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Behavior of the Inner Wall Layer of the Germinating Fuligo septica Spore: Evidence of Peroxidase Activity

Henry Stempen and Robert C. Evans
Mycologia
Vol. 74, No. 1 (Jan. - Feb., 1982), pp. 26-35
DOI: 10.2307/3792625
Stable URL: http://www.jstor.org/stable/3792625
Page Count: 10
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Behavior of the Inner Wall Layer of the Germinating Fuligo septica Spore: Evidence of Peroxidase Activity
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Abstract

The spore wall of Fuligo septica is composed of an exterior electron-dense, spined layer and an interior more electron-transparent, fibrous layer. The fibrous material in the interior layer is often tightly packed. During germination, the exterior layer splits, but the inner layer does not. A remnant of this inner layer surrounds the newly released protoplast if the remnant is not left behind. The remnant appears to be derived from the fibrous wall material. However, swarm cells appear to be free of structural wall components. Cytochemical tests suggest peroxidase activity in the inner wall layer. Initial localization of peroxidase activity near the split in the outer wall may indicate peroxidase plays a role in the germination process.

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