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Folia Microbiologica

, 37:223 | Cite as

Phosphorus deficiency, nitrogen assimilation and akinete differentiation in the cyanobacteriumAnabaena torulosa

  • T. A. Sarma
  • J. I. S. Khattar
Papers

Abstract

Anabaena torulosa is unable to fix N2 and to differentiate akinetes in a P-deficient nitrate-free medium. In a P-deficient medium with nitrate, the NO3 assimilation and period of akinete differentiation are of the same order of magnitude as in a P-containing nitrate medium. It is suggested that regulation of akinete differentiation in P-deficient organism proceeds through the regulation of the N-assimilating system. At the time of akinete differentiation, cellular P is excreted into the medium which leads to a decrease of cellular P.

Keywords

Acetylene Reduction Assay Brucine Phosphate Deficiency Akinete Formation Akinete Differentiation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Institute of Microbiology, Academy of Sciences of the Czech Republic 1992

Authors and Affiliations

  • T. A. Sarma
    • 1
  • J. I. S. Khattar
    • 1
  1. 1.Department of BotanyPunjabi UniversityPatialaIndia

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