British scientists have recently cultivated a genetically modified plant that is more resistant to light and heat than ordinary plants. This method helps to cultivate crops that can withstand harsh conditions.
Scientists at the University of Sheffield in the United Kingdom published a paper in the latest issue of Nature magazine. They said that they did not add foreign genes from other species to plants during the cultivation process, but only added genes that they originally had to the plants. .
The plants must have sunlight to grow. If the sunlight is too strong, the plants will overproduce a substance called "active oxygen" that will cause the leaves of the plants to have yellow spots and eventually curl up and die. Usually in photosynthesis, plants use "active oxygen" to make sugars and other substances. If the "reactive oxygen" production exceeds the demand, it will destroy the photosynthesis site - chloroplast in the plant cells.
Plants have evolved a variety of ways to deal with the "reactive oxygen" excess, one of which is the production of lutein to destroy "active oxygen" and safely evacuate excess sunlight. Scientists took advantage of this principle and used the model plant Arabidopsis thaliana as a research object, selecting one of the genes important for the lutein synthesis process, adding a copy of the gene to the plant, and increasing the production of lutein. .
This transgenic Arabidopsis grows for two weeks in an environment where the temperature is 40 degrees Celsius and the light intensity is equivalent to more than half of the noon light intensity in the equatorial region. This is obviously healthier than the normal Arabidopsis grown under the same conditions.
Scientists at the University of Sheffield in the United Kingdom published a paper in the latest issue of Nature magazine. They said that they did not add foreign genes from other species to plants during the cultivation process, but only added genes that they originally had to the plants. .
The plants must have sunlight to grow. If the sunlight is too strong, the plants will overproduce a substance called "active oxygen" that will cause the leaves of the plants to have yellow spots and eventually curl up and die. Usually in photosynthesis, plants use "active oxygen" to make sugars and other substances. If the "reactive oxygen" production exceeds the demand, it will destroy the photosynthesis site - chloroplast in the plant cells.
Plants have evolved a variety of ways to deal with the "reactive oxygen" excess, one of which is the production of lutein to destroy "active oxygen" and safely evacuate excess sunlight. Scientists took advantage of this principle and used the model plant Arabidopsis thaliana as a research object, selecting one of the genes important for the lutein synthesis process, adding a copy of the gene to the plant, and increasing the production of lutein. .
This transgenic Arabidopsis grows for two weeks in an environment where the temperature is 40 degrees Celsius and the light intensity is equivalent to more than half of the noon light intensity in the equatorial region. This is obviously healthier than the normal Arabidopsis grown under the same conditions.
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