Japanese-American Experts Discover Genes That Affect Plant Perception of Carbon Dioxide

Scientists in Japan and the United States have discovered that a gene called "HT1" plays an important role in plants' perception of carbon dioxide in the surrounding environment. This result is expected to provide clues for studying the effect of elevated carbon dioxide concentration on plants. According to "Asahi Shimbun" reported on the 6th, when the concentration of carbon dioxide in the surrounding environment decreases, the plant will open the stomata on the leaves to absorb more carbon dioxide, and when the concentration of carbon dioxide increases, the stomata of the leaf will close. Scientists from Japan's Kyushu University and the University of California, San Diego have discovered in Arabidopsis mutants that Arabidopsis with a genetic mutation cannot switch leaf stomata accordingly when the CO2 concentration changes. Further studies have shown abnormalities in the gene "HT1" in these Arabidopsis cells. Scientists also used gene technology to make the “HT1” gene in normal Arabidopsis plants unable to function. Studies have found that such plants do not respond to changes in carbon dioxide concentration. The researchers therefore believe that the "HT1" gene directs the synthesis of enzymes that play a large role in plant perception of carbon dioxide. The increase in carbon dioxide concentration in the atmosphere is an important factor in global warming, and related research has also received attention. The above research results have been published in the latest issue of the journal Nature Cell Biology. Kyushu University's Professor J. Seyado who participated in the study said that there is still a lot of doubt about the effect of continuous increase in atmospheric carbon dioxide concentration on plant growth. The results of this research will lay the foundation for the future research on plants' absorption of carbon dioxide.

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