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Metabolism of polyadenylic acid RNA during seed maturation, ageing and germination in carrot (Daucus carota L.)

Published online by Cambridge University Press:  19 September 2008

S. Thompson ,
J. A. Bryant  and
P. A. Brocklehurst
S. Thompson
Affiliation:
Institute of Horticultural Research, Wellesbourne, Warwick, CV35 9EFUK
J. A. Bryant*
Affiliation:
Department of Biological Sciences, University of Exeter, Exeter EX4 4QG, UK
P. A. Brocklehurst
Affiliation:
Institute of Horticultural Research, Wellesbourne, Warwick, CV35 9EFUK
*
* Correspondence
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Abstract

Polyadenylic acid (poly(A)) content of carrot seeds reached a peak at 40 days after anthesis and then declined as desiccation occurred. A further decline occurred in the early stages of germination and was more extensive in seeds harvested whilst still immature. Accelerated ageing of seed led to significant losses of poly(A) and the content declined still further when aged seeds were set to germinate. In seeds harvested whilst immature and then subjected to ageing, the resumption of net accumulation of poly(A), a feature of normal germination, was barely detectable or did not occur.

Keywords

carrotDaucus carotapolyadenylic acidageinggerminationmaturation
Type
Short Communication
Information
Seed Science Research , Volume 2 , Issue 4 , December 1992 , pp. 255 - 258
Copyright
Copyright © Cambridge University Press 1992

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Footnotes

†

Present address Shell International Ltd, Shell Centre, London SE1 7NA, UK

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