, Volume 23, Issue 1, pp 175–179 | Cite as

A slime mould pigment as indicator of acidity

  • William Seifriz
  • Marie Zetzmann


  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.



Plasmodium Flavone Flavin Yellow Pigment Yellow Green 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Verlag von Gebrüder Borntraeger 1935

Authors and Affiliations

  • William Seifriz
  • Marie Zetzmann

There are no affiliations available

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