DEMONSTRATION OF THE AXIAL GRADIENTS BY MEANS OF POTASSIUM PERMANGANATE

1 February 1919

journal article
other
Published by University of Chicago Press in The Biological Bulletin

Vol. 36 (2) , 133-147
https://doi.org/10.2307/1536416

Abstract

The axial gradients in many plants and animals can be very clearly and beautifully demonstrated as color gradients by the use of low concentrations of K₂Mn₂O₈, the color being due to the reduction of the permanganate to MnO₂ by protoplasm. Axial gradients have been demonstrated by this method in all axiate organisms thus far examined including several algæ, a diatom pseudothallus, four species of protozoa, various hydroids, hydromedusae and their developmental stages, a siphonophore, actinians, developmental stages of polyclads and echinoderms, axiate appendages of polychetes, and ascidian tadpoles.

Keywords

AXIAL GRADIENTS
PERMANGANATE
DEVELOPMENTAL
COLOR
HYDROMEDUSAE
APPENDAGES
TADPOLES
ASCIDIAN
MNO2

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