Symbiosis between nanohaloarchaeon and haloarchaeon is based on utilization of different polysaccharides

  • Violetta La Cono
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Enzo Messina
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Manfred Rohde
    Central Facility for Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany;
  • Erika Arcadi
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Sergio Ciordia
    Proteomics Unit, National Center for Biotechnology, Spanish National Research Council, 28049 Madrid, Spain;
  • Francesca Crisafi
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Renata Denaro
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Manuel Ferrer
    Institute of Catalysis, Spanish National Research Council, 28049 Madrid, Spain;
  • Laura Giuliano
    Mediterranean Science Commission (CIESM), 98000 Monaco;
  • Peter N. Golyshin
    Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, LL57 2UW Bangor, United Kingdom;
  • Olga V. Golyshina
    Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, LL57 2UW Bangor, United Kingdom;
  • John E. Hallsworth
    Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, BT9 5DL Northern Ireland, United Kingdom;
  • Gina La Spada
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Maria C. Mena
    Proteomics Unit, National Center for Biotechnology, Spanish National Research Council, 28049 Madrid, Spain;
  • Alexander Y. Merkel
    Winogradsky Institute of Microbiology, Research Centre of Biotechnology, Russian Academy of Sciences, 117312 Moscow, Russia;
  • Margarita A. Shevchenko
    Institute of Living Systems, Immanuel Kant Baltic Federal University, 236016 Kaliningrad, Russia;
  • Francesco Smedile
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;
  • Dimitry Y. Sorokin
    Winogradsky Institute of Microbiology, Research Centre of Biotechnology, Russian Academy of Sciences, 117312 Moscow, Russia;
  • Stepan V. Toshchakov
    Department of Genome Research, National Research Center “Kurchatov Institute,” 123098 Moscow, Russia
  • Michail M. Yakimov
    Institute for Biological Resources and Marine Biotechnologies, Italian National Research Council, 98122 Messina, Italy;

抄録

<jats:title>Significance</jats:title> <jats:p> We report on cultivation and characterization of an association between <jats:italic>Candidatus</jats:italic> Nanohalobium constans and its host, the chitinotrophic haloarchaeon <jats:italic>Halomicrobium</jats:italic> LC1Hm, obtained from a crystallizer pond of marine solar salterns. High-quality nanohaloarchael genome sequence in conjunction with electron- and fluorescence microscopy, growth analysis, and proteomic and metabolomic data revealed mutually beneficial interactions between two archaea, and allowed dissection of the mechanisms for these interactions. Owing to their ubiquity in hypersaline environments, Nanohaloarchaeota may play a role in carbon turnover and ecosystem functioning, yet insights into the nature of this have been lacking. Here, we provide evidence that nanohaloarchaea can expand the range of available substrates for the haloarchaeon, suggesting that the ectosymbiont increases the metabolic capacity of the host. </jats:p>

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