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Retinoblastoma makes its mark on imprinting in plants

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Costa, Liliana M. and Gutierrez-Marcos, José F. (2008) Retinoblastoma makes its mark on imprinting in plants. Plos Biology, Vol.6 (No.8). pp. 1631-1633. ISSN 1544-9173

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Official URL: http://dx.doi.org/10.1371/journal.pbio.0060212

Abstract

Genomic imprinting results in the preferential expression of alleles from either the maternal or paternal chromosomes. This epigenetic process occurs in embryonic and extra-embryonic (placental) tissues of mammals, but only in the extra-embryonic tissue (the endosperm) of flowering plant seeds. It is thought that imprinting arose to ensure that both maternal and paternal genomes contribute to the development of the offspring [1]. Indeed, the predominant occurrence of imprinting in extraembryonic structures might indicate a similar reproductive strategy in both taxa to correctly regulate embryo growth and development. Because extra-embryonic lineages do not contribute any genetic information to the offspring, it is likely that epigenetic mechanisms responsible for imprinting could evolve rapidly [2,3], without causing deleterious consequences to the offspring.

Item Type:	Journal Item
Subjects:	Q Science > QK Botany
Divisions:	Faculty of Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH):	Retinoblastoma, Genomic imprinting, Plant genetics
Journal or Publication Title:	Plos Biology
Publisher:	Public Library of Science
ISSN:	1544-9173
Date:	August 2008
Volume:	Vol.6
Number:	No.8
Number of Pages:	3
Page Range:	pp. 1631-1633
Identification Number:	10.1371/journal.pbio.0060212
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
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URI:	http://wrap.warwick.ac.uk/id/eprint/29461