In this article we will discuss about the rapid gene regulation by auxin. Naturally occurring hormone indole acetic acid (IAA) is the fastest known hormonal action among plant in terms of rapid cell elongation within a short span of 10-20 minutes. Auxin exhibits two types of response. One is short-term effect with 20 min leads to cell elongation. Second is [...]
In this article we will discuss about:- 1. Meaning of Growth Hormones 2. Mechanism of Action of Growth Hormones 3. Regulation of Secretion 5. Applied Aspects. Meaning of Growth Hormones: Growth hormone (GH) also known as somatotropic hormone and is a peptide hormone secreted by acidophils of the anterior pituitary gland. GH is stored in large, dense granules present in [...]
In this article we will discuss about the transport of growth hormones in plants. Non-Hormonal Factors: Carbon dioxide has been known for a long time to stimulate plant growth. There are at least two CO2 responses which depend on the CO2 concentrations. One is the responses to low concentrations, e.g. 0.03% and the other to much higher concentrations. The characteristics [...]