Genetic integration of DORNRÖSCHEN and DORNRÖSCHEN-LIKE reveals hierarchical interactions in auxin signalling and patterning of the Arabidopsis apical embryo

Genetic integration of DORNRÖSCHEN and DORNRÖSCHEN-LIKE reveals hierarchical interactions in... DORNRÖSCHEN (DRN) and DORNRÖSCHEN-LIKE (DRNL) encode AP2-domain transcription factors, which act redundantly in cotyledon organogenesis. A more detailed genetic study now integrates DRN and DRNL into the CUP-SHAPED COTYLEDON (CUC) regulatory network and places DRN and DRNL differentially within the auxin signalling network: DRNL function overlaps with that of PIN-FORMED1, and DRN with PINOID. DRN and DRNL act cell-autonomously and are co-expressed in the early globular embryo, whereas expression patterns diverge during later stages of embryogeny. Both genes synergize to provide essential patterning information in the apical embryo domain, to establish correct CUC, SHOOTMERISTEMLESS and WUSCHEL expression domains, which relates to the patterning of SAM anlagen to a central apical position to create two planes of bilateral symmetry in wild type Arabidopsis thaliana embryos. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Genetic integration of DORNRÖSCHEN and DORNRÖSCHEN-LIKE reveals hierarchical interactions in auxin signalling and patterning of the Arabidopsis apical embryo

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Publisher
Springer Netherlands
Copyright
Copyright © 2010 by Springer Science+Business Media B.V.
Subject
Life Sciences; Plant Pathology; Biochemistry, general; Plant Sciences
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-010-9721-5
Publisher site
See Article on Publisher Site

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