Novel mechanisms of ethylene-gibberellin crosstalk revealed by the gai eto2-1 double mutant.
DELLA proteins have been shown to act as integrators of the signaling network controlling plant growth. In the January issue of New Phytologist (2008), we analyzed the gai eto2-1 double mutant and corresponding single mutants, with defects in the ethylene-biosynthesis and/or in the gibberellin (GA)-signaling cascade. This research revealed yet unknown modes of cross-talk between the ethylene and GA pathways. Two hypotheses have been put forward. Both essentially suggest the existence of reciprocal posttranslational control of ethylene-GA crosstalk.
De Grauwe
Liesbeth
L
Unit Plant Hormone Signaling and Bio-Imaging; Department of Molecular Genetics; Ghent University; Gent Belgium.
Dugardeyn
Jasper
J
Van Der Straeten
Dominique
D
Planta. 2007 Jul;226(2):485-98
17351788
Genes Dev. 1997 Dec 1;11(23):3194-205
9389651
Plant Cell. 2002 Dec;14(12):3191-200
12468736
J Exp Bot. 2008;59(1):1-16
18212030
Trends Plant Sci. 2005 Jun;10(6):291-6
15949763
Plant Cell. 1998 Feb;10(2):155-69
9490740
Plant J. 2005 Jul;43(1):153-63
15960624
Genetics. 2001 Oct;159(2):777-85
11606552
Mol Cell. 1998 Nov;2(5):571-80
9844630
Vitam Horm. 2005;72:399-430
16492477
Proc Natl Acad Sci U S A. 2007 Apr 10;104(15):6484-9
17389366
J Exp Bot. 2007;58(15-16):4269-81
18182430
Plant J. 2004 Feb;37(4):505-16
14756759
Proc Natl Acad Sci U S A. 1998 Apr 14;95(8):4766-71
9539813
J Biol Chem. 2003 Dec 5;278(49):49102-12
12968022
Plant Cell. 2003 Dec;15(12):2816-25
14615596
New Phytol. 2008;177(1):128-141
18078472
Plant Physiol. 2006 Oct;142(2):509-25
16920880
Plant Physiol. 2004 Sep;136(1):2621-32
15375207