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Increase of the content of QP47 (a desiccation-associated nuclear protein) in embryo cells during maturation of pea seeds

Published online by Cambridge University Press:  19 September 2008

Donato Chiatante*
Affiliation:
Dipartimento di Scienze Animali, Vegetali e dell'Ambiente, Università degli Studi del Molise, via Cavour 50, Campobasso, Italy
Paola Brusa
Affiliation:
Dipartimento di Biologia, Sezione di Botanica Generale, Università degli Studi di Milano, via Celoria 26, Milano, Italy
*
*Correspondence

Abstract

A nuclear protein (QP47) is synthesized during the last stage of seed maturation when the embryo cells start to dehydrate and enter a condition of metabolic quiescence. This protein is localized in the nucleoplasm surrounding the chromosomes. The correlation existing between the synthesis of QP47 and arrest of cell proliferation, suggests that the presence of this protein in the nucleus could influence its metabolic activities. This hypothesis is supported by the fact that degradation of this protein precedes resumption of cell proliferation during the early stage of radicle elongation.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1994

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