Mycopathologia et mycologia applicata

, Volume 43, Issue 1, pp 41–48 | Cite as

Some effects of organic acid supplementation on utilization of ammonium compounds by three pathogenic fungi

  • V. P. Sahni


Utilization of ammonium nitrogen byFusarium moniliformeSheld.,Curvularia verruciformisAgarwal &Sahni andSclerotium rolfsiiSacc., with and without organic acid supplementation was studied. Ammonium utilization by these organisms generally improved with small amounts of organic acid supplementation except in the case ofC. verruciformis on ammonium chloride where fumaric acid was observed to suppress utilization. Effects of supplementation were seen to be dependent on the nature of the organic acid, the ammonium source used and the organism employed. Further evidence obtained by varying the quantities of succinic acid in ammonium chloride media showed that higher levels of supplementation gave increased growth of the fungi and prevented the pH from falling. It seems that these acids play a dual role as pH buffers as well as nutritional compounds.


Nitrogen Chloride Ammonium Organic Acid Pathogenic Fungus 
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Copyright information

© Dr. W. Junk N.V. Den Haag 1971

Authors and Affiliations

  • V. P. Sahni
    • 1
  1. 1.Department of BotanyGovernment ScienceJabalpurIndia

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