Wednesday, May 7, 2014

Light-sensitive "eyes" in plants

Scientists have always known that plants lean towards the sun for more sunlight, but now we know more about how plants do this. There is a family of proteins involved in this called "phytochromes". These proteins are found in plant leaves. They detect light and allow the plant to determine whether its light or day. These are sort of like the plants "eyes".



The phytochromes in the plants are changed in shape when they are exposed to light. This allows signals to be passed on towards cells. Scientists have recently found out that the phytochromes don't just change shape; they are almost completely rebuilt. Now that we have this understanding of how plants growing towards the sun works, we could use this to to have more efficient crops in places with little light.

NOS Themes:
- Science is based on evidence - the scientists involved in this used bacteria to test this.
- Role of Credibility - The scientists were all with the University of Gothenburg

Link: http://www.sciencedaily.com/releases/2014/05/140505104225.htm


2 comments:

  1. The article was very interesting. There seem to be many implementations for phytochromes. Your article also said that we can use new data and knowledge of phytochromes to make a new measurement method with structural change. I found a site that stated more about how phytochromes work. It seems that they can detect the ratio of the color of light to detect what the light source is.

    Site: http://www.mobot.org/jwcross/duckweed/phytochrome.htm

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  2. Phytochrome is used to regulate the time of the flowering based on the length of the day or night. It also sets circadian rhythms, regulates responses of the germination of the seeds, elongation of seedlings, the synthesis of the chlorophyll, etc.

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