Intergeneric transfer of streptomycin-resistance marker between two blue-green algae

  • H D Kumar
  • M B Tyagi
Genetics/Molecular Biology


Intergeneric transfer of streptomycin-resistance marker from a unicellular blue-green algaAnacystis nidulans to a filamentous blue-green algaAnabaena doliolum was demonstrated. Mutants ofA. nidulans resistant to streptomycin, occurring spontaneously or mutagenically-induced could be isolated easily. Naturally occurring streptomycin-resistant mutants ofA. doliolum could not be detected. Attempts at isolating such mutants either in nitrogen-free medium or in nitrate containing medium were unsuccessful. However, a streptomycin-resistant strain (recombinant) ofA. doliolum could be isolated in a mixed culture of streptomycin-sensitiveA. doliolum and streptomycin-resistantA. nidulans.


Intergeneric-cross streptomycin-resistance Anabaenadoliolum Anacystis nidulans genetic recombination 


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Copyright information

© Indian Academy of Sciences 1978

Authors and Affiliations

  • H D Kumar
    • 1
  • M B Tyagi
    • 1
  1. 1.Department of BotanyBanaras Hindu UniversityVaranasi

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