Let us make an in-depth study of the mechanism of gibberellin action in higher plants. After reading this article you will learn about A. Promotion of Stem Elongation and B. Mobilization of Endosperm Food Reserves. Gibberellins (GAs) are very active molecules even at very low concentrations. Responses of gibberellins in stem elongation of lettuce/rice seedlings at concs. of 10-10 g [...]
The following points highlight the four molecular mechanisms of auxin action in plants. The molecular mechanisms are: 1. An Auxin-binding Receptor has been Discovered 2. Auxin Causes Rapid Changes in Gene Activity 3. Some Signalling Intermediates (Secondary Messengers) have been Implicated in Auxin Action and 4. There are Two Categories of Auxin-Induced Genes-Early Genes and Late Genes. Molecular Mechanism # [...]
Let us make an in-depth study of the gibberellins. After reading this article you will learn about 1. Discovery and Chemical Nature of Gibberellins 2. Distribution of Gibberellins in Plant 3. Biosynthesis of Gibberellins in Plants 4. Gibberellins Transport in Plant and 5. Deactivation of Gibberellins. Discovery and Chemical Nature of Gibberellins: The discovery of gibberellins is quite fascinating and [...]