2000 suprasanna et al 2008 if mutated cells survive

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Unformatted text preview: 0; Suprasanna et al., 2008). If mutated cells survive in intrasomatic competition, they can potentially be expressed in plants. Gamma rays have been reported to affect the morphology, anatomy, biochemistry, and physiology of plants, resulting in changes in plant growth and development. The lower regeneration response observed in the present study could be attributed to the toxic effect of gamma radiation (Suprasanna et al., 2008). The ionizing irradiation causes extensive cell nuclear damage and is responsible for the lethality. When a gamma ray is absorbed by biological materials, it will interact with atoms or molecules (particularly water) to produce free radicals in cells, which attack nearby cells. These radicals can modify different important compounds of the plant cell, causing damage to plant cells. This effect of irradiation is critical for vegetative cells, due to the fact that cytoplasm contains around 80% water (Kovacs and Keresztes, 2002). 4.3. Postmutagenesis handling and modification of the culture conditions It should be taken into consideration that many other factors affect plant responses after irradiation. Ther...
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This document was uploaded on 02/23/2014.

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