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Plant and Soil

, Volume 137, Issue 1, pp 151–155 | Cite as

Effects of antibiotic treatments onAzolla-Anabaena andArthrobacter

  • C. Forni
  • E. Tel-or
  • E. Bar
  • M. Grilli Caiola
Article

Abstract

The leaf cavities and the sporocarps of the water fernAzolla contain bacteria belonging to the genusArthrobacter Conn and Dimmick. The number of these bacteria can be decreased by treating the plants with novobiocin and erythromycin. The latter antibiotic kills theAnabaena, soAnabaena free plants can be obtained. In these plants the bacteria disappear almost completely. The novobiocin does not affect the heterocyst differentiation, but it decreases the N2-fixation activity by affecting the synthesis of the dinitrogenase reductase.

Key words

Anabaena Arthrobacter Azolla erythromycin novobiocin 

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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • C. Forni
    • 1
  • E. Tel-or
    • 2
  • E. Bar
    • 2
  • M. Grilli Caiola
    • 1
  1. 1.Department of BiologyII University of RomeRomeItaly
  2. 2.Department of Agricultural BotanyHebrew University of Jerusalem, Faculty AgricultureRehovotIsrael

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