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    • B S Kundu

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    • Volume 3 Issue 2 June 1981 pp 117-123

      In vitro andin vivo nitrogenase activity ofRhizobium mutants and their symbiotic effectivity

      K R Dadarwal B S Kundu P Tauro

      More Details Abstract Fulltext PDF

      A slow growing nitrogen-fixing strain ofVigna radiata var.aureus (mung bean)Rhizobium which expressed nitrogenase activity in a synthetic medium was isolated from its native population. Mutants with decreased and increased nitrogenase activity were derived from this strain by treatment with acridine orange and ethidium bromide. These mutants were tested for symbiotic effectivity invivo. The effectivity of mutants with decreased nitrogenase activity in the culture medium was lower than the parent strain; however, the effectivity of mutants with higher nitrogenase activity did not increase above that of the parent. This suggests that the plant is perhaps a limiting factor in the full expression of rhizobial nitrogenase in the nodules.

    • Volume 12 Issue 1 March 1987 pp 51-54

      Nitrification and simultaneous denitrification byAzospirillum brasilense 12S

      B S Kundu K R Dadarwal P Tauro

      More Details Abstract Fulltext PDF

      Azospirillum brasilense, an associative diazotrophs from sorghum roots grows autotrophically on NH4+ and CaCO3. NH4+ a is also oxidized to NO2- and then denitrified. Addition of malate to the autotrophic medium enhances both NH4+ oxidation as well as NONH2- dissimilation. The incomplete nitrification linked denitrification results in a rapid loss of nitrogen from the growth medium. The bacterium also shows assimilatory NO3- and NO2- reductases and fixes nitrogen at 50 μg N/ml of NH4+ NO3- or NO2-

  • Journal of Biosciences | News

      Forthcoming Special issue.


    • To trigger further research on plant mitochondria, the Journal of Biosciences is bringing out a special issue titled "Plant Mitochondria: Properties and Interactions with Other Organelles".


      Plant mitochondria are quite distinct and have unique features, such as a cyanide-insensitive alternate pathway. They also interact with chloroplasts to optimize photosynthetic carbon assimilation.


      Submissions are welcome until 30 July 2023. The contributions can be original articles, short communications, reviews, or mini-reviews on any topic related to plant mitochondria.


      Authors can submit their articles online at https://www.editorialmanager.com/jbsc/default2.aspx

      Posted on April 12, 2023
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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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