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Mobilisation of storage reserves during fern spore germination

Published online by Cambridge University Press:  05 December 2011

A. E. DeMaggio  and
D. A. Stetler
A. E. DeMaggio
Affiliation:
Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, U.S.A.
D. A. Stetler
Affiliation:
Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, U.S.A.
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Synopsis

We have studied morphological and biochemical aspects of storage reserves and their degradation in fern spores during the germination process. The results presented here are concerned with the fate of lipid, protein and phytic acid. Depletion of lipid reserves and breakdown of lipid bodies was directly correlated with increased activity of glyoxylate cycle enzymes during early stages of germination. Degradation of protein reserves coincided with the depletion of salt soluble proteins (globulins) from the spores and was related to the time when high activity of aminopeptidase and carboxypeptidase was observed. Lipid and protein appeared to play an important role in germination. Phytic acid reserves were present in the spore and were hydrolysed by phytase after germination occurred. This storage material was implicated in growth of the prothallus.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 86: The Biology of Pteridophytes , 1985 , pp. 195 - 202
Copyright
Copyright © Royal Society of Edinburgh 1985

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