Summary
Phytophthora phaseoli Thaxter is unable to grow on a medium containing mineral salts, dextrose and inorganic nitrogen but requires for its growth a special amino acid (d-alanine) supplemented with thiamin. Other substances found to be suitable as nitrogen sources are peptone, hydrolysed peptone, casein, buttermilk, lentil extract, yeast extract and lima bean infusion, all of which, excepting casein, also supply the necessary growth substance. The fungus suffers from thiamin deficiency. Ammonium ion is found to be toxic for the growth of the fungus.
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Communicated by Prof. Shri Ranjan,d.sc, f.a.sc.
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Saksena, R.K., Bhargava, K.S. Nitrogen requirements and vitamin deficiencies ofPhytophthora phaseoli thaxter. Proc. Indian Acad. Sci. 18, 45–51 (1943). https://doi.org/10.1007/BF03049871
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DOI: https://doi.org/10.1007/BF03049871