Abstract
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 post-translational control of ethylene-GA crosstalk.Addendum to: De Grauwe L, Chaerle L, Dugardeyn J, Decat J, Rieu I, Vriezen WH, Baghour M, Moritz T, Beemster GT, Phillips AL, Harberd NP, Hedden P, Van Der Straeten D. Reduced gibberellin response affects ethylene biosynthesis and responsiveness in the Arabidopsis gai eto2-1 double mutant. New Phytologist 2008; 177:128-41.
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