Cytoplasmic Inheritance

Present in males and females. 

Usually inherited from one parent, typically the maternal parent.

Reciprocal crosses give different results. 

Exhibit extensive phenotypic variation, even within a single family. 

TLS Online TPP Program

#Id: 10178

#Unit 6. System Physiology – Plant

Binding of gibberellin receptor GID1 to DELLA repressor proteins triggers ubiquitination of the latter via the F-box protein SLY1 and subsequent degradation

TLS Online TPP Program

#Id: 10180

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 10181

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 10182

#Unit 6. System Physiology – Plant

GA3-stimulated a-amylase production by GA-MYB for starch mobilisation in seeds

TLS Online TPP Program

#Id: 10183

#Unit 6. System Physiology – Plant

Brassinosteroids are also required for promotion of cell

elongation by gibberellins, and gibberellin-induced degradation of the DELLA repressor enhances the brassinosteroid response

TLS Online TPP Program

#Id: 10184

#Unit 6. System Physiology – Plant

Gibberellin appears to promote flowering in Arabidopsis by activating expression of the LEAFY gene.

The activation of LFY by gibberellin is mediated by the

transcription factor GA-MYB