The role of DORNROESCHEN (DRN) and DRN-LIKE (DRNL) in Arabidopsis embryonic patterning.
Appropriate embryonic patterning is amongst the most fundamental processes in plant development, necessary for the correct specification of root and shoot apical meristems which generate all post-germination organs of a plant. Many mutations have been characterized which disrupt embryonic pattern formation and many recent studies have focussed on the role of auxin in establishing apical-basal polarity. Our recent work has demonstrated the role of two redundant AP2 transcription factors, DORNROESCHEN (DRN) and DORNROESCHEN-LIKE (DRNL) in the control of embryo patterning, upstream of auxin perception and/or response and that DRN in turn, is regulated by auxin. We also suggest both genes are involved in the change from radial to bilateral symmetry in the globular embryo and are responsible for positional information of meristem-specific genes such as STM. The promiscuous interaction of DRN and DRNL proteins with the redundant family of class III HD-ZIP partners may represent a way by which embryonic cell specification can be controlled by combinations of transcription factor complexes, together with auxin.
Chandler
John W
JW
Department of Developmental Biology; University of Cologne; Cologne, Germany.
Cole
Melanie
M
Werr
Wolfgang
W
Development. 2004 Oct;131(20):5021-30
15371311
Nature. 2003 Nov 20;426(6964):255-60
14628043
Genes Dev. 2002 Jul 1;16(13):1610-5
12101120
Development. 2005 Sep;132(18):4063-74
16107478
Cell. 2003 Nov 26;115(5):591-602
14651850
Gene Expr Patterns. 2007 Jan;7(1-2):158-64
16880009
Development. 2001 Oct;128(20):4057-67
11641228
EMBO J. 1998 Mar 2;17(5):1405-11
9482737
Plant Cell. 2003 Jul;15(7):1563-77
12837947
Nature. 2003 Nov 13;426(6963):147-53
14614497
Development. 2007 May;134(9):1653-62
17376809
Plant Cell. 2003 Mar;15(3):694-705
12615942
Plant Cell. 2005 Jan;17(1):61-76
15598805
Plant Mol Biol. 2006 Dec;62(6):825-43
17096212
Dev Cell. 2006 Feb;10(2):265-70
16459305
Plant Cell. 2006 Nov;18(11):2946-57
17122068
Plant Cell. 2007 Feb;19(2):495-508
17307928
Plant Cell Physiol. 2006 Nov;47(11):1443-56
17056621
Proc Natl Acad Sci U S A. 1999 May 11;96(10):5844-9
10318972
Plant Mol Biol. 2007 Oct;65(3):219-32
17682829
Plant Cell. 2006 Jan;18(1):29-39
16339853
Plant Cell. 1997 Jun;9(6):841-57
9212461