QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

First published online October 26, 2007
doi: 10.1242/10.1242/dev.007310

This Article Figures Only Full Text Full Text (PDF) Supplementary Material Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Ngo, Q. A. Articles by Sundaresan, V. Search for Related Content PubMed PubMed Citation Articles by Ngo, Q. A. Articles by Sundaresan, V. Social Bookmarking                         What's this?

Arabidopsis GLAUCE promotes fertilization-independent endosperm development and expression of paternally inherited alleles

¹ Section of Plant Biology, University of California, One Shields Avenue, Davis, CA 95616, USA.
² Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.
³ Institute of Plant Biology and Zürich-Basel Plant Science Center, University of Zürich, Zollikerstrasse 107, CH-8008 Zürich, Switzerland.
⁴ Department of Plant Sciences, University of California, One Shields Avenue, Davis, CA 95616, USA.

^* Author for correspondence (e-mail: sundar{at}ucdavis.edu)

Accepted 27 August 2007

Early seed development of sexually reproducing plants requires both maternal and paternal genomes but is prominently maternally influenced. A novel gametophytic maternal-effect mutant defective in early embryo and endosperm development, glauce (glc), has been isolated from a population of Arabidopsis Ds transposon insertion lines. The glc mutation results from a deletion at the Ds insertion site, and the molecular identity of GLC is not known. glc embryos can develop up to the globular stage in the absence of endosperm and glc central cells appear to be unfertilized. glc suppresses autonomous endosperm development observed in the fertilization-independent seed (fis) class mutants. glc is also epistatic to mea, one of the fis class mutants, in fertilized seeds, and is essential for the biparental embryonic expression of PHE1, a repressed downstream target of MEA. In addition, maternal GLC function is required for the paternal embryonic expression of the ribosome protein gene RPS5a and the AMP deaminase gene FAC1, both of which are essential for early embryo and endosperm development. These results indicate that factors derived from the female gametophyte activate a subset of the paternal genome of fertilized seeds.

Key words: Embryogenesis, Autonomous endosperm, Maternal effect, Paternal allele activation, Fertilization, Plant reproduction, Seed development

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				A. Ungru, M. K. Nowack, M. Reymond, R. Shirzadi, M. Kumar, S. Biewers, P. E. Grini, and A. Schnittger Natural Variation in the Degree of Autonomous Endosperm Formation Reveals Independence and Constraints of Embryo Growth During Seed Development in Arabidopsis thaliana Genetics, June 1, 2008; 179(2): 829 - 841. [Abstract] [Full Text] [PDF]