Long-living Azotobacter-Chlamydomonas association as a model system for plant-microbe interactions

Eva Preininger, Tamás Pónyi, Livia Sarkadi, Péter Nyitrai, István Gyurján

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A stable association was established between the nitrogen-fixing bacterium Azotobacter vinelandii and the unicellular green alga Chlamydomonas reinhardtii on a carbon- and nitrogen-free medium. This medium ensured a balanced ratio between the two partners, as was detected by light and electron microscopy and a molecular biological method. The respiration, photosynthetic oxygen evolution and nitrogen fixation of the associative culture were lower compared with the data obtained from pure cultures growing under optimal conditions. However, observations confirmed a cooperation that improved over time, indicating a gradual stabilization of the system.

Original languageEnglish
Pages (from-to)45-50
Number of pages6
JournalSymbiosis
Volume42
Issue number1
Publication statusPublished - Dec 1 2006

Keywords

  • Alga-bacterium association
  • Azotobacter
  • Chlamydomonas
  • Microscopy
  • Molecular detection
  • Nitrogen fixation
  • Photosynthesis

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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    Preininger, E., Pónyi, T., Sarkadi, L., Nyitrai, P., & Gyurján, I. (2006). Long-living Azotobacter-Chlamydomonas association as a model system for plant-microbe interactions. Symbiosis, 42(1), 45-50.