Postembryonic seedling lethality in the sterol-deficient Arabidopsis cyp51A2 mutant is partially mediated by the composite action of ethylene and reactive oxygen species.

Abstract excerpt

Seedling-lethal phenotypes of Arabidopsis (Arabidopsis thaliana) mutants that are defective in early steps in the sterol biosynthetic pathway are not rescued by the exogenous application of brassinosteroids. The detailed molecular and physiological mechanisms of seedling lethality have yet to be understood. Thus, to elucidate the underlying mechanism of lethality, we analyzed transcriptome and proteome profiles...

Topics

• Arabidopsis
• Arabidopsis Proteins
• Ethylenes
• Gene Expression Profiling
• Gene Expression Regulation, Plant
• Mutation
• Reactive Oxygen Species
• Seedlings
• Signal Transduction
• Sterols