Maternal Control of Embryogenesis by MEDEA , a Polycomb Group Gene in Arabidopsis-Reference-Cited by-同舟云学术

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

Published:1998-04-17 Issue:5362 Volume:280 Page:446-450
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Grossniklaus Ueli¹,Vielle-Calzada Jean-Philippe¹,Hoeppner Marilu A.¹,Gagliano Wendy B.¹

Affiliation:

1. Cold Spring Harbor Laboratory, 1 Bungtown Road, Post Office Box 100, Cold Spring Harbor, NY 11724, USA.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference36 articles.

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5. For whole-mount specimens siliques were fixed in 3:1 ethanol:acetic acid for 2 hours and cleared in Hoyer's medium (24). For sectioning siliques were fixed in 3% glutaraldehyde for 2 hours rinsed in 50 mM cacodylate buffer and postfixed in 2% OsO 4 . After serial dehydration in ethanol specimens were embedded in Spurr's media (25). Seeds were observed using bright-field and differential interference contrast optics.

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