disscus the effect of environment on gene expression citing any five examples
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Temperature and Gene Expression: The study on the coat color of the Himalayan rabbit with relation to the temperature reveals the effect of temperature. The rabbit with normal phenotype of white fur showed differences in the skin color with exposure to temperature. The body of the rabbit which is generally exposed to high temperature (>34 degrees) expressed white color whereas the other parts like ears, nose , tail and paws which are little exposed to temperature expressed black color. Keeping the rabbit under cold climate resulted in the expression of fully black colored skin. This study proves the sensitivity of the genes responsible for the skin color to the temperature.
Another study on wing development in Drosophila flies with response to the temperature also provided results with the effect of temperature. Flies exposed to the temperature of 25 degree Celsius showed less penetrance whereas when exposed to higher temperature penetrance also increased which was observed by the increase in the development of wings in the selected population of flies.
The research by the scientist Voolstra CR and his team from KAUST, Saudi Arabia on studying the gene expression by exposing the embryos of Coral Montastraea faveolata to different temperatures like 27.5, 29 and 31.5 degree C resulted in the continuous expression of stress related genes in the embryos that were exposed to 31.5 degree C. Also the effect of temperature on genes encoding the enzyme for the biosynthesis of starch in the wheat plant Triticum aestivum was studied by William J Hurkman and his co-workers from USDA, USA. The effect of temperature on these genes was observed by analyzing the starch accumulation.
Also the research on the effect of temperature reduction on gene expression and oxidative stress in skeletal muscle from adult Zebra fish by Ranae L and team and the study of sea water acidification and elevated temperature’s effect on gene expression pattern of the Pearl Oyster Pinctada fucata by Wenguang Liu and team, China shows the role of temperature, an external environmental factor on gene expression.
Another study on wing development in Drosophila flies with response to the temperature also provided results with the effect of temperature. Flies exposed to the temperature of 25 degree Celsius showed less penetrance whereas when exposed to higher temperature penetrance also increased which was observed by the increase in the development of wings in the selected population of flies.
The research by the scientist Voolstra CR and his team from KAUST, Saudi Arabia on studying the gene expression by exposing the embryos of Coral Montastraea faveolata to different temperatures like 27.5, 29 and 31.5 degree C resulted in the continuous expression of stress related genes in the embryos that were exposed to 31.5 degree C. Also the effect of temperature on genes encoding the enzyme for the biosynthesis of starch in the wheat plant Triticum aestivum was studied by William J Hurkman and his co-workers from USDA, USA. The effect of temperature on these genes was observed by analyzing the starch accumulation.
Also the research on the effect of temperature reduction on gene expression and oxidative stress in skeletal muscle from adult Zebra fish by Ranae L and team and the study of sea water acidification and elevated temperature’s effect on gene expression pattern of the Pearl Oyster Pinctada fucata by Wenguang Liu and team, China shows the role of temperature, an external environmental factor on gene expression.
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