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Fig. 2. Phenotypes associated with the auxin and gibberellin receptor
mutants. All images are shown alongside wild type for comparison.
(A) A wild-type Arabidopsis plant (left) and a quadruple auxin
receptor mutant, tir1 afb1 afb2 afb3, which has reduced apical
dominance and size (right). (B). Cell division of the hypophysis
(arrows), which is necessary for root meristem specification, is strongly
delayed in tir1 afb2 afb3 globular embryos (right). (C) Growth
of the rice gibberellin receptor mutant gid1-1 (right) is severely
reduced. Inset: higher magnification of gid1-1. Scale bars, 10 cm (1
cm in inset). [A and B are reprinted, with permission, from Dharmasiri et al.
(Dharmasiri et al., 2005b). C
is reprinted, with permission, from Ueguchi-Tanaka et al.
(Ueguchi-Tanaka et al.,
2005).]
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