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Review
. 2007 Jul;144(3):1240-6.
doi: 10.1104/pp.107.100370.

Mechanisms of cross talk between gibberellin and other hormones

David Weiss  1 , Naomi Ori
Affiliations
Review

Mechanisms of cross talk between gibberellin and other hormones

David Weiss et al. Plant Physiol. 2007 Jul.

Erratum in

  • Plant Physiol. 2007 Aug;144(4):2024
No abstract available

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Figures

Figure 1.
Figure 1.
GA interacts positively and negatively with other plant hormones throughout the plant's life cycle. Some of the effects are shown. CK, Cytokinin.
Figure 2.
Figure 2.
Network of interactions between GA and ABA. ABA suppresses GA responses through DELLA-dependent and -independent pathways. Interactions mediated by changes in protein activity or stability are in gray and those mediated by gene expression are in black. Numbers in parentheses indicate the respective reference as follows: 1, Achard et al., 2004; 2, Achard et al., 2006; 3, Gomez-Cadenas et al., 1999; 4, Gomez-Cadenas et al., 2001; 5, Gubler et al., 1995; 6, Reyes and Chua, 2007; 7, Rogers and Rogers, 1992; 8, Xie et al., 2006.
Figure 3.
Figure 3.
Network of interactions between GA and auxin. Auxin promotes GA responses by destabilizing DELLA and by promoting the expression of GA biosynthetic genes. Interactions mediated by changes in protein activity or stability are in gray and those mediated by gene expression are in black. Numbers in parentheses indicate the respective reference as follows: 1, Frigerio et al., 2006; 2, Fu and Harberd, 2003; 3, O'Neill and Ross, 2002; 4, Ross et al., 2000; 5, Wolbang and Ross, 2001.
Figure 4.
Figure 4.
Network of positive and negative interactions between GA and ethylene. Ethylene represses GA biosynthesis or suppresses GA responses via DELLA stabilization. GA promotes ethylene responses in dark- and light-grown seedling (apical hook formation in the dark and hypocotyl elongation in the light). Submergence promotes ethylene and GA synthesis in deepwater rice and R. palustris, and GA promotes ethylene-induced internode elongation. Interactions mediated by changes in protein activity or stability are in gray and those mediated by gene expression are in black. Numbers in parentheses indicate the respective reference as follows: 1, Achard et al., 2003; 2, Achard et al., 2007; 3, Benschop et al., 2006; 4, Sabio et al., 2003; 5, Sauter et al., 1995; 6, Vriezen et al., 2004. EIN3, ETHYLENE INSENSITIVE3; LFY, LEAFY; SOC1, SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1.
Figure 5.
Figure 5.
Network of reciprocal interactions between GA and cytokinin. Two major players control the balance between GA and cytokinin. KNOXI proteins control the balance between the two hormones in the SAM by inducing cytokinin production, directly inhibiting GA synthesis, and indirectly promoting GA deactivation. SPY regulates the balance between the response pathways of these two hormones via suppression of GA signal and promotion of cytokinin responses. Interactions mediated by changes in protein activity or stability are in gray and those mediated by gene expression are in black. Numbers in parentheses indicate the respective reference as follows: 1, Brenner et al., 2005; 2, Chen et al., 2004; 3, Greenboim-Wainberg et al., 2005; 4, Hay et al., 2002; 5, Jasinski et al., 2005; 6, Sakamoto et al., 2001; 7, Silverstone et al., 2007; 8, Yanai et al., 2005. IPT, ISOPENTENYL TRANSFERASE.
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