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Fig. S1 Pigment contents and electron microscopy of rice (Oryza sativa) wild-type and csdd1 leaves.

Fig. S2 De-etiolated phenotypes of csdd1 rice (Oryza sativa) plants.

Fig. S3 Expression analysis of BR-regulated genes in csdd1 rice (Oryza sativa) plants by real-time PCR.

Fig. S4 Expression analysis of predicted genes in the deleted chromosome segment of csdd1 by RT-PCR.

Fig. S5 Complementation test or expression analysis of other candidate genes.

Fig. S6 Internode elongation patterns of D2-RNAi plants.

Fig. S7 Morphologies of d2-1 and d2-2 rice (Oryza sativa) mutants.

Fig. S8 Severe dwarf phenotypes of csdd1 allele in T65 genetic background.

Fig. S9 Identification of T-DNA insertion sites and co-segregation between the T-DNA insert and dwarf phenotype.

Fig. S10 Microstructure of internodes from d2-3 and d2-4 rice (Oryza sativa) plants.

Fig. S11 De-etiolated phenotypes of d2-3 and d2-4 rice (Oryza sativa) mutants.

Fig. S12 Internode elongation patterns and internode morphology of d2-1-RNAi rice (Oryza sativa) plants.

Fig. S13 Rescue of d2-3 phenotype by expression of D2a.

Fig. S14 Endogenous BR Levels and enzyme assay for CYP90D2.

Table S1 PCR-based InDel molecular makers developed for fine mapping of the csdd1 locus in rice (Oryza sativa)

Table S2 Primers used for vector construction

Table S3 Primers used for RT-RCR analysis

Table S4 Primers used for real-time PCR analysis

Table S5 Traits of csdd1, D2 rice (Oryza sativa) mutants and their wild-types

Table S6 Primers used for identification of the deleted site in csdd1 rice (Oryza sativa) mutant

Table S7 Predicted genes/ORFs in the deleted chromosome segment of csdd1 rice (Oryza sativa) mutant

Methods S1 De-etiolated phenotype analysis.

Methods S2 Vector construction and rice transformation.