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Science 17 April 1998:
Vol. 280. no. 5362, pp. 446 - 450
DOI: 10.1126/science.280.5362.446
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Reports

Maternal Control of Embryogenesis by MEDEA, a Polycomb Group Gene in Arabidopsis

Ueli Grossniklaus, * Jean-Philippe Vielle-Calzada, Marilu A. Hoeppner, Wendy B. Gagliano dagger

The gametophytic maternal effect mutant medea (mea) shows aberrant growth regulation during embryogenesis in Arabidopsis thaliana. Embryos derived from mea eggs grow excessively and die during seed desiccation. Embryo lethality is independent of the paternal contribution and gene dosage. The mea phenotype is consistent with the parental conflict theory for the evolution of parent-of-origin-specific effects. MEA encodes a SET domain protein similar to Enhancer of zeste, a member of the Polycomb group. In animals, Polycomb group proteins ensure the stable inheritance of expression patterns through cell division and regulate the control of cell proliferation.

Cold Spring Harbor Laboratory, 1 Bungtown Road, Post Office Box 100, Cold Spring Harbor, NY 11724, USA.
*   To whom correspondence should be addressed. E-mail: grossnik{at}cshl.org

dagger    Present address: Graduate Program in Natural Resources, Ohio State University, Columbus, OH 43210-1085, USA.

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   Abstract »    Full Text »    PDF »
Duplicated fie Genes in Maize: Expression Pattern and Imprinting Suggest Distinct Functions.
O. N. Danilevskaya, P. Hermon, S. Hantke, M. G. Muszynski, K. Kollipara, and E. V. Ananiev (2003)
PLANT CELL 15, 425-438
   Abstract »    Full Text »    PDF »
Isolation of GUS marker lines for genes expressed in Arabidopsis endosperm, embryo and maternal tissues.
B. Stangeland, Z. Salehian, R. Aalen, A. Mandal, and O.-A. Olsen (2003)
J. Exp. Bot. 54, 279-290
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Embryo and Endosperm Development Is Disrupted in the Female Gametophytic capulet Mutants of Arabidopsis.
P. E. Grini, G. Jurgens, and M. Hulskamp (2002)
Genetics 162, 1911-1925
   Abstract »    Full Text »    PDF »
Demeter: On Seeds and Goddesses.
A. Lohe and A. Chaudhury (2002)
PLANT CELL 14, 2981-2983
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Chromatin-Remodeling and Memory Factors. New Regulators of Plant Development.
J. C. Reyes, L. Hennig, and W. Gruissem (2002)
Plant Physiology 130, 1090-1101
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