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A slime mould pigment as indicator of acidity

Protoplasma volume 23, pages 175–179 (1935)Cite this article

Summary

  1. 1.

    The yellow pigment of the slime-mouldPhysarum polycephalum is an acid-alkaline indicator with a color range from deep red orange to bright yellow green, and a corresponding pH range from 1 to above 8.

  2. 2.

    Within the slime-mould the pigment serves as an acid-alkaline indicator and shows the plasmodium to undergo changes ranging from pH 8 when fruiting to pH 1.6 (possibly 1.2) when a sclerotium is formed.

  3. 3.

    The suggestion is made that the yellow pigment of slime-moulds belongs to the group of respiratory ferments known as flavones, lyochromes, or flavins.

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Authors
  1. William Seifriz
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  2. Marie Zetzmann
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Additional information

Part of this investigation was supported by a grant from the National Research council of Wasington, for which the authors are greatful. They are also thankful to Dr. F. L.Howard for supplyingthe original culture.

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Seifriz, W., Zetzmann, M. A slime mould pigment as indicator of acidity. Protoplasma 23, 175–179 (1935). https://doi.org/10.1007/BF01603385

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  • DOI: https://doi.org/10.1007/BF01603385

Keywords

  • Plasmodium
  • Flavone
  • Flavin
  • Yellow Pigment
  • Yellow Green