The molecular and genetic basis of ovule and megagametophyte development

Grossniklaus, U., Schneitz, K. (April 1998) The molecular and genetic basis of ovule and megagametophyte development. Seminars in Cell and Developmental Biology, 9 (2). pp. 227-38. ISSN 1084-9521 (Print)

DOI: 10.1006/scdb.1997.0214


The formation of ovules is a key step in the plant life cycle which alternates between a diploid and haploid generation, the sporophyte and the gametophyte. The transitions between the two generations in the female occur in the ovule, the site of meiosis, female gametogenesis and double fertilization. The intimate association of sporophytic and gametophytic tissues in the ovule allows an investigation of their cellular interactions during ovule and seed development. In Arabidopsis, several sporophytically acting loci which primarily affect the morphogenesis of the integuments have been identified. Early acting genes may respond to positional information leading to a region-specific initiation of morphogenesis, whereas later acting genes affect cellular aspects of integument growth. Much less is known about the mechanisms controlling the development of the megagametophyte. Comparative morphology and genetic analyses suggests that regulatory mechanisms ensure a tight coordination of independently controlled cellular processes with cell specification and differentiation.

Item Type: Paper
Uncontrolled Keywords: Plant Components/ growth & development Plants/ growth & development Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S.
Subjects: organism description > plant > Arabidopsis
bioinformatics > genomics and proteomics > genetics & nucleic acid processing
organs, tissues, organelles, cell types and functions > organelles, types and functions > meiosis
CSHL Authors:
Communities: CSHL labs > Grossniklaus lab
Depositing User: Kathleen Darby
Date: April 1998
Date Deposited: 05 May 2014 13:11
Last Modified: 05 May 2014 13:11
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