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Regulation of nitrate reductase, soluble and protein nitrogen by lawsone inHelminthosporium oryzae Breda de Haan

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Summary

The mechanism of antifungal action of 2-hydroxy-1,4-naphthoquinone (lawsone) isolated from leaves ofLawsonia inermis was studied. It was found to inhibit nitrate reductase activity in vivo and in vitro. The concentration which inhibited in vivo enzyme activity also reduced ethanol-soluble and ethanol-insoluble nitrogen (protein nitrogen) content in the test organism,Helminthosporium oryzae.

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Author notes

  1. H. S. Srivastava

    Present address: Department of Life Sciences, Vigyan Bhawan, University of Indore, Khandawa Road, Indore, M.P.

Authors and Affiliations

  1. Natural Pesticides Laboratory and Department of Botany, University of Gorakhpur, 273001, Gorakhpur, U.P., India

    R. D. Tripathi, H. S. Srivastava & S. N. Dixit

Authors
  1. R. D. Tripathi
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  2. H. S. Srivastava
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  3. S. N. Dixit
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Additional information

The present study forms a part of the Ph.D. Thesis of R.D.T., University of Gorakhpur 1979.

Acknowledgment. Authors are thankful to Prof. S.N. Mathur for providing necessary facilities, Dr D. Mukerjee and K.M. Mukerjee for help in the preparation of the manuscript. R.D.T. is thankful to CSIR, New Delhi for a post doctoral fellowship.

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Tripathi, R.D., Srivastava, H.S. & Dixit, S.N. Regulation of nitrate reductase, soluble and protein nitrogen by lawsone inHelminthosporium oryzae Breda de Haan. Experientia 36, 960–961 (1980). https://doi.org/10.1007/BF01953818

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