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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
Vol. 74, No. 1 (Jan. - Feb., 1982), pp. 26-35
Published by: Mycological Society of America
Stable URL: http://www.jstor.org/stable/3792625
Page Count: 10
You can always find the topics here!Topics: Spores, Spore germination, Fungal spores, Reaction products, Germination, Protoplasts, Water distillation, Cell membranes, Electron micrographs, Chemical suspensions
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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.
Mycologia © 1982 Mycological Society of America