Gibberellin biosynthetic deficiency is responsible for maize dominant Dwarf11 (D11) mutant phenotype: physiological and transcriptomic evidence.

ABSTRACT: Dwarf stature is introduced to improve lodging resistance and harvest index in crop production. In many crops including maize, mining and application of novel dwarf genes are urgent to overcome genetic bottleneck and vulnerability during breeding improvement. Here we report the characterization and expression profiling analysis of a newly identified maize dwarf mutant Dwarf11 (D11). The D11 displays severely developmental abnormalities and is controlled by a dominant Mendelian factor. The D11 seedlings responds to both GA3 and paclobutrazol (PAC) application, suggesting that dwarf phenotype of D11 is caused by GA biosynthesis instead of GA signaling deficiency. In contrast, two well-characterized maize dominant dwarf plants D8 and D9 are all insensitive to exogenous GA3 stimulation. Additi

SUBMITTER: Wang Y 

PROVIDER: S-EPMC3680376 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature