keywords
Thermophilic chemolithoautotrophic bacterial consortiumSuggests a mutual relationship between bacteria
In extreme oligotrophic environments
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