Extremophiles

, Volume 7, Issue 5, pp 409–413

Substrate uptake in extremely halophilic microbial communities revealed by microautoradiography and fluorescence in situ hybridization

  • Ramon Rosselló-Mora
  • Natuschka Lee
  • Josefa Antón
  • Michael Wagner
Original Paper

DOI: 10.1007/s00792-003-0336-5

Cite this article as:
Rosselló-Mora, R., Lee, N., Antón, J. et al. Extremophiles (2003) 7: 409. doi:10.1007/s00792-003-0336-5

Abstract

The combination of fluorescence in situ hybridization and microautoradiography (FISH-MAR approach) was applied to brine samples of a solar saltern crystallizer pond from Mallorca (Spain) where the simultaneous occurrence of Salinibacter spp. and the conspicuous square Archaea had been detected. Radioactively labeled bicarbonate, acetate, glycerol, and an amino acid mixture were tested as substrates for the microbial populations inhabiting such brines. The results indicated that hitherto uncultured 'square Archaea' do actively incorporate amino acids and acetate. However, Salinibacter spp. only showed amino acid incorporation in pure culture, but no evidence of such activity in their natural environment could be demonstrated. No glycerol incorporation was observed for any component of the microbial community.

Keywords

Fluorescence in situ hybridizationHalophilesIn situ physiologyMicroautoradiographySalinibacterSquare archaeaUncultured microorganisms

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Ramon Rosselló-Mora
    • 1
  • Natuschka Lee
    • 2
  • Josefa Antón
    • 3
  • Michael Wagner
    • 4
  1. 1.Grup d'Oceanografia InterdisciplinarInstitut Mediterrani d'Estudis Avançats (CSIC-UIB)EsporlesSpain
  2. 2.Lehrstuhl für MikrobiologieTechnische Universität MünchenMunichGermany
  3. 3.División de Microbiología, Departamento de Fisiología, Genética y MicrobiologíaUniversidad de AlicanteSan Vicente del RaspeigSpain
  4. 4.Department of Microbial Ecology, Institute of Ecology and Conservation BiologyVienna UniversityViennaAustria