Abstract:
:Ovule development in Arabidopsis involves the formation of three morphologically defined proximal-distal pattern elements. Integuments arise from the central pattern element. Analysis of Bell 1 (Bel 1) mutant ovules indicated that BEL1 was required for integument development. Cloning of the BEL1 locus reveals that it encodes a homeodomain transcription factor. Prior to integument initiation, BEL1 RNA localizes to the central domain, providing molecular evidence for a central pattern element. Therefore, proximal-distal patterning of the ovule involves the regulated expression of the BEL1 gene that controls integument morphogenesis. A model for BEL1 function is evaluated with regard to new data showing the expression pattern of the floral homeotic gene AGAMOUS (AG) early in wild-type and BEL1 ovule development.
journal_name
Celljournal_title
Cellauthors
Reiser L,Modrusan Z,Margossian L,Samach A,Ohad N,Haughn GW,Fischer RLdoi
10.1016/0092-8674(95)90186-8subject
Has Abstractpub_date
1995-12-01 00:00:00pages
735-42issue
5eissn
0092-8674issn
1097-4172pii
0092-8674(95)90186-8journal_volume
83pub_type
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