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expand all sections collapse all sections  Oryza sativa Gene "d2"
ID 14050
Name d2 (GENE SYMBOL)
Synonyms (4)
GRAMENE GENEGR:0060185
Type Gene
Species Oryza sativa (Oryza sativa) [ GR_tax:013681 ]
Germplasm
Description Short, stout stems; short, sinuate but board leaves; erect, compact panicles;
small, round grains. Refer to dwf1. Compared to dwf1, has taller stem and near
normal grains. The pleiotropic abnormal phenotype is similar to that of the rice
brassinosteroid (BR)-insensitive mutant, d61. That dwarf phenotype can be
rescued by exogenous brassinolide treatment. The accumulation profile of BR
intermediates in the d2 (dwf2) mutants confirms that these plants are deficient
in late BR biosynthesis. The results show that the D2 gene encoded a novel
cytochrome P450 classified in CYP90D that is highly similar to the reported BR
synthesis enzymes. Introduction of the wild D2 gene into d2-1 rescued the
abnormal phenotype of the mutants. D2/CYP90D2 catalyzes the steps from 6-
deoxoteasterone to 3-dehydro-6-deoxoteasterone and from teasterone to 3-
dehydroteasterone in the late BR biosynthesis pathway.
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