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Cellular aspects of the initiation of aposporous outgrowths in ferns

Published online by Cambridge University Press:  05 December 2011

E. Sheffield
E. Sheffield
Affiliation:
Cryptogamic Botany Laboratories, Department of Botany, The University of Manchester, Manchester M13 9PL, U.K.
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Synopsis

Low temperature SEM of juvenile leaves of Pteridium aquilinum (L.) Kuhn revealed that outgrowths arise from leaf cells as soon as three days after their detachment from the plant. Such outgrowths matured into fully functional gametophytes, so it can be said that the phase change from sporophyte to gametophyte occurred during the three day interval between detachment and outgrowth protrusion. Measurement of the incorporation of tritiated uridine into leaves detached for 0–5 days indicated that RNA levels rise during the first two days of culture and subsequently decline. The significance of this finding is discussed in relation to theories concerning changes in phase, in particular the suggestion that RNA connected with sporophytic growth must be expunged and that concerned with gametophytic growth synthesised during phase change.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 86: The Biology of Pteridophytes , 1985 , pp. 45 - 50
Copyright
Copyright © Royal Society of Edinburgh 1985

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References

Bell, P. R. 1981. The phase change in ferns. Acta. Soc. Bot. Pol. 50, 307–314.CrossRefGoogle Scholar
Dickinson, H. G. 1981. Cytoplasmic differentiation during microsporogenesis in higher plants. Acta. Soc. Bot. Pol. 50, 3–12.CrossRefGoogle Scholar
Dickinson, H. G. 1982. The development of pollen. Rev. Cytol. Biol. Végét.-Bot. 5, 5–19.Google Scholar
Dickinson, H. G. and Heslop-Harrison, J. 1977. Ribosomes, membranes and organelles during meiosis in angiosperms. Phil. Trans. Roy. Soc. 277B, 327–342.Google Scholar
Dyer, A. F. 1979. The experimental biology of ferns. Trans. Bot. Soc. Edinb. 43, 75–90.CrossRefGoogle Scholar
Miller, C. C. J., Duckett, J. G. and Kirkham, B. 1985. Gametogenesis: the playground of the developmental cytologist. Proc. Roy. Soc. Edinb. 86B, 29–35.Google Scholar
Moore, G. T. 1903. Methods of growing pure cultures of algae. J. Appl. Microsc. 6, 2309–2314.Google Scholar
Sheffield, E. 1978. The establishment of the gametophytic phase in the life cycle of a fern. Ph.D. thesis, University of London.Google Scholar
Sheffield, E. 1984. Apospory in the fern. Pteridium aquilinum (L.) Kuhn. 1. Low temperature scanning electron microscopy. Cytobios 39, 171–176.Google Scholar
Sheffield, E. and Bell, P. R. 1979. Ultrastructural aspects of sporogenesis in a fern, Pteridium aquilinum (L.) Kuhn. Ann. Bot. 44, 393–405.CrossRefGoogle Scholar
Sheffield, E. and Bell, P. R. 1981. Experimental studies of apospory in ferns. Ann. Bot. 47, 187–195.CrossRefGoogle Scholar
Sheffield, E. Cutter, E. G. and Charlton, W. A. 1985. Cryo SEM of reproduction in pteridophytes. Proc. Roy. Soc. Edinb. 86B, 458–459.Google Scholar
Sheffield, E. Laird, S. and Bell, P. R. 1983. Ultrastructural aspects of sporogenesis in the apogamous fern Dryopteris borreri. J. Cell Sci. 63, 125–134.CrossRefGoogle ScholarPubMed
Siersma, P. W. and Chiang, K. S. 1971. Conservation and degradation of cytoplasmic and chloroplast ribosomes in Chlamydomonas reinhardtii. J. Molec. Biol. 58, 167–185.CrossRefGoogle ScholarPubMed
Takahashi, C. 1962. Cytological study on induced apospory in ferns. Cytologia 27, 79–96.CrossRefGoogle Scholar
Walker, T. G. 1985. Some aspects of agamospermy in ferns—the Braithwaite system. Proc. Roy. Soc. Edinb. 86B, 59–66.Google Scholar