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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The effects of irradiation on plant photomorphogenesis in highschool biological education
 Sedlecký, Libor ; Albrechtová, Jana (advisor) ; Pavlová, Libuše (referee)
Light does not serve plants only as a source of energy, but it mediates the information about the environmental conditions and brings signal information for developmental processes taking place in plants. Radiation within the whole spectrum range can be produced by a natural source, or an artificial source. Radiation is percived by a plant due to the whole range of receptors, known as photoreceptors - receptor molecules. Because of photoreceptors plant is able to adapt to its enviromnent and to adjust its metabolism to be as effective as possible. In photomorphogenetic reactions a plant responds mostly to red, blue and partly ultraviolet part of electromagnetic spectrum. For the red radiation there is only one receptor - phytochrome, existing in two various conformations and in several species. Phytochrome is one of the most studied photoreceptors. Blue visible light and partly also ultraviolet radiation is therefore percieved through cryptochromes, which were resistant to research for a long time. In photomorfogenesis there is an enormous difference in plant reactions to light and dark condition. Very different response is observed in various radiation conditions and different physiological events are triggerred and take place. One of the main reactions occurring during change from dark to light...
Detailed record
The effects of irradiation on plant photomorphogenesis in highschool biological education
 Sedlecký, Libor ; Albrechtová, Jana (advisor) ; Pavlová, Libuše (referee)
Light does not serve plants only as a source of energy, but it mediates the information about the environmental conditions and brings signal information for developmental processes taking place in plants. Radiation within the whole spectrum range can be produced by a natural source, or an artificial source. Radiation is percived by a plant due to the whole range of receptors, known as photoreceptors - receptor molecules. Because of photoreceptors plant is able to adapt to its enviromnent and to adjust its metabolism to be as effective as possible. In photomorphogenetic reactions a plant responds mostly to red, blue and partly ultraviolet part of electromagnetic spectrum. For the red radiation there is only one receptor - phytochrome, existing in two various conformations and in several species. Phytochrome is one of the most studied photoreceptors. Blue visible light and partly also ultraviolet radiation is therefore percieved through cryptochromes, which were resistant to research for a long time. In photomorfogenesis there is an enormous difference in plant reactions to light and dark condition. Very different response is observed in various radiation conditions and different physiological events are triggerred and take place. One of the main reactions occurring during change from dark to light...
Detailed record

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