In plants, there is a photo reversible pigment which is called phytochrome (P), chromophoric protein, and exists in two forms: one which absorbs red (Pr) and the other one which absorbs far-red light (Pfr). Bestowed with such a versatility of the molecule, several bio-chemicals, physiological and morphogenetic responses can be regulated in the plants. It […]
Notes on Phytochrome | Plant Physiology
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Primary and Secondary Reactions of Photosynthesis
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In this article we will discuss about the primary and secondary reactions of photosynthesis. Ruben and his co-workers in early 1943 used 18O and proved that oxygen evolved in photosynthesis came from water. Photosynthesis allowed to proceed in H2O18 and normal CO2, had molecular oxygen evolved with heavy isotopes. When photosynthesis was carried out in […]
Commonly Used Methods of Measuring Photosynthesis
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Several experiments can be performed to demonstrate the process of photosynthesis. Usually, the process is demonstrated by the liberation of O2 which is a by-product from a green illuminated water plant. A bunch of Hydrilla plants cut under water are placed under a glass funnel dipping in water with their cut ends directed towards the […]
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