In this article we will discuss about Gibberellins. After reading this article you will learn about: 1. Biosynthesis of Gibberellins 2. Responses of Plants to Gibberellins 3. Mode of Action 4. Bioassay Methods. Biosynthesis of Gibberellins: Gibberellins are cyclic di-terpenoids or tetraisoprenoids. Biosynthesis of gibberellins follows the basic pathway of isoprenoid biosynthesis. All the carbon atoms of isoprene (C5H8) are [...]
In this article we will discuss about Phytochrome. After reading this article you will learn about: 1. Discovery of Phytochrome 2. Structure and Biosynthesis of Phytochrome 3. Mode of Action. Discovery of Phytochrome: Phytochrome is a blue protein pigment responsible for the perception of light in photo-physiological processes. It is possibly the only photoreceptor in photoperiodism and the flowering process. [...]
The following points highlight the five transformation technologies used for trans-genesis of plants. The technologies are: 1. Agrobacterium 2. Shotgun 3. Microinjection 4. DNA Uptake 5. Antisense RNA. Transformation Technology # 1. Agrobacterium: Agrobacterium tumefaciens a Gram-negative soil bacterium can induce crown galls on the stems of various plants. The phytopathogenic function of the bacterium is encoded in a tumour [...]